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    THE PERIOPERATIVE PATIENT

    1. Basic Patient Needs

    Following Maslows Hierarchy of Needs, the basic needs should be

    met first before satisfaction of the higher level of needs can be

    met. But priorities may be changed according to the situation:

    Preoperatively: anxiety and nutrition status are addressed

    Intraoperatively: the team concentrates on the patients

    physiologic needs for oxygen, circulation, and the prevention of

    shock and infection.

    Postoperatively: Team members must prevent complications and

    encourage patients self actualization.

    2. Patient Reaction to Illness and Surgery

    All patients have some type of emotional reaction

    before any surgical procedure, be it obvious or hidden, normal or

    abnormal. For example, preoperative anxiety may be an

    anticipatory response to an experience the patient views as a

    threat to his or her customary role in life, body integrity, or lifeitself. Psychological distress directly influences body functioning.

    Therefore, it is imperative to identify any anxiety the patient is

    experiencing.

    Undoubtedly, a patient about to undergo surgery is

    faced with various fears, including fears of the unknown, of death,

    of anesthesia, pain, or cancer. Concerns about loss of work time,

    loss of job, increased responsibilities or burden on family

    members, and the threat of permanent incapacity further

    contribute to the emotional strain created by the prospect of

    surgery. Less obvious concerns may occur because of previous

    experiences with the health care system and the people patient

    has known with the same condition.

    Patient express fear in different ways. For example,

    one patient may repeatedly ask a lot of questions even thoughanswers were given previously. Another person may withdraw,

    deliberately avoiding communication, perhaps by reading or

    watching television. Still, other may talk about trivialities.

    Consequently, the nurse must be empathetic, listen well, and

    provide information that helps alleviate concerns.

    3. Family and Significant Others

    During surgery, the significant others usually wait in a

    designated lounge. If they must leave the facility for any reason

    ask them for a phone number where they can be reached. Provide

    the phone number of the clients unit.

    When discussing surgery with significant others, be

    aware of information previously given by the surgeon regardingthe immediate surgical outcome and eventual prognosis. You can

    then answer questions confident the information you give agrees

    with previous statements.

    Prepare significant others for nasogastric tubes, chest

    tubes, suction equipment, respiratory equipment, intravenous

    infusions, dressings, or monitoring equipment the client may

    require. Inform the significant others when the procedure is

    completed. Make certain surgeon knows who is waiting for

    information on the client.

    Reassure significant others that the length of time the

    client is gone may not reflect the actual length of surgery. There

    are often unpredictable delays that might cause the client to wait

    before surgery. Reassure the family if this has happened to the

    client so they will not worry.

    4. Patients with Special Needs

    4.4 Patients with Diabetes Mellitus

    Diabetes Mellitus is an endocrine disorder that affects

    glucose metabolism and the production of insulin in the beta cells

    o f the pancreas.

    3 types:

    1. Type 1. Insulin Dependent Diabetes Mellitus (IDDM)-the pancreas produces little or no insulin thus regular

    administration of insulin injection is required.

    2. Type 2. Non Insulin Dependent Diabetes Mellitus(NIDDM) pancreas produces varying amounts of

    insulin. Onset may be at any age but usually 40 y.o. at

    obese persons. Blood glucose levels are controlled by

    diet and the administration of antihyperlipidemics.3. Type 3. Diabetes Mellitus associated with other

    conditions or syndromes Impaired glucose tolerance

    may be secondary to pancreatic or hormonal dse, drug

    or chemical toxicity, abnormal insulin receptors, or

    other genetic syndromes.

    Special Considerations:

    1. Scheduling Elective Surgical ProcedureAssessment of DM patients can minimize the potential risks:

    a. Capillary Blood obtained by fingerstick for fasting serumglucose

    b. Preop Insulin dose may be reduced or eliminated preventhypoglycemia and insulin shock.

    c. Continuous IV Access in case of metabolic problem.i. Patients who are insulin dependent are determined bu

    the severity of the disease, preop control regimen and type

    of surgical procedures, insulin infusion or administered

    depending on the serum glucose levels.

    ii. Adequate hydration; electrolytes to maintainmetabolic status

    iii. Monitor fluid intake and output to maintain hydrationwithout fluid overload.

    d. Monitoring of blood glucose levels during long surgicalprocedures for hyperglycemia and hypoglycemia and

    fractional urine specimens for ketones.

    e. Nasogastric suctionf. Anti-embolic stockings are worn during the surgical

    procedure or pre-op to prevent thrombophlebitis and

    thromboembolism.

    g. Guarded skin integrity to prevent sepsisi. Strict aseptic and sterile technique

    ii. Foam padding and gel mattress in bony prominencesfor procedure will take 2 or more hrs to prevent pressure

    sores

    iii. Hyposensitive tape to affix dressings.

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    4.5 Obese Patients

    2 origins:

    1. Endocrine Origin. Usually associated with biliary,hepatic and endocrine disorder

    2. Non Endocrine Origin. Associated with excessivecaloric intake

    Physiologic Dysfunctions:

    Special Considerations:

    GOAL: Safety precautions against injury, falls and burns.

    1. Transporting and lifting the patienta. Stretchers or Operating Beds

    - In moving the ppatient from the stretcher topoperating bed, wheels should be locked.

    - Safety belts should be long enough to providesecure limitation of unwanted mobility.

    2. Keeping exposure to minimum3. Induction, intubation and maintenance of anesthesia

    -

    Venous cutdown if peripheral veins are hard toaccess

    - Mobility of the cervical spine to hyperextend theneck for intubation may be limited.

    - Inefficient respiratory muscles, poor lung or chestwall compliance. intraabdominal muscles in the

    supine position.

    - Inefficient ventilation4. Positioning in the operating bed5. Increased operating time because of mechanics of the

    surgical procedure.

    4.6 Patient with Chronic Cardiopulmonary Illness

    The goal in preparing patient for surgery is to ensure a

    well- functioning cardiovascular system to meet the oxygen, fluid,

    and nutritional needs of the preoperative period. If the patienthas uncontrolled hypertension, surgery may be postponed until

    the blood pressure is under control.

    Because cardiovascular disease increases the risk for

    complications, patients with these conditions require greater-

    than-usual diligence during all phases of nursing management and

    care. Depending on the severity of the symptoms, surgery may be

    deferred until medical treatment can be instituted to improve the

    patients condition. At times, surgical treatment can be modified

    to meet the cardiac tolerance of the patient. For example, in a

    patient with obstruction of the descending colon and coronary

    artery disease, a temporary simple colostomy may be performed

    rather than a more extensive colon resection that would require a

    prolonged period of anesthesia.

    4.7 Pregnant Surgical Patients

    Non-obstetric disease requiring surgery may

    complicate pregnancy and jeopardize maternal and fetal well-

    being. Surgery may be safely done if the physician is aware of

    anatomic and physiologic alterations during gestation that

    necessitate an altered approach to diagnosis and management.

    Fetal exposure to all diagnostic and therapeutic agents should be

    minimized, particularly during organogenesis. However, the risk to

    the fetus of diagnostic irradiation is justifiable when information

    essential to maternal health is likely to be obtained. Furthermore,

    the broad range of available antibiotic, analgesic, and anesthetic

    agents provide the physician with options for treatment that have

    an acceptable degree of risk to fetal health. Anesthesia and

    surgery are tolerated considerably better by the fetus than is

    maternal hypotension, hypoxia, or sepsis. When an operative

    procedure is urgently or emergently indicated, pregnancy should

    not delay timely intervention.

    4.8 Immuno-compromised Patients

    Immuno-compromised clients are those highly

    susceptible to infection, are often infected by their own

    microorganisms, by microorganisms on the inadequately cleansed

    hands of health care personnel, and by non-sterile items (food,

    water, air and client-care equipment). Clients who are severely

    compromised include those who

    Have diseases, such as leukemia, that depress theclients resistance to infectious organisms.

    Have extensive skin impairments, such as severedermatitis or major burns, which cannot be

    effectively covered with dressings.

    4.9 Patients with Severe Traumatic Disabilities

    Perioperative management of the head-injured patient

    focuses on aggressive stabilization of the patient and avoidance of

    systemic and intracranial insults that cause secondary neuronal

    injury. Secondary brain injury complicates the course of the

    majority of head-injured patients, adversely influencing outcome.

    The need to improve care of these patients in the field and ED has

    been recognized with the development of guidelines,

    improvement of emergency response services, and better training

    of providers. The goals of emergency therapy in the field and ED

    are to prevent and treat all secondary insults and, ultimately, to

    improve outcome in patients with TBI.

    THE SURGICAL ENVIRONMENT

    1. Special Procedure Rooms

    Operating room management is the science of how to

    run an Operating Room Suite. Operational operating room

    management focuses on maximizing

    operational efficiency at the facility, i.e. to maximize the

    number of surgical cases that can be done on a given day

    while minimizing the required resources and related costs.

    The act of coordinating and running all parts of a

    surgical suite to accomplish a defined set of goals. An

    emerging field, operating room management is increasingly

    studied as how to best:

    1) Ensure patient safety and optimal patient outcome

    2) Provide surgeons with appropriate access to the OR

    so that patients can have operations in a timely

    manner

    3) Maximize the efficiency ofoperating room

    utilization, staff, and materials

    4) Decrease patient delays, and

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    5) Enhance satisfaction among patients, staff, and

    physicians.

    This management science as applied to the surgical

    suite is gaining more attention because of increasing market

    pressures on hospitals from competitors (e.g., other surgical

    suites including office based surgery) and from payers seeking

    lower prices. The surgical suite is often considered a profitable

    hospital unit. As such, surgical suites also comprise an importantfraction of hospital budget spending. Holding patient

    safety constant, the opportunity to increase financial gain through

    modifying the use of already existing resources is a prime target

    for managerial analysis. Incremental improvements in operating

    room utilization and operating room efficiency can have major

    impacts on hospital staff and finances. Some hospital

    administrators perceive efficiency in the operating room as

    throughput, completing the most surgical cases within budget.

    2. Potential Sources of Injury to the Caregiver and the

    Patient

    3.1 Physical Hazards and Safeguards

    The equipment in areas used for aseptic surgery should

    be easy to clean and portable to simplify sanitization of the area.

    The operating table should be constructed with a durable surface

    material impervious to moisture which can be readily cleaned.

    Plastic or stainless steel is frequently used for this purpose. Other

    useful table design features which assist patient positioning

    include height and tilt adjustments, V-trough configuration and

    restraint strap cleats. A disadvantage of stainless steel

    construction is that it predisposes animals to hypothermia. This

    can be corrected by the routine use of a heating pad placed under

    the surgical patient. Reusable, easy to clean vinyl heating pads

    which recirculate hot water are frequently used for this purpose.

    Inexpensive short-term alternatives include hot water bottles or

    heat lamps. Any heat source should be used with caution to

    prevent patient burns.

    Instrument tables provide the surgeon ready access to

    the surgical instruments and minimize the risk of sterilized

    instrument contamination by contact with non-sterile fields.

    Commercially available instrument tables, such as Mayo stands,

    consist of a stainless steel tray supported by a pedestal base with

    a foot-operated height adjustment device, but any tray

    arrangement may be used for this purpose. The unit should be

    easy to clean and simple to operate. The drapes in an instrument

    pack frequently include impervious table covers which can

    minimize instrument contamination and allow the surgeon to

    reposition the table without breaking aseptic technique during

    the procedure. Surgical buckets on wheels (kick buckets), which

    can be readily positioned with the feet, are another

    recommended piece of equipment. They should be easy to clean

    and lined with a plastic bag which should be changed at the end

    of the procedure.

    Adequate lighting is essential for performing surgical

    procedures. A variety of fixtures can be used to provide sufficient

    light. The commercially available surgical light fixtures may be

    ceiling or wall-mounted or free standing. Surgical lights are often

    positioned above the operative area and should be regularly

    wiped with a moist towel prior to use to minimize potential

    contamination of the sterile field below.

    3.2 Chemical Hazards and Safeguards

    Exposure to various anesthetic drugs, medication or

    sterilizing fluids can cause poisoning and is considered a chemical

    hazard. Skin irritation or dermatosis, or irritation of the eyes,

    nose, and throat can result from a latex allergy, frequent use of

    soap or disinfecting liquid, or airborne aerosols. Wear proper

    protective equipment to minimize exposure, utilize eye wash

    fountains if needed, follow appropriate infection control, makesure your work area is well ventilated and avoid latex in case of

    allergies.

    3.3 Biologic Hazards and Safeguards

    Infectious Waste. A waste that is capable of causing

    infectious dses. It contains pathogens with enough virulence

    and quantity that exposure to them could result in an

    infectious dse in a susceptible host.

    Factors that should be considered in deciding if something is

    infectious include the following:

    - The presence of pathogenic organisms insufficient numbers to be capable of causinginfection in living beings. Many microorganisms

    are incapable of causing infection.

    - The presence of a portal of entry into asusceptible host. A cut, needle, stick puncture

    wound, or skin lesion provides portal of entry but

    not living beings are susceptible hosts to

    infectious dses.

    Infectious waste is places in leask proof containers or bags strong

    enough to maintain integrity during transport, and these bags

    should be closed and either labeled or color coded.

    Biohazards. OSHA defines occupational Infections as reasonably

    anticipated skin, eye, mucous membrane, or parenteral contact

    with blood, or other potentially infectious materials during the

    course of duty. This contact includes blood, tissues, and organs,and all body fluids.

    - Handwashing is a must after every patient orglove removal

    - Careful Handling and adequate protection frompotentially contaminated equipment.

    - Every health care facility must develop a writtenexposure control plan that includes procedures

    for evaluating an incident and for determining

    when exposure has occurred.

    BloodBorne Disease. A penetrating injury or a splash with fluid

    contaminated with body fluids.

    Surgical Plume. Plume (Surgical Smoke) is generated by the

    thermal destruction of tissue, or bone.

    3.4 Risk Management

    1. Administrationa. Regulations, recommendations, guidelines,

    and laws should be enforced to prevent

    disastrous consequences of occupational

    hazards.

    b. Policies and procedures should be written,reviewed periodically, and updated as

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    the bathroom in the middle of an operation, inform the

    surgeons of the situation and step out (preferably not during a

    crucial part of the surgery). Be sure to scrub back in!

    Prior to handwashing a mask should be worn. It should

    be tied secure ensuring that it covers both the nose and

    mouth. It is important that the mask is neither too loose nor

    too tight and comfortable to wear, as it will be worn

    throughout the procedure. A sterile gown pack should then belaid out ensuring not to touch the gown as it is sterile. A pair of

    sterile gloves of the correct size should also be laid out. When

    opening the packet it is essential not to touch and contaminate

    the gloves.

    The next step is handwashing. A comfortable water

    temperature should be selected with correct flow and avoiding

    splashing. One antiseptic solution should be used throughout

    the procedure. There are several antibacterial skin cleansers.

    The most commonly used are Providone - Iodine 2% and

    Chlorhexidine Gluconate 1.5 %. If sensitivities occur these

    should be reported to the senior nurse and to Occupational

    Health.

    The procedure for handwashing should be practicedreligiously. Hands and nails should be socially clean at the

    beginning of the procedure. Hands should be kept above elbow

    level so that water washes form the fingertips down to the

    elbow throughout the procedure. Open the brush packet and

    use the nail pick to clean under the nails. The pick should be

    discarded after use. The hands and forearms are then wet and

    the sponge side of the brush is used to wash from fingertips to

    just above the elbow for 30 seconds per arm. The brush is used

    to clean the fingernails for 30 seconds each hand. The brush

    should be detached from the sponge and discarded. With the

    remaining solution on the sponge the hands and arms should

    be rinsed ensuring to wash form the fingertips to mid forearm

    for a total of 2 minutes for each hand. Scrub between the

    fingers and scrub the palms with the nails.

    To finish off the hands and arms should be rinsed. Thetaps should be turned off using the elbows and allow the arms

    to drip dry for a short time. Ensure that hands are kept higher

    than the elbows.

    The first scrub of the day should last for 5 minutes and

    all subsequent scrubs should last for 3 minutes.

    Once the hands are washed, use the towel provided

    with the gown pack to dry the hands and forearm. Hold the

    hands above the elbows and dry from the fingertips down.

    When the hands are dry discard the towel. Holding the gown

    from the inside open it up ensuring the gown does not make

    contact with anything. Place the hands through the sleeves of

    the gown but do not push the fingers through the cuffs. Using

    the cuffs pick up one glove ensuring not to touch the glove with

    the skin and put it on. Pull the cuff of the glove over the cuff of

    the gown. Repeat the same procedure for the other hand.

    Finally, ask a colleague to assist you in fastening the

    gown at the back. Keep hands up at all times and do not touch

    anything that is not sterile.

    If you start to feel ill or faint during an operation,

    immediately inform the surgeons and then step away from the

    table. Do not try to hold out, since it would be a disaster if

    you fainted and fell into the sterile field.

    REMEMBER:

    The use of gloves does not replace hand washing

    Stay a safe distance away from obstacles to preventcontamination of the gown

    In general, just remember: if you are sterile, do not touch

    anything that's not sterile and vice versa.

    Sterile areas are marked by green or blue colored drapes.

    These generally include the operative field (i.e. the patient),

    the scrub table (where are the instruments are kept), and the

    front and sleeves of your gown.

    The back of your gown and anything below the waist is

    considered not sterile or contaminated. Your mask, protective

    eyewear, and hat are also non-sterile.

    Always wash your hands after removing your gloves.

    Change your gloves between clean and dirty procedures -

    even on the same patient

    All disposable garbs must be removed and disposed of

    into the designated garbage basket after leaving the operating

    room. Non-disposable surgical gowns and scrubs must be put

    into the laundry basket, usually next to the entrance.

    1.3 Gowning and gloving

    The purpose of gowning and gloving is to protect the health

    care workers and clients from transmission of potentially

    infective materials.

    TECHNIQUES

    Preparation

    1. Check for:Which activities will be required while you are in the clients room

    to determine which personal protective equipment is

    required.

    Arranging for the care of your other clients, if necessary.

    If special handing is indicated for removal of any specimens or

    other materials from the room.

    Which supplies are present within the clients room and which

    must be brought with you.

    2. Assemble equipment and supplies:Gown; Mask; Eyewear; Clean gloves; Proper Disposable Container

    Donning Procedure

    3. Remove or secure all loose items, such as nametags orjewellery.

    4. Perform hand hygiene.5. Apply cap to head, being sure to tuck hair under the

    cap.

    6. Don Facemask. Locate the top edge of the mask. The

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    mask usually has a narrow metal strip along the edge.

    7. Hold the mask by the top two strings or loops. Placethe upper edge of the mask over the bridge of the

    nose, and tie the upper ties at the back of the head or

    secure the loops around the ears. Secure the lower

    edge of the mask under the chin, and tie the lower ties

    at the nape of the neck.

    8. Don protective eyewear9. Pick up a clean gown, and allow it to unfold in front of

    you without allowing it to touch any area soiled with

    body substances.

    10. Slide the arms and the hands through the sleeves.11. Fasten the ties at the neck to keep the gown in place.

    Have a co-worker hold or tie the waist tie of your

    gown.

    12. Put the hands inside the shoulders of the gown, andwork the arms partway into the sleeves without

    touching the outside of the gown.

    13. Open the sterile glove inside the sterile wrapper whilethe hands are still covered by the sleeves.

    14. With the dominant hand, pick up the opposite glovewith the thumb and index finger, handling it through

    the sleeve.

    15. Lay the glove on the opposite gown cuff, thumb sidedown, with the glove opening pointed toward the

    fingers. Position the dominant hand palm upward

    inside the sleeve.

    16. Use the nondominant hand to grasp the cuff of theglove through the gown cuff, and firmly anchor it. With

    the dominant hand working through its sleeve, grasp

    the upper side of the gloves cuff, and stretch it over

    the cuff of the gown.

    17. Place the fingers of the gloved hand under the cuff ofthe remaining glove. Extend the fingers into the glove

    as you pull the glove up over the cuff.

    Removing Procedure

    18. Remove the first glove by grasping it on its palmarsurface just below the cuff, taking care to touch only

    glove to glove. Pull the first glove completely off byinverting or rolling the glove inside out.

    19. Continue to hold the inverted removed glove by thefingers of the remaining gloved hand. Place the first

    two fingers of the hand inside the cuff of the second

    glove while the hands are covered under the sleeves.

    20. Pull the second glove off to the fingers by turning itinside out. This pulls the first glove inside the second

    glove. Continue to remove the gloves, which are now

    inside-out, and dispose of them in the refuse

    container.

    21. Have a co-worker hold or tie the waist tie of yourgown, remove the gown, making sure not touching the

    contained part. Fold and roll gown down in front into a

    ball, so contaminated area is rolled into the center of

    gown.

    22. Remove the mask, Untie the top strings, and whileholding the ties securely, remove the mask from the

    face orIf side loops are present, lift the side loops up

    and away from the ears and face. Discard disposable

    mask in the waste container.

    23. Remove Cap and Eyewear, Discard disposable cap inthe waste container.

    24. Don Handwashing

    2. Application of Principles of Asepsis and Sterile

    Techniques

    2.1 Infection

    Four major categories of microorganisms cause

    infection in humans: bacteria, viruses, fungi, and parasites.

    Bacteria are by far the most common infection causing

    microorganisms. Viruses consist primarily of nucleic acid and

    therefore must enter the living cells in order to reproduce. Fungi

    include yeasts and molds. Parasites live on other living

    organismas. They include protozoa, such as the one that causes

    malaria, helminths (worms), and arthropods (mites, fleas, ticks).

    Types of Infection

    Colonization is the process by which strains of microorganisms

    become resident flora. In this state, the microorganisms may grow

    and multiply but do not cause disease. Infection occurs when

    newly introduced or resident microorganisms succeed in invading

    a part of the body where the hosts defense mechanisms are

    ineffective and the pathogen cause tissue damage. The infection

    becomes a disease when the signs and symptoms of the infection

    are unique and can be differentiated from other conditions.

    Local Infection limited to a specific part of the bodywhere the microorganisms remain.

    Systemic infection if the microorganisms spread anddamage different parts of the body.

    Bacteremiawhen the culture of the persons bloodreveals microorganisms.

    Septicemia when bacteremia results in systemicinfection.

    Nosocomial Infections are classified as infectionsthat are associated with the delivery of health care

    services in a health care facility (hospital- acquired

    infections).

    2.2 Sources of Contamination

    Endogenous Source if the microorganisms that causenosocomial infections originate from the clients

    themselves.

    Exogenous Source if the microorganisms that causeinfection originate from the hospital environment and

    the hospital personnel.

    Contaminating bacteria are commonly present on thehands of anesthesia providers and found high rates of

    transmission to the surgical field during operations.

    All items used in the wound and on the sterile setup. Dust

    2.3 Environmental Control of Microorganisms

    Aseptic technique is most strictly applied in

    the operating room because of the direct and often extensive

    disruption of skin and underlying tissue. Aseptic technique helps

    to prevent or minimize postoperative infection.

    PREOPERATIVE PRACTICES AND PROCEDURES. The most

    common source of pathogens that cause surgical site infections is

    the patient. While microorganisms normally colonize parts in or

    on the human body without causing disease, infection may result

    when this endogenous flora is introduced to tissues exposed

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    during surgical procedures. In order to reduce this risk, the patient

    is prepared or prepped by shaving hair from the surgical site;

    cleansing with a disinfectant containing such chemicals as iodine,

    alcohol, or chlorhexidine gluconate; and applying sterile drapes

    around the surgical site.

    In all clinical settings, handwashing is an important

    step in asepsis. The "2002 Standards, Recommended Practices,and Guidelines" of the Association of Perioperative Registered

    Nurses (AORN) states that proper handwashing can be "the single

    most important measure to reduce the spread of

    microorganisms." In general settings, hands are to be washed

    when visibly soiled, before and after contact with the patient,

    after contact with other potential sources of microorganisms,

    before invasive procedures, and after removal of gloves. Proper

    handwashing for most clinical settings involves removal of

    jewelry, avoidance of clothing contact with the sink, and a

    minimum of 1015 seconds of hand scrubbing with soap, warm

    water, and vigorous friction.

    A surgical scrub is performed by members of

    the surgical team who will come into contact with the sterile field

    or sterile instruments and equipment. This procedure requires use

    of a long-acting, powerful, antimicrobial soap on the hands and

    forearms for a longer period of time than used for typical

    handwashing. Institutional policy usually designates an acceptable

    minimum length of time required; the CDC recommends at least

    two to five minutes of scrubbing. Thorough drying is essential, as

    moist surfaces invite the presence of pathogens. Contact with the

    faucet or other potential contaminants should be avoided. The

    faucet can be turned off with a dry paper towel, or, in many cases,

    through use of a foot pedal. An important principle of aseptic

    technique is that fluid (a potential mode of pathogen

    transmission) flows in the direction of gravity. With this in mind,

    hands are held below elbows during the surgical scrub and above

    elbows following the surgical scrub. Despite this careful scrub,

    bare hands are always considered potential sources of infection.

    Sterile surgical clothing or protective devices such asgloves, face masks, goggles, and transparent eye/face shields

    serve as barriers against microorganisms and are donned to

    maintain asepsis in the operating room. This practice includes

    covering facial hair, tucking hair out of sight, and removing

    jewelry or other dangling objects that may harbor unwanted

    organisms. This garb must be put on with deliberate care to avoid

    touching external, sterile surfaces with nonsterile objects

    including the skin. This ensures that potentially contaminated

    items such as hands and clothing remain behind protective

    barriers, thus prohibiting inadvertent entry of microorganisms

    into sterile areas. Personnel assist the surgeon to don gloves and

    garb and arrange equipment to minimize the risk of

    contamination.

    Donning sterile gloves requires specific technique sothat the outer glove is not touched by the hand. A large cuff

    exposing the inner glove is created so that the glove may be

    grasped during donning. It is essential to avoid touching

    nonsterile items once sterile gloves are applied; the hands may be

    kept interlaced to avoid inadvertent contamination. Any break in

    the glove or touching the glove to a nonsterile surface requires

    immediate removal and application of new gloves.

    Asepsis in the operating room or for other invasive

    procedures is also maintained by creating sterile surgical fields

    with drapes. Sterile drapes are sterilized linens placed on the

    patient or around the field to delineate sterile areas. Drapes or

    wrapped kits of equipment are opened in such a way that the

    contents do not touch non-sterile items or surfaces. Aspects of

    this method include opening the furthest areas of a package first,

    avoiding leaning over the contents, and preventing opened flaps

    from falling back onto contents.

    Equipment and supplies also need careful attention.

    Medical equipment such as surgical instruments can be sterilized

    by chemical treatment, radiation, gas, or heat. Personnel can take

    steps to ensure sterility by assessing that sterile packages are dry

    and intact and checking sterility indicators such as dates or

    colored tape that changes color when sterile.

    INTRAOPERATIVE PRACTICES AND PROCEDURES. In the operating

    room, staff have assignments so that those who have undergone

    surgical scrub and donning of sterile garb are positioned closer to

    the patient. Only scrubbed personnel are allowed into the sterile

    field. Arms of scrubbed staff are to remain within the field at all

    times, and reaching below the level of the patient or turning away

    from the sterile field are considered breaches in asepsis.

    Other "unscrubbed" staff members are assigned to the

    perimeter and remain on hand to obtain supplies, acquire

    assistance, and facilitate communication with outside personnel.

    Unscrubbed personnel may relay equipment to scrubbed

    personnel only in a way that preserves the sterile field. For

    example, an unscrubbed nurse may open a package of forceps in

    a sterile fashion so that he or she never touches the sterilized

    inside portion, the scrubbed staff, or the sterile field. The

    uncontaminated item may either be picked up by a scrubbed staff

    member or carefully placed on to the sterile field.

    The environment contains potential hazards that may

    spread pathogens through movement, touch, or proximity.

    Interventions such as restricting traffic in the operating room,

    maintaining positive-pressure airflow (to prevent air fromcontaminated areas from entering the operating room), or using

    low-particle generating garb help to minimize environmental

    hazards.

    Other principles that are applied to maintain asepsis in the

    operating room include:

    All items in a sterile field must be sterile. Sterile packages or fields are opened or created as

    close as possible to time of actual use.

    Moist areas are not considered sterile. Contaminated items must be removed immediately

    from the sterile field.

    Only areas that can be seen by the clinician areconsidered sterile (i.e., the back of the clinician is not

    sterile).

    Gowns are considered sterile only in the front, fromchest to waist and from the hands to slightly above the

    elbow.

    Tables are considered sterile only at or above the levelof the table.

    Nonsterile items should not cross above a sterile field.

    http://www.surgeryencyclopedia.com/St-Wr/Surgical-Team.htmlhttp://www.surgeryencyclopedia.com/St-Wr/Surgical-Instruments.htmlhttp://www.surgeryencyclopedia.com/St-Wr/Surgical-Instruments.htmlhttp://www.surgeryencyclopedia.com/St-Wr/Surgical-Team.html
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    There should be no talking, laughing, coughing, orsneezing across a sterile field.

    Personnel with colds should avoid working while ill orapply a double mask.

    Edges of sterile areas or fields (generally the outerinch) are not considered sterile.

    When in doubt about sterility, discard the potentiallycontaminated item and begin again.

    A safe space or margin of safety is maintained betweensterile and nonsterile objects and areas.

    When pouring fluids, only the lip and inner cap of thepouring container is considered sterile; the pouring

    container should not touch the receiving container,

    and splashing should be avoided.

    Tears in barriers and expired sterilization dates areconsidered breaks in sterility.

    2.4 Universal Precautions

    Universal precautions refers to the practice, in medicine, of

    avoiding contact with patients' bodily fluids, by means of the

    wearing of nonporous articles such as medical gloves, goggles,and face shields. The practice was introduced in 198588. In 1987,

    the practice of universal precautions was adjusted by a set of

    rules known as body substance isolation. In 1996, both practices

    were replaced by the latest approach known as standard

    precautions (health care). Nowadays and in isolation, practice of

    universal precautions has historical significance.

    Under universal precautions all patients were

    considered to be possible carriers of blood-borne pathogens. The

    guideline recommended wearing gloves when collecting or

    handling blood and body fluids contaminated with blood, wearing

    face shields when there was danger of blood splashing on mucous

    membranes and disposing of all needles and sharp objects in

    puncture-resistant containers.

    Universal precautions were designed for doctors, nurses, patients,

    and health care support workers who were required to come into

    contact with patients or bodily fluids. This included staff and

    others who might not come into direct contact with patients.

    Pathogens fall into two broad categories, bloodborne

    (carried in the body fluids) and airborne.

    Universal precautions were typically practiced in any

    environment where workers were exposed to bodily fluids, such

    as:

    Blood Semen Vaginal secretions Synovial fluid Amniotic fluid Cerebrospinal fluid Pleural fluid Peritoneal fluid Pericardial fluidBodily fluids that did not require such precautions included:

    Feces Nasal secretions Urine Vomitus Perspiration Sputum Saliva

    Universal precautions were the infection control techniques

    that were recommended following the AIDS outbreak in the

    1980s. Every patient was treated as if infected and therefore

    precautions were taken to minimize risk.

    Essentially, universal precautions were good hygiene habits,

    such as hand washing and the use of gloves and other barriers,

    correct handling of hypodermic needles and scalpels, and aseptic

    techniques.

    2.5 Sterile Technique and Their Applications

    Principles of Sterility

    Principle Number 1: Only sterile items are used within the sterile

    field.

    Drapes, basins, sponges are obtained from a stock room with

    sterile packages. The instruments used are sterilized and are

    placed in a sterile table. Any person who holds the sterile

    equipments should be very cautious to maintain sterility. One

    important consideration in implementing sterility is this: IF YOU

    ARE IN DOUBT ABOUT THE STERILITY OF A CERTAIN OBJECT,

    CONSIDER IT UNSTERILE. Any suspected or known unsterile items

    should not be placed the sterile field.

    Any sterile package found in an unsterile or contaminated area is

    considered unsterile.

    If the actual timing or sterilization procedure is undetermined and

    the nurse is unsure about the sterilization process, the

    equipments sterilized with the suspected procedure are

    considered contaminated.

    A sterile table which has been touch or rubbed accidentally by an

    unsterile person or vice versa is no longer considered sterile.

    If the packaging material is broken or has missing pieces it is no

    longer sterile.

    Microorganisms can enter a packed sterile package when it is

    damp or wet. Thus, damp packages are unsterile.

    A sterile package dropped on a floor is considered contaminated.

    Principle Number 2: Sterile persons are gown and gloved.

    When wearing a gown, the considered sterile area is the part

    where you can see in front down to the level of the sterile field.

    Thus, gowns are only considered sterile in front of the chest,

    sleeves above the elbow to the cuffs down to the level of the

    sterile field. Certain methods should be employed in the OR:

    Gowning is not done on the sterile table to avoid dripping water

    onto the sterile equipments. Gloving and self-gowning should be

    done in a distinct sterile surface.

    http://en.wikipedia.org/wiki/Medicinehttp://en.wikipedia.org/wiki/Medical_gloveshttp://en.wikipedia.org/wiki/Goggleshttp://en.wikipedia.org/wiki/Face_shieldhttp://en.wikipedia.org/wiki/Body_substance_isolationhttp://en.wikipedia.org/wiki/Pathogenshttp://en.wikipedia.org/wiki/Bloodhttp://en.wikipedia.org/wiki/Semenhttp://en.wikipedia.org/wiki/Vaginal_secretionhttp://en.wikipedia.org/wiki/Synovial_fluidhttp://en.wikipedia.org/wiki/Amniotic_fluidhttp://en.wikipedia.org/wiki/Cerebrospinal_fluidhttp://en.wikipedia.org/wiki/Pleural_fluidhttp://en.wikipedia.org/wiki/Peritoneal_fluidhttp://en.wikipedia.org/wiki/Pericardial_fluidhttp://en.wikipedia.org/wiki/Feceshttp://en.wikipedia.org/wiki/Nasal_secretionhttp://en.wikipedia.org/wiki/Urinehttp://en.wikipedia.org/wiki/Vomitushttp://en.wikipedia.org/wiki/Perspirationhttp://en.wikipedia.org/wiki/Sputumhttp://en.wikipedia.org/wiki/Salivahttp://en.wikipedia.org/wiki/Hypodermic_needlehttp://en.wikipedia.org/wiki/Scalpelhttp://en.wikipedia.org/wiki/Scalpelhttp://en.wikipedia.org/wiki/Hypodermic_needlehttp://en.wikipedia.org/wiki/Salivahttp://en.wikipedia.org/wiki/Sputumhttp://en.wikipedia.org/wiki/Perspirationhttp://en.wikipedia.org/wiki/Vomitushttp://en.wikipedia.org/wiki/Urinehttp://en.wikipedia.org/wiki/Nasal_secretionhttp://en.wikipedia.org/wiki/Feceshttp://en.wikipedia.org/wiki/Pericardial_fluidhttp://en.wikipedia.org/wiki/Peritoneal_fluidhttp://en.wikipedia.org/wiki/Pleural_fluidhttp://en.wikipedia.org/wiki/Cerebrospinal_fluidhttp://en.wikipedia.org/wiki/Amniotic_fluidhttp://en.wikipedia.org/wiki/Synovial_fluidhttp://en.wikipedia.org/wiki/Vaginal_secretionhttp://en.wikipedia.org/wiki/Semenhttp://en.wikipedia.org/wiki/Bloodhttp://en.wikipedia.org/wiki/Pathogenshttp://en.wikipedia.org/wiki/Body_substance_isolationhttp://en.wikipedia.org/wiki/Face_shieldhttp://en.wikipedia.org/wiki/Goggleshttp://en.wikipedia.org/wiki/Medical_gloveshttp://en.wikipedia.org/wiki/Medicine
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    Stockinette cuffs of the gowns are absorbent and may retain

    moisture, thus making it a suitable area for bacteria or

    microorganisms to thrive in. because of the said principle,

    stockinette cuffs should be inserted beneath the sterile gloves.

    Principle Number 3: Tables are only sterile at Table Level

    Edges and sides of the table drape are considered contaminated.

    Below the table level is also considered unsterile.

    Any sterile person who touches a part of the drape hanging below

    the table level is considered unsterile. Any object or equipment

    that drops below the table surface is considered contaminated.

    In unfolding and placing a sterile drape any portion of that falls

    below the table surface is unsterile and should not be moved or

    touched or brought back up to the level of the table.

    To prevent cords and tubing from sliding to the edge of the table,

    it should be fastened with a non-sharp device or object.

    Principle Number 4: Sterile Persons Touch ONLY Sterile Items

    while Unsterile OR Personnel Touch Only Unsterile Items

    Sterile OR personnel comes in direct contact with persons who

    wears gowns and gloves only. The items that they will touch are

    the sterile equipments. Any supply brought by an unsterile staff

    should transfer the item in a sterile manner.

    Unsterile OR personnel (circulator), should not directly come in

    contact with a gowned and gloved person.

    Principle Number 5: Unsterile persons avoid reaching over sterile

    field and sterile persons avoid touching or leaning over an

    unsterile area.

    In cases where a solution has to be poured into a sterile basin, the

    unsterile OR personnel should only hold the lip of the bottle over

    the basin to prevent any contact with the sterile area.

    To prevent the circulator from reaching over a sterile area when

    pouring solutions, the scrub person places the basin and glasses

    or any container for solutions near the edge of the table. This

    prevents the circulator from reaching over the sterile area by just

    standing near the edge of the table to fill the container with the

    liquid solution.

    When surgeons perspire on their brows, he or she should to turn

    away from the sterile field and have the sweat removed by the

    circulator.

    In draping or covering an unsterile table the scrub person drops

    the sterile drape at the center of the table while holding the fan-

    folded drape high and standing back from the table to protect the

    sterile gown.

    Sterile gloves are protected by cuffing a drape. The sterile OR

    personnel should place the gloved hands inside the sterile part of

    the drape.

    The scrub person unfolds the drape towards him or herself first to

    allow him or her to move closer to the table when working on the

    opposite side of the table since the first part of the unfolded

    drape now protects the sterile gown.

    Principle Number 6: Edges of anything that encloses sterile

    contents are considered unsterile

    Sterile supplies are packed. In opening sterile packages, the area

    within 1 inch from the edges is considered unsterile. Supplies are

    handled by the circulator. The upper portion of the package is

    flapped away from the self and turns the side under. In doing so,

    the end of the flaps is secured by the band of the circulator to

    prevent it from dangling loosely. The other flap is pulled towardsthe circulator; hence, the contents are exposed yet away from the

    unsterile hands.

    To open a sterile package, the flaps on peel-open packages should

    be pulled not torn. The sterile contents should be flipped and

    lifted upward. The circulator should prevent the sterile contents

    to slide over the unsterile edges.

    When lifting contents from packages, sterile personnel should lift

    the object straight up while holding their elbows high.

    In cases where a sterile wrapper is used as a table cover instead of

    a drape, it should cover the entire table surface. Only the interior

    surface of the wrapper is considered sterile.

    Sterile bottles when opened cannot be recap without

    contaminating the pouring edges. Thus, all contents must be used

    or in cases where there is still a solution left, it should be

    discarded.

    Principle Number 7: Sterile field is set-up just before a surgical

    procedure

    The longer a sterile item is exposed to air and environment, the

    higher the possibility of contamination.

    The practice of covering a sterile set-up does is not in the best

    interest of the patient. Sterility cannot be guaranteed by just

    covering a sterile set-up, unless it is under a constant

    surveillance.

    Covering and uncovering a table may contaminate the sterile

    items.

    Principle Number 8: Sterile areas are continuously kept in view.

    Sterility cannot be guaranteed by just covering a sterile set-up,

    unless it is under a constant surveillance.

    Sterile persons should face the sterile area.

    While waiting for the patient to come inside the OR, someone

    must stay in the sterile area to maintain vigilance on the sterile

    set-up.

    Direct observation ensures sterility.

    Principle Number 9: Sterile persons keep well within sterile area.

    In draping the patient, sterile persons stay at a safe distance from

    the operating table to maintain sterility.

    Movements in a sterile area are done by passing with each other

    back to back at a 360 degree turn.

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    When a sterile person passes by an unsterile person or area, he or

    she should turn back to maintain sterility.

    When sterile persons pass by a sterile field or area, they face

    towards it.

    To prevent contamination during movements in an area, the

    sterile person asks the unsterile personnel to step aside.

    Movement inside the sterile area is kept at a minimum to avoid

    contamination.

    Sterile persons stay inside the sterile field or area.

    Principle Number 10: Sterile persons keep in contact with sterile

    areas to minimum.

    Inside the operating room or within a sterile field the following

    are strictly observed:

    Sterile persons avoid leaning over sterile tables or drapes.

    Sterile personnel who lean over or sit on an unsterile area is

    considered contaminated.

    Principle Number 11: Unsterile persons avoid sterile areas

    Unsterile personnel should have the knowledge on the proximity

    to the sterile field. They must be aware of their distance to the

    sterile area or field to prevent contamination. A distance of at

    least 1 foot or 30 cm from a sterile field should be maintained and

    observed by the unsterile staff.

    Unlike the sterile persons who turn their back towards the

    unsterile surface, unsterile personnel (circulator) face the sterile

    area (within 1 foot) when passing by to observe and maintain the

    distance and to avoid touching any sterile objects.

    All activity of a circulator should be kept to a minimum.

    Principle Number 12: Destruction of integrity of microbial barriers

    result in contamination

    A sterile packages integrity is destroyed by the following

    instances:

    Perforation

    Puncture

    Strike-through soaking of moisture through unsterile or sterile

    layers or vice versa.

    Before opening a sterile package to be used in a certain procedure

    or operation the package should be checked thoroughly beforeopening. The following principles should also be employed in

    handling packages:

    To prevent strike-through all sterile packages should be placed on

    a dry surface.

    If any part of the package becomes damp or wet it is considered

    unsterile and should be discarded or re-sterilized.

    Tables used for operation should be dried before draped.

    If the sterile drape is soaked with a solution the wet area should

    be covered with an impermeable sterile towels or drape.

    Sterile items should be placed not only in clean but also in dry

    areas.

    In handling sterile packages, the hands should be dried first.

    Air can also cause contamination. Thus, undue pressure on sterile

    packs should be avoided. This prevents the ejection of sterile air

    and the entry of unsterile air into the pack.

    Principle Number 13: Microorganisms must be kept to irreducible

    minimum

    Sterilization is the process of removing ALL microorganisms

    including the bacterial spores. However, not all things or area can

    be sterilized. The following principles are employed to employ

    sterile technique in:

    Skin

    Skin cannot be sterilized thus, it can be very good source of

    contamination in any operation. To prevent entrance ofmicroorganism to the patients wound the following are done:

    Surgical hand washing; Chemical antisepsis of the skin around the

    surgical site; Gowning and gloving; Application of sterile draping.

    Air

    Air contains dust, droplets and shedding that may cause

    contamination. Environmental control measures include:

    Movement around the sterile field is kept to a minimum.; Drapes

    are not flipped and fanned to avoid the spread of dusts.; Talking

    inside the operating room is kept to a minimum because moisture

    droplets are expelled with force into the mask when a person is

    talking.

    2.6 Methods of Sterilization of Instruments

    Sterilization destroys all microorganisms, including bacterial

    endospores.

    To be effective, sterilization requires time, contact, temperature

    and, with steam sterilization, high pressure. The effectiveness of

    any method of sterilization is also dependent upon four other

    factors:

    1. The type of microorganism present. Some microorganisms are

    very difficult to kill. Others die easily.

    Note: Although rinsing an item with alcohol and then igniting it

    with a match (flaming) sometimes is suggested as a method of

    sterilization, it is not effective!

    2. The number of microorganisms present. It is much easier to kill

    one organism than many.

    3. The amount and type of organic material that protects the

    microorganisms. Blood or tissue remaining on poorly cleaned

    instruments acts as a shield to microorganisms during the

    sterilization process.

    4. The number of cracks and crevices on an instrument that might

    harbor microorganisms. Microorganisms collect in, and are

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    protected by, scratches, cracks and crevices such as the serrated

    jaws of tissue forceps. Finally, without thorough cleaning, which

    removes any organic matter remaining on the instruments that

    could protect microorganisms during the

    2.7 Sterilization Process

    Heat Sterilization for Prion Diseases

    STERILIZATION BY STEAMGeneral Principles Steam is an effective sterilant for two reasons.

    First, saturated steam is an extremely effective carrier of

    thermal energy. It is many times more effective in conveying this

    type of energy to the item than is hot (dry) air. In a kitchen,

    potatoes can be cooked in a few minutes in a steam pressure

    cooker while cooking may take an hour or more in a hot-air oven,

    even though the oven is operated at a much higher temperature.

    Steam, especially under pressure, carries thermal energy to the

    potatoes very quickly, while hot air does so very slowly. Second,

    steam is an effective sterilant because any resistant, protective

    outer layer of the microorganisms can be softened by the steam,

    allowing coagulation (similar to cooking an egg white) of the

    sensitive inner portions of the microorganism. Certain types of

    contaminants, however, especially greasy or oily materials, can

    protect microorganisms against the effects of steam, thushindering the process of sterilization. This reemphasizes the need

    for thorough cleaning of objects before sterilization.

    CHEMICAL STERILIZATION

    An alternative to high-pressure steam or dry-heat sterilization is

    chemical sterilization (often called cold sterilization). If objects

    need to be sterilized, but using high-pressure steam or dry-heat

    sterilization would damage them or equipment is not available (or

    operational), they can be chemically sterilized.

    OTHER STERILIZATION METHODS

    Gas Sterilization The use of formaldehyde gas for killing

    microorganisms was practiced before the turn of the century. One

    of the first uses of formaldehyde gas was to fumigate rooms, a

    practice long since shown to be ineffective and unnecessary

    (Schmidt 1899). There are, however, automatic, low temperaturesteam formaldehyde sterilizers that are effective and can be used

    to process heat-sensitive instruments and plastic items. As

    mentioned previously, because formaldehyde vapors are irritating

    to the skin, eyes and respiratory tract, the use of formaldehyde in

    this form should be limited.

    Other Chemicals:

    Paracetic acid (peroxyacetic acid). The acid is rapidly effective

    against all microorganisms, organic matter does not diminish its

    activity and it decomposes into safe products. When diluted, it is

    very unstable and must be used with a specially designed

    automatic sterilizer (APIC 2002). It is usually used for sterilizing

    different types of endoscopes and other heat-sensitive

    instruments.

    Paraformaldehyde. This solid polymer of formaldehyde may be

    vaporized by dry heat in an enclosed area to sterilize objects

    (Taylor, Barbeito and Gremillion 1969). This technique, called

    self-sterilization (Tulis 1973), may be well suited for sterilizing

    endoscopes and other heat-sensitive instruments.

    Gas plasma sterilization (hydrogen peroxide based). This method

    can sterilize items in less than 1 hour and has no harmful by

    products. It does not penetrate well, however, and cannot be

    used on paper or linen. A specialized sterilizer is required for

    performing gas plasma sterilization (Taurasi 1997).

    3. Surgical Instrumentation

    2.4 Inspecting and Testing of Instruments

    Surgical instruments and devices must be properly

    decontaminated and inspected to ensure their quality, and verify

    their integrity. Damaged instruments may fail during a procedure

    and injure the patient; and inadequately cleaned instrumentscannot be properly sterilized, which increases the risk of infection.

    Central Processing technicians must learn how to properly

    identify, inspect and test surgical instruments for cleanliness and

    function.

    Instrument inspection is a vital process that ensures that the

    many instruments and medical devices that are used every day

    function properly and are thoroughly cleaned so they be sterilized

    effectively.

    Scissor Sharpness - Using scissor test material, make several

    complete cuts through the material, cutting all the way through to

    the distal tip (where scissors most often dull). Red material is used

    for scissors measuring 4.5" to 12" in length, while yellow material

    is used for scissors measuring 3" to 4" in length. The test willindicate satisfactory sharpness. Be sure scissors cut all the way to

    the tip. Scissor test material is available from Spectrum.

    Needle holder Jaw Wear - Visual examinations best. Jaw wear at

    the distal tips will be noticeable, needle holder jaw "tread" always

    wears out and always wears out at the tip.

    Kerrison Rongeur - Sharpness of a rongeur can be tested by using

    a 3" x 5" index card. The rongeur should take a clean bite out of

    the card.

    Bone Cutter - Bone cutting rongeurs should be able to cut through

    a 3" x 5" index card.

    Laparoscopic Scissor - To test the sharpness, cut through a single

    layer of tissue paper. The scissor should cut through cleanly.

    3.5 INSTRUMENT SET ASSEMBLY

    a. Instrument trays should be assembled using a

    detailed photo p rocedure. Ringhandled instruments should be

    placed on a stringer, instrument rack, or other means that allows

    the instruments to remain in an open or unlocked position. This

    will allow the sterilant contact to all surfaces. Instruments with

    multi parts, such as a Balfour retractor or tonsil snare, should be

    disassembled to allow all parts exposure to the sterilant.

    b. Instruments placed on a stringer or rack will require

    placement in such a manner to prevent damage to the

    instruments and easy, orderly access by the operating room scrubnurse. The illustration below shows the proper alignment of string

    instruments. The scissors can be turned in, toward the center of

    the stringer, as long as the tips do not touch another instrument.

    In many cases, the tips of the curved scissors will face away from

    the center of the stringer to prevent damage to the curved tips.

    The shorter instruments are at the end of the stringer, with the

    longer toward the center. This order aids the operating room

    nurse since the instruments at either end of the stringer will be

    used first during the procedure, with progression to the longer

    instruments as the case proceeds.

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    Packaging Chapter. Double peel packs may be preferred by some

    O.R.s for items packaged for use.

    j. If the instrument has sharp points, tip guards can be

    utilized for protection of the instrument. Commercially available

    tip guards or foam sleeves can be purchased for this purpose. Tip

    guards or foam sleeves should be permeable to the sterilant used

    and the manufacturer's instructions followed for use. Latex tubing

    should never be used for this purpose because the sterilant will

    not contact the surface of the instrument.

    3.6 Handling and Cleaning of Powered Instruments

    The first "rule" is to always obtain and follow the

    instrument/device manufacturer's written instructions for

    cleaning, packaging and sterilization. This information should be

    verified each time a new device is received. Without this

    information, device/instrument can be damaged or not properly

    cleaned. Exposure of metals to incompatible solutions can cause a

    chemical and electrochemical attack called corrosion which may

    be irreversible. Liquids, especially chlorides (e.g. bleach) are of

    concern for stainless steel therefore, surgical instruments should

    never be exposed to bleach. If exposure to saline cannot be

    avoided, then the instrument should immediately be rinsed off

    with sterile water.

    Damage to Instruments - The life of an instrument should last

    about twenty years if cared for properly. There are many causes

    of damage which include:

    Misuse- not used as intended by design

    Abuse- (e.g.) dumping instruments, stacking

    Improper cleaning, sterilization

    Exposure to chemicals/detergents (e.g. saline - chlorine bleach,

    blood even water).

    Stainless steel will corrode and when it does, the corrosion usually

    appears as surface blemishes (roughness / rust). This creates

    difficulties for cleaning, disinfection and sterilization. Corrosion

    can also indicate locations where future device failure can occur.

    Stainless steel can corrode by pitting, crevice corrosion and stresscorrosion cracking (SCC) (also known as hydrogen cracking). This is

    usually caused by exposure to blood, chloride or bromide

    containing solutions. The effect is deep "pockets" or pits which

    look like black holes on the surface. When pitting occurs, this

    cannot be repaired, the instrument must be replaced.

    Corrosion is often found in box locks and other joints of

    instruments. Sometimes this appears as red rust. The cause is

    usually blood and/or other soils in the joint and box lock. Any type

    of corrosion interferes with proper cleaning and can inhibit the

    disinfection/sterilization process. Therefore, it is important to

    carefully inspect instruments for corrosion. A major factor in

    corrosion is improper cleaning.

    Water Quality- The quality of water can have great impact on

    instrument life. It is recommended to have your water analyzed.

    This should be done by your detergent manufacturer at no

    charge. Mot water supplies have minerals such as sodium,

    magnesium and iron present. All of these can adversely affect

    cleaning as well as detergent action impacting on the life of

    instrument.

    How to Protect Instruments - Instruments should only be used as

    intended. For example, only use dissecting scissors on tissue only

    use suture scissors to cut suture, never use tubing clamps to

    clamp tubings, never "dump" instruments from tray. Always keep

    instruments as clean as possible while in use. At end of the

    procedure, place the instruments in their specific container. If this

    is a protective container, place the items in the designated

    location to protect instruments from damage in transport.

    Instruments should not be stacked unless they are in a rigid

    container.

    Protect delicate items and items with fine/sharp tips by using tip

    protectors. Before using a tip protector, get the manufacturer'stechnical data verifying the tip protectors will permit penetration

    of the sterilant (steam, ETO, gas plasma, etc.). Always place

    heavier items on the bottom of the set and lighter items on top. It

    is important to separate scopes from instruments to avoid

    damage to scopes.

    The use of specialty containers helps to keep delicate items in

    place before and after use. Purchase of delicate instruments

    should always include a specialty container to avoid unnecessary

    damage.

    Competencies - All individuals handling surgical instruments and

    devices need to be knowledgeable in the care, handling and

    processing of surgical instruments. Surgical instruments are the

    extension of the surgeon's hands therefore; they must befunctional when used in the OR. Scissors should be tested for

    sharpness each time they are processed. Ratchets should be

    checked for tension. Finger forceps should be checked to make

    sure the tips meet (approximate) and that teeth are present if

    indicated.

    Quality Control- All instruments should be inspected using a

    lighted magnifying lamp. The device should be inspected for

    cleanliness, to make sure all components are present that the

    instrument works as intended, that there is no damage to the

    instrument and that the instrument is the one identified for the

    set (correct instrument.)

    Scopes -There are two categories of scopes; rigid and flexible. The

    flexible scopes are mainly used in GI/Endo (e.g. gastroscopes). The

    rigid scopes include arthroscopes, cystoscopes, etc. Thisinstrumentation is very expensive. Cleaning is paramount to the

    safety of the device yet by design many of these devices defy

    cleaning. Therefore compliance with the device manufacturer's

    written instructions is critical.

    All personnel processing endoscopic instrumentation should be

    trained and competencies verified.

    Rigid Scopes are a critical part of the endoscopic surgery

    instrument inventory. They are fragile and expensive. They

    provide light and image to the surgeon therefore, they must

    function as expected. The smaller the diameter of the scope,

    usually the more fragile therefore careful handling is essential to

    avoid damage to the small glass rods that transmit the light.

    Always follow the scope manufacturer's instructions for cleaning.

    Usually it is recommended to brush the distal end with soft bristle

    brush and then wipe the outer surfaces of the scope and

    accessories with gauze or soft cloth moistened with detergent

    solution. However, this may vary with the manufacturer.

    Ultrasonic cleaning is not usually recommended for scopes; the

    vibrations can damage the lens seals and possibly fracture the

    optical fibers.

    All areas of the scope should be inspected for scratches, dents,

    burns, etc. Each time the scope is processed, it should be

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    inspected for image clarity. The image should be crisp, clear.

    However, if the image is cloudy, discolored or hazy, this may be

    caused by improper cleaning, disinfectant residue, cracked or

    broken lens, presence of internal moisture or external damage to

    the shaft. Rigid scopes should be stored in specialty containers to

    prevent damage; there are also protective sleeves to place over

    the shaft to prevent damage as well. Verify with the cope

    manufacturer if these sleeves can remain on during the

    sterilization process.

    Today two companies manufacture rigid scope testers to identify

    issues with rigid scopes before processing. They are very effective

    in identifying scope problems.

    Light Cables - Fiber optic light cables also require special handling.

    They should be cleaned per the manufacturer's instructions using

    only those detergents recommended. When preparing for

    sterilization, the cables should be loosely coiled (no less than 8-

    inches in diameter) to prevent damage to the glass rods.

    Laparoscopic Instrumentation - provides unique challenges for

    processing due to the design. This instrumentation can be

    extremely difficult to clean due to the design (long shaft) and jaw

    assembly. Both areas can trap debris. During surgery, the positivepressure of the insufflated abdomen can cause blood and body

    fluids to flow under insulation and into channels making cleaning

    difficult/impossible. Disassemble (if recommended by the

    manufacturer). The use of enzymatic cleaner Alas soon as possible

    after surgery is recommended. Many endoscopic instrument

    manufacturers recommend the use of an ultrasonic cleaner

    (however, follow the instrument manufacturers

    recommendations for cleaning). Pay special attention to jaws and

    channels.

    For laparoscopic instruments, there are some newer technologies

    to help with cleaning. Several manufacturers offer high pressure

    water jets for lumens as an alternative to manually brushing and

    flushing. It is important to rinse repeatedly to remove all

    detergents and residues from the instruments. There are also

    table-top ultrasonic lumen cleaners which adapt to the lumens ofendoscopic instruments to enhance cleaning.

    Inspection - Insulated instruments require special inspection.

    There is a patient safety issue associated with insulated

    instruments. Repeated use/sterilization can cause the layer of

    insulation covering the shaft to break down. If this occurs, minute

    tears can go unnoticed during cleaning/inspection. During surgery

    the defective insulation could allow 100% of the electrical current

    (700oF) to flow from the defect to the patient's organs, tissue.

    What is even more important to note is that the smaller the crack

    the more dangerous to the patient because more current can

    escape from a small hole because it is more concentrated.

    Furthermore, a majority of the instrument is outside the surgeon's

    visual field and therefore the defect could go unnoticed. The

    patient may suffer peritonitis and even death from septicemia

    (infection of the blood stream; also called blood poisoning).

    Damage to the insulation will occur due to normal wear and tear,

    high voltages, the cleaning and sterilization process (flash

    sterilization increases damage) and contact with sharp

    instruments (e.g. trocars). Therefore, it is imperative that a

    comprehensive system for inspection of insulation be

    implemented. This inspection should occur each time the

    instrument is processed. The inspection can be done by using an

    insulation tester in the processing area (reusable device) or a

    single use tester that is sterile and used in the sterile field prior to

    surgery.

    The insulation can get damaged from dropping the instrument,

    repeated sterilizations and/or placing instruments on top of other

    instruments, or "dumped" into a table; therefore proper care and

    handling of these instruments is essential to patient safety.

    Trocars - If reusable trocars are being used, they must be tested

    for sharpness each time. Identify the maximum number of uses

    that would indicate re-sharpening. Observe for nicks, defects

    which would interfere with passage of the scope.

    Power equipment utilized by surgery includes a wide

    variety utilizing different power sources. Power sources may be

    electrical, either line current or battery, compressed medical

    gasses, such as carbon dioxide, nitrogen, or compressed air.

    Equipment powered by gasses is referred to as pneumatic or air-

    powered instruments. Examples of power equipment are:

    reamers, drills, screwdrivers, and saws used by orthopedic and

    some neurosurgeons. Craniotomes, drills, and perforators are

    used by neurosurgeons. Dermatomes are used by plastic and

    general surgeons to take skin grafts, and sternal saws are used by

    thoracic surgeons to cut the sternum.

    Powered equipment should be cleaned and cared for

    according to the manufacturer's recommendations, but under no

    circumstances should a power instrument be immersed in a

    solution of any kind. They should never be processed through an

    ultrasonic or washer/sterilizer. The attachments used with the

    equipment, however, may be processed in the same manner as

    most stainless steel surgical instruments. These attachments can

    include chucks, chuck keys, burr guards, hudson and trinkle

    adapters, and wrenches. These attachments are all metal and will

    retain a great deal of blood and debris. Close attention should be

    give to ensure the power equipment and attachments are

    thoroughly inspected and cleaned. All attachments must be

    removed from the equipment before processing. Saw blades, drill

    points, and bits should be discarded in the operating room after

    the surgical procedures. These items should not be reusedbecause the sharp cutting edge cannot be guaranteed once they

    have been used.

    Skull perforators should be checked frequently and

    sent for sharpening on a routine basis. Due to their cost and

    complexity, a maintenance schedule should be established.

    Disposable, single use perforators are being produced by several

    vendors but the cost still remains high. Air hoses should be

    inspected prior to cleaning for any damage, then washed with a

    mild detergent and lukewarm water. Never immerse the cord into

    any solution. If the equipment has an electrical cord, the cord may

    be washed with a cloth soaked with mild detergent solution.

    Other components are also cleaned in this manner, and then

    wiped with a disinfectant to assure safe handling prior to

    packaging.

    Newer powered equipment requires no lubrication

    since they are self-lubricating and are enclosed with a sealed

    casing. Older equipment will require some lubrication, and this

    should be done during the testing process. Pneumatic equipment

    should be hooked up to compressed air and tested within the

    required PSI (pounds per square inch), and the pressure never

    exceeded to prevent damage to the equipment. Battery operated

    power equipment may be tested also with a battery pack. If

    compressed air is not provided with a wall gauge and a tank is

    required to be stored in SPD, measures must be taken to secure

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    the tank safely to the wall. A battery pack may also be purchased

    and kept in SPD to test the battery operated equipment. Any

    equipment that does not function correctly should be sent for

    repair. If backup equipment is not available, a loaner piece will be

    required to assure surgery cases are not cancelled. Any time

    equipment malfunctions the operating room should be notified.

    Sterilization by a prevacuum sterilizer is recommended

    most frequently for a large majority of equipment. If gravitydisplacement sterilizers are used, the sterilization time must be

    lengthened. Electrical equipment should be sterilized by ethylene

    oxide to prevent damage to the electrical parts. With the variety

    and complexity of power equipment available, it is recommended

    that detailed cleaning, testing, and assembly procedures be

    provided for the technician's use. Frequent inservices will keep

    the SPD staff abreast of current changes and technology.

    Remember; always follow the manufacturer's recommendations.