hemodialysis - napa valley college 246 dialysis... · compare / contrast pd / hd 1. principles...
TRANSCRIPT
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HEMODIALYSISNursing 246
Adapted from Lewis Chapter 47Donna Geiger, RN, MSN, FNP
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Dialysis
• Begun when patient’s uremia can no longer be adequately managed conservatively
• What is “uremia”??• What lab test will show “uremia”??• What about the GFR?
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Dialysis
• Certain uremic complications also indicate a need– Encephalopathy– Pericarditis – Fluid Overload States
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Dialysis• very sick patients with sudden loss of
kidney function (acute renal failure) • or stable patients with permanent loss of
kidney function (stage 5 chronic kidney disease).
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HemodialysisEffectiveness and Adaptation
• Cannot fully replace metabolic and hormonal functions of kidneys
• Can ease many of the symptoms • Can prevent certain complications
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March 1960 Patient Clyde Shields, a Boeing Machinist, at the University of Washington
Hospital in Seattle. (He died of a MI after 11 years on dialysis)
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His PhysicianBelding Scribner Inventor of theScribner-Quinton Shunt….
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THE Scribner-Quinton Teflon Shunt 1960
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First Home Hemodialysis Machine
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First HomePeritoneal Dialysis Machine
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!1972! Medicare ESRD Program
• Provided coverage for all patients with ESRD
• Expectation:–1972: 40,000 patients–2007: 450,000
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A. Renal ArteryB. Afferent ArterioleC. GlomerulusD. Efferent ArterioleE. Peritubular CapillaryF. Efferent VenuleG. Renal VeinH. Bowman’s CapsuleI. Proximal TubuleJ. Loop of HenleK. Distal TubuleL. Collecting Tubule
This is what dialysis tries to replace
However, not all kidney functions can be replaced with dialysis
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In Renal Unit for Nursing 246 Content Outline
Compare / Contrast PD / HD1. principles involved2. access3. location of dialyzing membrane4. equipment5. length of time involved6. indications for use7. advantages / disadvantages8. complications9. general nursing care (HD and PD)
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EquipmentHemodialysis
• Dialysis machine• Needles / Tubing to
access site• Dialysate
Typical Hemodialysis Machine
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HemodialysisDialyzers
• Long plastic cartridge that contains thousands of parallel hollow tubes or fibers
• Fibers are the semipermeable membrane
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For Hemodialysis this is the FILTER
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Hemodialysis System
Fig. 47-16
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HemodialysisProcedure
• Two needles placed in fistula or graft
• Needle closer to fistula or red catheter lumen pulls blood from patient and sends to dialyzer
• Blood returned from dialyzer to patient through second needle or blue catheter
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HemodialysisProcedure
• Dialyzer/blood lines primed with saline solution to eliminate air
• Heparin added to blood as it flows to dialyzer• Terminated by flushing dialyzer with saline to
remove all blood• Needles removed and firm pressure applied
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HemodialysisProcedure
• Before treatment nurse should– Complete assessment of fluid status,
condition of access, temperature, skin condition
• During treatment nurse should– Be alert to changes in condition– Perform vital signs every 30 to 60 minutes
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Fig. 47-17
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Length of Time InvolvedHemodialysis
• 3-5 hours TIW• Daily for 1-2 hours
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HemodialysisMain Complications
• ESRD means a weakened immune system – Sepsis
• Graft Malfunction– Clotting / Thrombus
• Less frequent with Fistula– Infected Graft
• Less frequent with Fistula– Rejection of AV Graft
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HemodialysisComplications
• Loss of blood• Hepatitis
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During HemodialysisSerious Problems
• Hypotension• Arrhythmias
– Especially Atrial Fibrillation• Air Embolus• Irregular heart rate
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During HemodialysisCommon Complaints
• Muscle Cramps• Headaches• Nausea and vomiting• Feeling “washed out”
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When Symptoms Appear Together
“Symptom Complex”
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“Symptom Complex”during Hemodialysis
• Sudden N/V• Abdominal cramping• Tachycardia• Dizziness
• Is Probably Because of ________________
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“Symptom Complex”during Hemodialysis
• N/V• Muscle cramping• Dizziness
• Is Probably Because of __________________
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“Symptom Complex”during Hemodialysis
• N/V• Restlessness• HA• Blurred vision• Muscle twitching• Altered LOC• If occurs, happens usually after first dialysis• Is Probably Because of
__________________________________
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Access for Dialysis
Hemodialysis
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HemodialysisVascular Access Sites
• Obtaining vascular access is one of most difficult problems
• Types of access include• Temporary vascular access
–External • Arteriovenous fistulas and grafts
–Internal
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AccessHemodialysis
– External Access• Permcath or
similar– Internal Access
• AV Fistula• AV Graft
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RightInternal JugularPreferred Site
Will beTunneledIf expected toRemain in placeFor > 3 weeks
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PERMCATHUsually inserted by a radiologist
Into the large central veins of the chest or upper armCan provide access for as long as a year
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Catheter Used for Dialysis
Photo courtesy of J. RowlandAn internal jugular catheter, because it is the easiest on the blood vessels
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PermCath• Easily identified from other Central Lines
as have red and blue ports• Red = Access Lumen
– What does access lumen mean? • Blue = Return Site
– What does return site mean?• Always assume the catheter contains
Heparin– (usually 5,000 – 10,000 U / ml and 1-2 ml is used)
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Can an IV be run into a PermCath?
• ONLY with an order from the nephrologist– Permacath is always heparinized when not in
use– Withdraw 5 ml and discard before using if
for emergency IV Access– Any Heparin not aspirated places patient
at risk for bleeding post-dialysis• A minimum IV Requirement
– Keep Open Rate of 30 ml/hr – on an infusion pump
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Internal Vascular Access for Hemodialysis
Fig. 47-13
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Why a Fistula ?
• A Fistula is a connection between two parts of the body that are not normally connected at that point
• AV fistula: an artery and a vein are joined
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Why an Artery and a Vein?
• Veins have lower blood flow, weak walls and collapse
• Arteries have high speed blood flow and strong walls
• The vein then becomes larger and stronger
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Mature Arteriovenous Fistula
--
Photo courtesy of J. Rowland
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An AV fistula may take six weeks or longer to heal, but it can last for many years. An AV fistula is less likelythan other types of access points to form clots or become infected.
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What about AVG?
• Arteriovenous Graft• Synthetic Tube surgically placed to
connect the vein and artery• Location
– Usually upper or lower arm – Or thigh– Or could be in chest
• There is risk of rejection
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Arteriovenous Graft
Photo courtesy of J. Rowland
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An AV graft often heals Within two to three weeks.
With proper care, an AV graft may last several years — but it's more likely toform clots and become
infected than is an AV fistula.
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Nursing Fistula & AV Graft Care
• Routine checks are done during dialysis– Fistulogram or doppler studies can be done
• Avoid BP and other IV access in the affected extremity
• Check blood flow– Look for signs of infection, temperature or
color changes– Listen for “bruit” / palpate “thrill”
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What are the “Bruit” and “Thrill”
• the physical signs of blood flow through the access– ie., it is not clotted
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Care of AV Grafts & FistulasPatient Instructions
• Keep the access area clean. • Don't lift heavy objects or put pressure on
the arm with the access point. • Don't cover the access point with tight
clothing or jewelry. • Check for the thrill at the access site every
day• Don't sleep with the access arm under
your head or body.
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“Cannulating” a Fistula
• The formal description of the process of inserting needles into a vascular access
Graphic courtesy of Medisystems HemoDYNAMIC Devices™
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Vital Signs are checked before and throughout
Mostly time to relax
Watch TV
Read
Pay Bills?????
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Question OneA vascular access is:
a) A birth defect that can cause kidney failure
b) An unusual pattern of blood vessels on the skin
c) A passageway to the blood created for hemodialysis
d) A hole in the blood vessel
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Question 2Vascular access is called the dialysis lifeline
because:
a) You use it to lower yourself into the dialysis chair
b) You use it to get dialysis and have only a few possible sites
c) You get all your food and medications through it
d) You need it to go swimming when you are on dialysis
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Question 3Why is a fistula the best type of access?
a) It can last longest and is least likely to get infected or clotted
b) It looks the best and allows you to wear short sleeves
c) It can be used for dialysis the same day it is created
d) It can be easily moved from one arm to the other
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Question 4
The biggest problem with a graft for dialysis is:
a) A graft can fall out if it becomes infected
b) A graft is hard to put dialysis needles into
c) A graft gets bigger and bigger over time
d) A graft is prone to infection and clotting
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Question 5A catheter is the last choice for permanent
access, because:
a) It dissolves in water, and is very inconvenient
b) It has poor blood flow, and is easily infected and clotted
c) It must be placed under special conditions that are hard to find
d) It can only be used by specially-trained dialysis staff
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Question 6Which type of dialysis catheter is
recommended for kidney patients?
a) A femoral catheter, because it is the most convenient
b) A subclavian catheter, because it is the easiest to use
c) An internal jugular catheter, because it is the easiest on the blood vessels
d) An external jugular catheter, because it is the most comfortable
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Question 7Which of the following are signs of possible
access infection?a) Warmth, redness, tenderness, swelling
b) Sneezing, sniffling, coughing, sore throat
c) Cramps, nausea, vomiting, diarrhea
d) Headaches, blurred vision, shortness of breath
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Question 8You can check your bruit each day by
monitoring its ________________:a) Color
b) Smell
c) Sound
d) Feel
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Question 9You can check your thrill each day by
monitoring its ________________:a) Color
b) Smell
c) Sound
d) Feel
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Question 10Why should you never compress a fistula or
graft with a tight watch or bracelet, or by sleeping on your access arm?
a) Because the chaffing can increase the risk of an infection
b) Because the buzzing will damage your jewelry and keep you awake
c) Because your sleep will be disturbed, which can hurt your access
d) Because squeezing the access slows blood flow and makes clots more likely
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Fact
• Fistula First initiated in early 2003• At that time use of AVFs were:
– 80% of prevalent hemodialysis patients in Europe
– 30% of prevalent hemodialysis patients in the United States
Fistula First, National Vascular Access Improvement Initiative. Available at: www.fistulafirst.org/professionals/tools.php. Accessed January 11, 2007.
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Benefits of Arteriovenous Fistula (AVF)
• Benefits of Arteriovenous Fistula (AVF)– Lowest rate of failures and complications– Longevity– Lowest costs
Merrill D, et al. Dial Transplant. 2005;34:200-208.
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Complications
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Stenosis
• Most common complication• Causes:
– IV, CVC, PICC lines– Surgery to create AVF– Aneurysms
• May be caused by the back pressure associated with stenosis
– Needle-stick injury
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Distended, Obstructed Left Shoulder Veins Indicative of Central-vein Stenosis
Photo courtesy of J. Holland
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Bleeding
• Bleeding during treatment (oozing around needle or infiltration)
• Bleeding post–needle removal• Improper pressure with needle withdrawal
= vessel damage
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Post-Cannulation Bruising and Hematoma
Reprinted with permission of L. Ball and the American Nephrology Nurses' Association publisher, Nephrol Nurs J. 2006;33:302.
•the surface skin site has sealed but the needle hole in the vessel wall has not
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Infiltration = Hematoma
Photo courtesy of D. Brouwer
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Aneurysm
Photo courtesy of P. Cade
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Thrombosis
• Surgical/technical problems• Preexisting anatomic lesions
– eg, old IV injury• Premature use• Poor blood flow• Hypotension• Hypercoagulation• Fistula compression
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Infection
• AV fistulas have lowest risk of infection of any vascular access type.
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“Claw Hand” Contracture From Steal Syndrome
Photo courtesy of J. Holland