rapid sequence induction · 2016-05-10 · ventilation” ron walls, md » manual of emergency...
TRANSCRIPT
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Rapid Sequence Induction
• “Virtual simultaneous administration, after
preoxygenation, of a potent sedative agent
and a rapidly acting neuromuscular
blocking agent to facilitate rapid tracheal
intubation without interposed mechanical
ventilation” Ron Walls, MD
» Manual of Emergency Airway Management
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“To Intubate or not to Intubate?”
6 questions to ask:
• Can the patient maintain an airway?
• Can the patient protect this airway?
• Is the patient appropriately ventilating?
• Is the patient appropriately oxygenating?
• Is the patient’s condition likely to deteriorate?
• Is the scene appropriate: safety, moving the patient
while apneic
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Examples of RSI Indications
• Conditions requiring oxygenation/ventilation control or positive pressure ventilation:
– Traumatic brain injury with ALOC
– Severe thoracic trauma (flail chest, pulmonary contusions with hypoxemia)
– Clinical condition expected to deteriorate
• Unconscious or ALOC with potential for or actual airway compromise or vomiting
• And patient has……
– A clenched jaw
– An active gag reflex
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Complications• Increased intracranial pressure
• Increased intraocular pressure
• Increased intragastric pressure
• Aspiration due to decreased gag reflex
• Malignant hyperthermia
• Dysrhythmias
• Hypoxemia
• Airway trauma
• Failure to intubate / failure to ventilate
• DEATH
• Medication induced or procedural?
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3 Major Assumptions of RSI
1. The patient has a full stomach
2. The Paramedic can secure an airway
Failure = DEATH for the patient
DO NOT take away what you cannot give back!
3. The Paramedic can resuscitate the patient
Equipment & Knowledge readily available
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Key Question
• BVM
– Difficult Airway Protocol
– Crash Airway Protocol
– Failed Airway Protocol
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KISS
• Simplicity - limits complications and death
– Limit number of steps/meds
– Rapid onset
– Hemodynamically stable or minimal impact
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Preparation is the KEY
for an organized,
smooth intubation
Proper Prior Planning Prevents Piss Poor Performance
Remember the 7 P’s!!
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RSI 7 Ps
• Prep
• PreO
• Pretreat
• Paralysis
• Protection/Positioning
• Placement with Proof
• Postintubation Management
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Assess the Risks
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Some Predictors of a Difficult
Airway• C-spine immobilized trauma
patient
• Protruding tongue
• Short, thick neck
• Prominent upper incisors
(“buckteeth”)
• Receding mandible
• High, arched palate
• Beard or facial hair
• Dentures
• Limited jaw opening
• Limited cervical mobility
• Upper airway conditions
• Face, neck, or oral trauma
• Laryngeal trauma
• Airway edema or obstruction
• Morbidly obese
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Additional Predictors:
Medical History• Joint disease
• Acromegaly
• Thyroid or major neck surgeries
• Tumors, known abnormal structures
• Genetic anomalies
• Epiglottitis
• Previous problems in
surgery
• Diabetes
• Pregnancy
• Obesity
• Pain issues
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Prep
Assess potential difficulties
• MOANS• Mask seal
• Obesity/Obstruction
• Age > 55
• No teeth
• Stiff
• LEMON
– Look
– Evaluate 3-3-2
– Mallampati
– Obstruction
– Neck mobility
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So, give me some good news:
The 3-3-2 Rule
• Bottom of Jaw/Chin to Neck > 3 fingers
> 7cm usually a sign of easy intubation
< 6cm is an indicator of a difficult airway
• Jaw/Palate > 3 fingers wide
• Mouth opens > 2 fingers wide
Any single indicator has poor specificity
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Paralysis with Induction
• Ketamine
– Sedation• 50mg/ml
Rocuronium
(Zemuron)
– Paralytic
• 10mg/ml
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Rocuronium (Zemuron)
• Very similar properties to
Vecuronium
• Does not need to be
reconstituted, can be stored at
room temp for 60 days
• Less vagolytic properties
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Rocuronium
• Onset: 30-60 seconds
– Fastest onset of all non-depolarizing NMBs
• Dose: 1 mg/kg IVP– 10mg/ml Vials of 100mg/10ml
• Duration: 20-75 minutes
• Maintenance dose is 1/2 the initial dose
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Protection/Positioning
• Sellick?
• BURP?
– Falling out of favor?
• Tracheal positioning
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“BURP”
• Backward, Upward,
Rightward Pressure:
manipulation of the trachea
• 90% of the time the best
view will be obtained by
pressing over the thyroid
cartilage
Differs from the Sellick Maneuver
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Direct Visualization…
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Placement with Proof
• View cords if possible
• End tidal CO2
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Postintubation Management
• Secure tube
• Monitor VS
• Manage oxygenation
• Sedation, analgesia and paralysis
maintenance
• Rocuronium ½ Dose
• Ketamine ½ Dose
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Always have a back-up plan.
• Plans “A”, “B”, and “C”
• Know the answers before you begin
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Plan “A”: (ALTERNATIVES)
• Different:– Size of blade
– Type of blade• Miller
• Macintosh
• Specialty IE: McGrath
– Position (patient & provider)
• Hockey stick bend in ETT or Directional tip ETT
• Gum Elastic Bougie Endotracheal Tube Introducer
• Remove the stylette as you pass through the cords
• “BURP”
• 2-person technique
• OR Have someone else try
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Plan “B”: BVM and BACKUP AIRWAY
• Can you ventilate with a BVM?
– (Consider two NPA’s and an OPA, + Cricoid pressure w/ gentle
ventilation)
• *****KING – LT********
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King-LT? Is this appropriate?
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What do we do when faced with a “Can’t
Intubate Can’t Ventilate” situation?
• Plan “C”: Last resort…
• (CRIC) Surgical
– Know the skill and equipment !!!
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Failed Airway
Unable to intubate (including
blind devices) and unable to
ventilate with a BVM and
maintain an Sp02 > 90 %.
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Failed Airway• Indication:
Inability to maintain oxygenation / ventilation after previous intubation
attempts
• Precaution:
Anticipation during previous airway procedures will allow for rapid
deployment of rescue airway or Cricothyrotomy
Cardiac Monitor, ETCO2 and Pulse Oximetry are recommended for all airway
attempts
• Technique:
Maintain oxygenation with 100% oxygen via non-rebreather mask
Passive oxygenation via nasal cannula at 15 lpm
Placement of a King LT Airway as a rescue device
If unsuccessful or unable to maintain oxygenation; perform Cricothyrotomy
• Complications and Special Notes:
Receiving facility should be notified and advised that you are managing a
Failed Airway
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Final Thoughts on the
“Failed Airway”
• In all cases of a failed airway, the
Paramedic must continually assess the
adequacy of oxygenation and ventilation
• 7% of all trauma patients will require
intubation
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Lets practice!
Ketamine Roc Maint
MG ML MG ML K / R
220lbs
155lbs
98lbs
365lbs
178lbs
265lbs