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Description : Check out this medical presentation on Emergency Medical Services (EMS), which is titled "Emergency Airway and Ventilation—The Difficult Airway", to know about Emergency Airway and Ventilation.

Tags : Emergency Medical Services, EMS, Emergency Airway, Ventilation

Published on : Aug 10, 2021 | Views : 1910 | Downloads : 11

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Slide 1-

Emergency Airway and Ventilation—The Difficult Airway By: Darryl Jamison NREMT-P
Slide 2-

Hey ya’ll watch this….
Slide 3-

Goals Predict a difficult airway based on clinical criteria Plan for appropriate action in the difficult airway Initiate appropriate plans of attack with confidence in the “Can’t Ventilate/Can't Intubate” (CVCI) situation Become informed about some new (and not so new) airway options out there.
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What this class assumes You already understand the basic anatomy of the Airway You already have a basic understanding of both BLS airway maneuvers and Endotracheal Intubation by Oral and Nasal means You are familiar with needle and traditional surgical airway procedures. You are an experienced operator in the field of EMS.
Slide 5-

Function of the Respiratory System Pulmonary ventilation—movement of air into and out of lungs so that gases in the alveoli are continuously exchanged. External respiration—gas exchange between blood and alveoli Transport of respiratory gases—02 and CO2 between lungs and tissue Internal respiration—gas exchange between systemic blood and tissue cells
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Why do we Intubate? Inability to protect and maintain patent airway. Failure of oxygenation or ventilation. Anticipated need based on clinical course
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Ideal conditions for intubation Ideal Lighting, positioning, etc. Plenty of assistance Time to prepare, plan, discuss Option to Abort Empty Stomach Back up available.
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Ideal Pt. for intubation Intact, clear airway Wide open mouth Pre-Oxygenated Intact respiratory drive Normal dentition/good oral hygiene Clearly identifiable and intact Neck and Face Big open Nostrils Good Neck Mobility Greater than 90 KG, Less than 110 kg.
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Ped and Adult Normal Trachea 0
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In Reality Our patients are: Immobilized Traumatized Compromised Prioritized Beer-n-Pizza-ized
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They Tend to look like This:
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Or this…
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Or this (after failed ETT)
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Most of our Patients are already “difficult airways” by “OR” Standards. Why should EMS personnel try to further identify a difficult airway?
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The American Society of Anesthesiology (AMA)has noted: “… there is strong agreement among consultants that preparatory efforts enhance success and minimize risk.” And “…The literature provides strong evidence that specific strategies facilitate the management of the difficult airway “ Thus Identifying a potentially difficult airway is essential to preparation and developing a strategy.
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What does this mean to us? Well, many Anesthesiologist have the option to “Abort” induction, or to work through a problem with as much assistance as needed. In the REAL WORLD of EMS that is seldom the case for Paramedics. However many of the BASIC principles are valid in the clinical evaluation of Patients, and thus valuable in our education as medics. Knowing these principles will improve our decision making process and Patient Care;.
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How can we further identify a difficult airway? PMHx Basic Physical Exam Thyromental Distance Dr. Binnions “Lemon” Law Mallampati Classification
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Past Medical History Rheumatoid Arthritis Ankylosing Spondylitis: Painful Stiffening of the Joint Cervical Fixation Devices Klippel-Fiel Syndrome: Short wide neck, reduction in number of cervical vertebrae, and possible fusion of vertebrae. Thyroid or major neck surgeries Pierre Robin Syndrome: Small Jaw, cleft Pallet, No Gag reflex, downward displacement of tongue Acromegaly: Thickening of Jaw, Soft tissue structures of the face, associated with middle age
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Past Medical History (Continued) Reduced Jaw Mobility Epiglottitis Tumors, Known Abnormal Structures Previous Problems in surgery
Slide 21-

Basic Physical Exam Anything that would limit movement of the neck Scars that indicate neck surgeries Kyphosis Burns Trauma, especialy instability of the facial and neck structures.
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ThyroMental Distance Measure from upper edge of thyroid cartilage to chin with the head fully extended. A short thyromental distance equates with an anterior larynx that is at a more acute angle and also results in less space for the tongue to be compressed into by the laryngoscope blade. Greater than 7 cm is usually a sign of an easy intubation Less than 6 cm is an indicator of a difficult airway Relatively unreliable test unless combined with other tests.
Slide 23-

Dr. Binnions Lemon Law: An easy way to remember multiple tests… Look externally. Evaluate the 3-3-2 rule. Mallampati. Obstruction? Neck mobility.
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L: Look Externally Obesity or very small. Short Muscular neck Large breasts Prominent Upper Incisors (Buck Teeth) Receding Jaw (Dentures) Burns Facial Trauma S/S of Anaphylaxis Stridor FBAO
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E: Evaluate the 3-3-2 rule Greater than three fingers from Jaw to Neck Jaw is Greater than 3 fingers wide You can open the mouth greater than two fingers
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M: Mellampati classification A Method used by Anesthesiologist, reliable to predict difficult direct Laryngoscopy (Cormack & Lehane grading) A Class I view is a Grade I Intubation 99% of the time A Class IV view is a Grade III or IV intubation 99% of the time
Slide 27-

Mellampati Classification
Slide 28-

Cormack & Lehane Grading
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O: Obstruction? Blood Vomitus Teeth (“chicklets”) Epiglotis Dentures Tumors Impaled Objects
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N: Neck Mobility Spinal Precautions Impaled Objects Lack of access See PMHx for others.
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What do we do when we have a difficult airway?
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So what do we do?
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Before intubation Is there another means of getting our desired results BEFORE we attempt Direct Oral ETT? (Especially if we RSI) CPAP ? PPV with BVM or Demand Valve? Nasal ETT? Do we have all the help we need, all Airway equipment with us? (Suction?)
Slide 34-

Laryngeal Mask Airway
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In Pediatric Advanced Life Support (PALS), the LMA™ airway is classified as a Class Indeterminate device, defined as "Interventions can still be recommended for use, but reviewers must acknowledge that research quantity/quality fall short of supporting a final class decision. Indeterminate is limited to promising interventions." Therefore, the LMA™ airway may be utilized depending on the situation at the time of the arrest.
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What are we going to do if we don’t get the Tube? Plans “A”, “B” and “C” Know this answer before you tube.
Slide 38-

Plan “A”: (ALTERNATE) Different Length of blade Different Type of Blade Different Position
Slide 39-

Plan “B”: (BVM and BLIND INTUBATION Techniques ) Cam you Ventilate with a BVM? (Consider two NPA’s and a OPA, gentile Ventilation) Combi-Tube? PTLA (No Longer produced) EOA, EGTA? LMA an Option? Retrograde Intubation?
Slide 40-

What do we do when faced with a Can’t Intubate Can’t Ventilate situation? Plan “C”: (CRIC) Needle, Surgical,
Slide 41-

Do YOU feel ready to enact Plans A, B, C at a drop of a hat? Feel familiar with all those tools and techniques? As Paramedics we should, After all we will provide the only definitive care in these patients. ACEMS ED will be trying to increase training in these areas.
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