Airway Management reduced Flashcards
ASA Difficult Airway Algorythm
Difficult Airway Management
Pink one
What is the barrier between the upper and lower airway?
Glottis
This is the only muscle that ABDUCTS the vocal ligaments
Posterior cricoarytenoid muscles
What is the most narrow part of the adult and pediatric airways?
Pediatric - cricoid cartilage
Adults - glottis (6 - 9 mm)
Normal mouth opening distance
3 - 4 cm (2-3 FB)
Posterior cricoarytenoid
what do they do
who innervates it
Only abductor of the cords!! Opens the glottis
Recurrent laryngeal nerve
intrinsic muscle
Lateral cricoarytenoid
function
nerve
Adducts the cords
Recurrent laryngeal nerve
intrinsic muscle
Arytenoids
function
nerve
Closes the glottis (esp the posterior)
Recurrent laryngeal nerve
intrinsic muscle
Crycothyroid
function
nerve
Produces tension and elongates the cords
superior laryngeal nerve
Thyroarytenoid & Vocalis
Shortens and relaxes the cords
recurrent laryngeal nerve
Sensory and Motor Function of the Superior Laryngeal Nerve (Internal branch)
Sensory only!!
Base of tongue
Epiglottis
Supraglottic mucosa
2 joints (thyroepiglottic and cricothyroid joints)
Sensory and Motor Function of the Superior Laryngeal Nerve (External branch)
- Sensory:
- Anterior subglottic mucosa
- Motor:
- Cricothyroid muscle (adductor/tensor)
Sensory and Motor Function of the recurrent laryngeal nerve
- Sensory
- Subglottic mucosa
- Muscle spindles
- Motor
- Thyroarytenoid
- Lateral cricothyroid
- Interarytenoid
- Posterior arytenoid
Precautions for nasal airways
Epistaxis and anticoagulants
Nasal and basilar skull fractures
Adenoid hypertrophy