Ch. 4: Applied Functional Anatomy of the Airway

Question 1

Nasal Passage

Answer 1

Avoid Kiesselbach’s plexus medially.

Floor angles down 15 degrees. Follow it.

Cocaine is anesthetic and vasoconstricting.

Can open passage by 50%

Do NOT force NT tube at the back of the NP. Can cause tear into a false passage submucosally.

Do not use NT intubation w maxillary fractures.

Question 2

Mouth

Pharynx

Answer 2

Mandible-tongue-hyoid-epiglattis. Jaw thrust pulls

epiglottis anterior.

Opening the mouth allows more effective jaw thrust.

Pharynx is tube from base of skull to esophagus.

Benzos can reduce tone and convert partial obstruction to complete obstruction.

NMB can worsen the view in obese and pregnant.

Glossopharygeal nn can be blocked and numb posterior tongue and epiglottis.

Question 3

Larynx

Trachea

Answer 3

Larynx is heavily innervated and stimulation can double HR and BP.

CTM is about the size of pinkie. 6-8mm

ETT for male 8.5 and women 7.5