ETT/Supraglottic Airways

Question 1

LMA

Answer 1

• less invasive
• quick & easy
• no special equipment
• less coughing
• secretions removed if removed inflated
• less kinking, but may dislodge
• avoid mask ventilation

Question 2

ETT

Answer 2

• protect against aspiration
• “secure” airway
• postitive pressure ventilate at higher peak pressures
• post-op ventilation required
• protects against laryngospasm

Question 3

adult ETT size

Answer 3

7.0-9.0

Question 4

peds ETT size formula

Answer 4

(age/4) + 4

compare ETT to pinky size

Question 5

peds ETT depth formula

Answer 5

ETT size x 3

Question 6

microlaryngoscopy tube (MLT)

Answer 6

• small diameter- 5.0-6.0
• longer ETT
• facilitate view of airway

Question 7

cuffed ETT

Answer 7

1. low volume, high pressure

2. high volume, low pressure

Question 8

Nasal RAE insertion technique

Answer 8

• place ETT in warm saline
• mix actin with 2% lido jelly
• dilate nasal passage with nasal trumpet
• use McGill forceps to guide tube

Question 9

Laryngectomy/tracheal stoma ETT

Answer 9

“J-tube”

• placed through stoma
• awake/asleep patient

Question 10

LMA cuff pressure

Answer 10

-cuff inflated to leak < 20 cm H20

Question 11

Complication of LMA use

Answer 11

• sore throat/trauma
• hypoglossal nerve injury d/t excessive cuff pressures/N2O -> temporary vocal cord paralysis
• gastric distention/aspiration