44. Airway management

Question 1

Snoring and ventilation

Answer 1

Is a predictor of difficult mask ventilation

Question 2

Cricoid level
Carina level

Answer 2

Cricoid C6
Carina T5

Question 3

Values for difficult intubation

Answer 3

Neck 43cm
TD 6 cm
Opening 6 cm
Angle 8 degrees
St 12cm

Question 4

Trachea characteristics

Answer 4

From C6 to T5
10 - 15 cm
16 - 20 horseshaped rings
Innervated by recurrent laryngeal nerve

Question 5

How much time until saturation decreases 80%

Answer 5

In obese and kids 3 min
In healthy 9 min

Question 6

Predictors of difficult mask ventilation

Answer 6

OSA
male
> 55 y
BMI > 30
Mall 3/4
Beard
No teeth

Question 7

Narrowest part of the airway in kids < 6y

Answer 7

Cricoid cartilage

Question 8

Balloon cuff pressure

Answer 8

Max 25. no minimum

Question 9

Sniffing position characteristics

Answer 9

Head 7 - 9 cm
Cervical angle 35 degrees
External auditory - external notch alignment

Question 10

Sellick maneuver pressure

Answer 10

10 Nw, 30 after loss of consciousness

Question 11

In obese patient, best position for extubation

Answer 11

Head up

Question 12

THRIVE

Answer 12

60 l/min O2, 3 min from the nose

Question 13

Dosage for intubation without relaxants

Answer 13

2 mg/kg propofol + 4-5 mcg / kg fentanyl

Question 14

Age limit for cricothyrotomy

Answer 14

Not less than 6 years

Question 15

VORTEX proptocol

Answer 15

Maximum 3 attempts (one by a senior doctor) to escalate to surgical airway
Mask ventilation, LMA, Tubus

Question 16

A chin lift…

Answer 16

(with mouth closure) increases longitudinal tension in the pharyngeal muscles, counteracting the tendency of the pharyngeal airway to collapse