CRNA CRNA Airway Management 2

Question 1

What does the 3-3-2 rule assess in predicting difficult intubation?

Accepted Answer

Mouth opening, thyromental distance, and hyomental distance

Answer

The 3-3-2 rule evaluates: ≥3 finger-breadths mouth opening, ≥3 finger-breadths thyromental distance, and ≥2 finger-breadths hyomental space to predict intubation difficulty.

Question 2

A laryngeal mask airway (LMA) is contraindicated in which of the following situations?

Accepted Answer

Full stomach with risk of aspiration

Answer

LMAs do not protect the airway from regurgitation and aspiration; a full stomach or high aspiration risk is a primary contraindication.

Question 3

During nasotracheal intubation, in which naris should the tube be advanced to minimize resistance and bleeding?

Accepted Answer

The right naris (bevel faces the septum)

Answer

The right naris is preferred because advancing the tube with the bevel facing the nasal septum reduces turbinate trauma and epistaxis risk.

Question 4

What is the maximum safe duration of apnea in a healthy, well-preoxygenated adult patient before SpO2 begins to desaturate?

Accepted Answer

8–10 minutes

Answer

A healthy, well-preoxygenated adult can tolerate approximately 8–10 minutes of apnea before significant oxyhemoglobin desaturation occurs.

Question 5

Which technique can extend the safe apnea time during intubation attempts in an obese or pediatric patient?

Accepted Answer

Apneic oxygenation via nasal cannula at high flow

Answer

High-flow nasal cannula oxygen (15 L/min) during laryngoscopy maintains oxygenation through apneic diffusion, significantly extending safe apnea time.

CRNA - Certified Registered Nurse Anesthetist Practice Test

CRNA - Certified Registered Nurse Anesthetist Practice Test

CRNA CRNA Airway Management 2