DAANCE Airway Management and Oxygen Therapy

Question 1

What is the most common cause of airway obstruction in a sedated dental patient?

Accepted Answer

Tongue falling back against the posterior pharynx

Answer

Laryngospasm

Answer

Foreign body aspiration

Answer

Bronchospasm

Question 2

Which oxygen delivery device can provide the highest inspired oxygen concentration (up to 90–100%)?

Accepted Answer

Non-rebreather mask

Answer

Nasal cannula

Answer

Simple face mask

Answer

Venturi mask

Question 3

The head-tilt chin-lift maneuver opens the airway primarily by:

Accepted Answer

Extending the neck and displacing the tongue anteriorly

Answer

Flexing the neck to reduce airway resistance

Answer

Rotating the head to drain secretions

Answer

Compressing the hyoid bone upward

Question 4

At what SpO2 level should supplemental oxygen intervention typically be initiated during dental sedation?

Accepted Answer

Below 95%

Answer

Below 99%

Answer

Below 88%

Answer

Below 80%

Question 5

Which airway adjunct is contraindicated in a conscious or semiconscious patient who retains a gag reflex?

Accepted Answer

Oropharyngeal airway (OPA)

Answer

Nasopharyngeal airway (NPA)

Answer

Nasal cannula

Answer

Non-rebreather mask

Question 6

What is the primary purpose of preoxygenating a patient before initiating sedation?

Accepted Answer

To create an oxygen reserve that extends safe apnea time

Answer

To lower the patient's heart rate before drug administration

Answer

To verify that the nasal cannula is functioning

Answer

To reduce the required sedation drug dose

Question 7

A nasal cannula at 4–6 L/min delivers an approximate FiO2 of:

Accepted Answer

36–44%

Answer

21–24%

Answer

28–36%

Answer

60–80%