$$\text{O}_2 \text{(alveoli)} \rightarrow \text{O}_2 \text{(capillaries)}$$

Question 1

Which structure marks the boundary between the upper and lower airway?

Accepted Answer

Larynx

Question 2

A patient presents with a high-pitched whistling sound during inhalation. What is the most likely cause of this sound?

Accepted Answer

Severely narrowed air passage (stridor)

Question 3

Which airway maneuver should be used for an unconscious patient with suspected spinal injury?

Accepted Answer

Jaw-thrust maneuver

Question 4

What is the primary function of an oropharyngeal airway (OPA)?

Accepted Answer

To prevent the tongue from blocking the airway

Question 5

When inserting an OPA in an adult, what is the correct method for sizing the device?

Accepted Answer

Measure from the corner of the mouth to the tip of the earlobe

Question 6

Which of the following is a contraindication for using a nasopharyngeal airway (NPA)?

Accepted Answer

Basilar skull fracture

Question 7

A child is found with breathing limited to the abdomen and nasal flaring. What does this indicate?

Accepted Answer

Inadequate airway

Question 8

Which equation best represents the relationship between airway resistance and airway diameter?

Accepted Answer

$$R \propto \frac{1}{d^4$}$$

Question 9

During suctioning, what is the maximum recommended duration to minimize complications?

Accepted Answer

10 seconds

Question 10

A patient with diminished mental status is found supine and snoring. What is the most appropriate initial intervention?

Accepted Answer

Perform a manual airway opening maneuver

Question 11

Which sound is most indicative of fluid or secretions in the airway?

Accepted Answer

Gurgling

Question 12

What is the main risk when using suction in infants and small children?

Accepted Answer

Vagal stimulation causing bradycardia

Question 13

Which airway adjunct is preferred for a patient with an intact gag reflex and clenched teeth?

Accepted Answer

Nasopharyngeal airway

Question 14

If a choking adult cannot be ventilated and abdominal thrusts fail, what is the next step?

Accepted Answer

Begin CPR

Question 15

Which device is most effective for suctioning the mouth and pharynx in unresponsive patients?

Accepted Answer

Rigid pharyngeal tip (Yankauer)

Question 16

What is the correct sequence for inserting an OPA in an adult?

Accepted Answer

Insert with tip pointing up, then rotate 180 degrees

Question 17

Which of the following is NOT a sign of an inadequate airway?

Accepted Answer

Ability to speak clearly

Question 18

A patient with severe facial trauma is at risk for airway compromise. What is the most immediate concern?

Accepted Answer

Frequent suctioning may be required

Question 19

Which formula describes the exchange of gases at the alveolar-capillary interface?

Accepted Answer

$$	ext{O}_2 	ext{(alveoli)} ightarrow 	ext{O}_2 	ext{(capillaries)}$$

Question 20

Which airway device is indicated when basic airway maneuvers and adjuncts fail and long-term airway maintenance is needed?

Accepted Answer

Supraglottic airway

Airway Management: Structure, Function, and Emergency Procedures

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