CPSGT Positive Airway Pressure Therapy & Treatment Modalities

Question 1

What is the primary mechanism by which CPAP treats obstructive sleep apnea?

Accepted Answer

Creates a pneumatic splint to keep the airway open

Answer

Reduces upper airway inflammation

Answer

Stimulates upper airway muscles electrically

Answer

Decreases the patient's respiratory drive

Question 2

Which PAP modality automatically adjusts treatment pressure throughout the night based on detected respiratory events?

Accepted Answer

APAP (Auto-titrating PAP)

Answer

CPAP

Answer

BiPAP

Answer

ASV (Adaptive Servo-Ventilation)

Question 3

What is the typical minimum starting pressure for CPAP titration in adult patients per AASM guidelines?

Accepted Answer

4-5 cm H2O

Answer

1-3 cm H2O

Answer

8-10 cm H2O

Answer

12-15 cm H2O

Question 4

BiPAP therapy delivers pressure on two levels. What are the correct terms for these two pressure settings?

Accepted Answer

IPAP and EPAP

Answer

PPAP and NPAP

Answer

Peak pressure and trough pressure

Answer

Inspiratory reserve and expiratory reserve

Question 5

Which PAP device modality is specifically indicated for patients with complex sleep apnea or Cheyne-Stokes respiration associated with heart failure?

Accepted Answer

ASV (Adaptive Servo-Ventilation)

Answer

CPAP

Answer

APAP

Answer

Standard BiPAP

Question 6

A patient complains of aerophagia (air swallowing) during CPAP therapy. What is the most likely cause?

Accepted Answer

High pressure causing air to enter the esophagus

Answer

Excessive mask leak

Answer

Incorrect mask size

Answer

Low humidity setting

Question 7

What is the primary parameter used to evaluate the effectiveness of PAP therapy during a titration polysomnogram?

Accepted Answer

Reduction in Apnea-Hypopnea Index (AHI)

Answer

Reduction in oxygen desaturation events only

Answer

Improvement in sleep efficiency

Answer

Increase in total sleep time