Question

Which of the following statements about the use of CPAP (Continuous Positive Airway Pressure) in Obstructive Sleep Apnea (OSA) is correct?

• A. CPAP increases throat air pressure during sleep
• B. CPAP prevents airway collapse only when used with an oral appliance
• C. CPAP is primarily used for OSA cases requiring invasive treatment
• D. CPAP is not effective in severe cases of OSA

Hint:

CPAP acts as a pneumatic splint — it keeps the airway open by maintaining continuous positive pressure.

Answer 1

The Correct Option is A

Step 1: Understanding OSA.
Obstructive Sleep Apnea occurs due to repeated collapse of the upper airway during sleep.
This leads to intermittent airflow obstruction and oxygen desaturation.
Step 2: Mechanism of CPAP.
CPAP delivers a continuous stream of positive air pressure through a mask.
This positive pressure acts as a pneumatic splint to keep the upper airway open.
It increases throat air pressure during sleep and prevents airway collapse.
Step 3: Evaluation of Other Options.
CPAP works independently and does not require an oral appliance to be effective.
It is a non-invasive treatment modality.
It is highly effective even in severe OSA cases and is considered first-line therapy.
Step 4: Conclusion.
Therefore, the correct statement is that CPAP increases throat air pressure during sleep.