Apnea-hypopnea index is used for?

Apnea-hypopnea index is used for?
a) Emphysema
b) Asthma
c) Hyaline membrane disease
d) Obstructive sleep apnea [OSAI
Correct Answer - D
Ans. D. Obstructive sleep apnea [OSAI
[Ref Harvard ed] Apnea Hypopnea Index (AHI)
The AHI is the number of apneas or hypopneas recorded during the
study per hour of sleep.
It is generally expressed as the number of events per hour.
Based on the AHI, the severity of OSA is classified as follows:
None/Minimal: AHI < 5 per hour
Mild : AHI 5, but < 15 per hour
Moderate : AHI 15, but < 30 per hour
Severe : AHI 30 per hour