What is the minimum AHI to diagnose obstructive sleep apnea according to the material?

What is the minimum AHI to diagnose obstructive sleep apnea according to the material?

• A. >5/hr
• B. >3/hr
• C. >10/hr
• D. >15/hr

Answer: (A)

The key idea is how the apnea-hypopnea index (AHI) is used to define obstructive sleep apnea. AHI is the number of apnea events plus hypopneas per hour of sleep. According to the material, the minimum AHI that indicates obstructive sleep apnea is greater than 5 events per hour. This threshold means that once the sleep study shows more than five pauses or reductions in breathing per hour, OSA is diagnosed, with higher AHIs corresponding to increasing severity: mild is above 5 up to 15, moderate above 15 up to 30, and severe above 30. While some guidelines emphasize symptoms or other clinical factors for a full diagnosis, the numeric cutoff given here is >5 per hour. The other options (greater than 3, 10, or 15) don’t represent the initial diagnostic threshold in this material; they either fall below the standard minimum or describe higher severity ranges rather than the starting point for diagnosis.

The key idea is how the apnea-hypopnea index (AHI) is used to define obstructive sleep apnea. AHI is the number of apnea events plus hypopneas per hour of sleep. According to the material, the minimum AHI that indicates obstructive sleep apnea is greater than 5 events per hour. This threshold means that once the sleep study shows more than five pauses or reductions in breathing per hour, OSA is diagnosed, with higher AHIs corresponding to increasing severity: mild is above 5 up to 15, moderate above 15 up to 30, and severe above 30. While some guidelines emphasize symptoms or other clinical factors for a full diagnosis, the numeric cutoff given here is >5 per hour. The other options (greater than 3, 10, or 15) don’t represent the initial diagnostic threshold in this material; they either fall below the standard minimum or describe higher severity ranges rather than the starting point for diagnosis.