What is the apnea index (AI) according to the provided data?

What is the apnea index (AI) according to the provided data?

• A. 4/hr
• B. 9/hr
• C. 5/hr
• D. 20/hr

Answer: (D)

The apnea index measures how many complete pauses in breathing (apneas) occur per hour of sleep. It is calculated by taking the total number of apneas observed during sleep and dividing by the total sleep time in hours. In the provided data, this calculation yields 20 apneas per hour, so the apnea index is 20 per hour. For example, if there were 60 apneas over 3 hours of sleep, AI would be 60 ÷ 3 = 20 per hour. This value specifically counts apneas (not hypopneas or other breathing events) and, when combined with hypopneas, forms the apnea-hypopnea index if needed.

The apnea index measures how many complete pauses in breathing (apneas) occur per hour of sleep. It is calculated by taking the total number of apneas observed during sleep and dividing by the total sleep time in hours. In the provided data, this calculation yields 20 apneas per hour, so the apnea index is 20 per hour. For example, if there were 60 apneas over 3 hours of sleep, AI would be 60 ÷ 3 = 20 per hour. This value specifically counts apneas (not hypopneas or other breathing events) and, when combined with hypopneas, forms the apnea-hypopnea index if needed.