Apnea Hypopnea Index (AHI)


AHI or Apnea Hypopnea Index is a system used to measure the severity level of Sleep Apnea on a scale from normal to severe. It counts the number of Hypopnea events that occur per hour.

  • Normal – less than 5 events per hour
  • Mild – 5-15 events per hour
  • Moderate – 16-30 events per hour
  • Severe – over 30 events per hour
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