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Understanding the AHI index
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SuperSleeper Offline

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Machine: PR System One REMstar Auto (DS560)
Mask Type: Nasal pillows
Mask Make & Model: ResMed Mirage Swift II
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CPAP Pressure: 12.5 - 18.5 cmH20 (auto range)
CPAP Software: SleepyHead

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Sex: Male
Location: Illinois, USA

Post: #1
Understanding the AHI index
[parts of this thread were copied from the old forum]

midwayranch Wrote:I have a Apnea index of 5.5 and a hypopnea index of 18.6. The combined AHI index is 24.1 but where is a chart that explains where that falls in terms of severity?
02-27-2012 09:01 AM
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SuperSleeper Offline

Administrators

Posts: 9,961
Joined: Feb 2012

Machine: PR System One REMstar Auto (DS560)
Mask Type: Nasal pillows
Mask Make & Model: ResMed Mirage Swift II
Humidifier: none
CPAP Pressure: 12.5 - 18.5 cmH20 (auto range)
CPAP Software: SleepyHead

Other Comments: Have diabetes Type II

Sex: Male
Location: Illinois, USA

Post: #2
RE: Understanding the AHI index
There are no conclusive answers for what constitutes mild, moderate or severe Sleep Apnea. There seems to be a degree of consensus on the ranges; however, opinions do vary amongst professionals.

Generally speaking, here's the consensus opinion:

AHI < 5/h = No Sleep Apnea

AHI 5 to < 15/h = Mild Sleep Apnea
- (some say that 5-10 would be called "borderline OSA")

AHI 15 to < 30/h = Moderate Sleep Apnea

AHI > or = 30/h = Severe Sleep Apnea


So, under these guidelines, your OSA would be moderate Sleep Apnea (albeit on the higher side).

But don't read too much into the numbers. Your numbers can and will change as your body, age and medical conditions change, and there is quite a bit of variance between various sleep centers, their equipment and ability to accurately determine these numbers. More important is that you get treated and that you feel better.

SuperSleeper
Apnea Board Administrator
www.ApneaBoard.com


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.

02-27-2012 09:02 AM
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