Sun Sleep: Sleep Apnea Hypopnea Index

The apnea hypopnea index ahi is a scale that tells whether you have a sleep disorder called apnea and if so how serious it is. Based on the ahi the severity of osa is classified as follows.

Apnea Hypopnea And Rera Defined Apnea Sleep Apnea Sleep Apnea

It represents the sleep apnea score against what that score means.

Sleep apnea hypopnea index. Our ahi index is 30. Sleep apnea is when you stop breathing for 10 seconds or more. Apnea hypopnea index ahi measures sleep apnea severity.

To create some meaning i ve got to give you the table that is used to refer to the results. Tst is the total sleep time. Apnea hypopnea index ahi the ahi is the number of apneas or hypopneas recorded during the study per hour of sleep.

If your airflow in. Doctors also use the term hypopnea event which has a slightly different explanation compared with the apnea event. Sleep apnea is defined as cessation of nasal or oral airflow for at least 10 seconds this one episode is called an apnea event or apnea episode.

In a simple form the apnea hypopnea index formula is. The apneas pauses in breathing must last for at least 10 seconds and be associated with a decrease in blood oxygenation. To understand the definition of apnea or hypopnea index you need to know what is an apnea event or hypopnea event.

Apnea hypopnea 60 tst in minutes where. The ahi is the sum of the number of apneas pauses in breathing plus the number of hypopneas periods of shallow breathing that occur on average each hour. The apnea hypopnea index or apnoea hypopnoea index ahi is an index used to indicate the severity of sleep apnea it is represented by the number of apnea and hypopnea events per hour of sleep.

To count in the index apneas and hypopneas collectively called events must have a duration of at least 10 seconds. It is generally expressed as the number of events per hour.

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