It’s the number of times per sleep hour that your upper airway (soft palate at your throat or tongue) partially or completely collapses, causing a drop in blood oxygen levels or a slight arousal from sleep. The Apnea-Hypopnea Index (AHI) measurement is usually delivered within the setting of a sleep study report. Apnea is the total absence of airflow through your mouth and nose, even when there’s an effort to breathe (as in obstructive sleep apnea) as measured at the abdomen and chest.Hypopnea is a partial collapse of your airway.It illustrates the average number of hypopneas and apneas per hour for the timeframe. Therefore, we’ll go over some common readings that many CPAP machines measure, includingĪHI stands for Apnea Hypopnea Index. While these are fairly easy to interpret, you should really understand what the acronyms connected to the numbers are. Many come with a smiley face that lets you know everything is running properly and a frowning face to let you know there’s a problem. It’s important to understand and monitor the CPAP machine readings so you and your doctor can be assured your CPAP therapy is working as it should.Īlthough these machines can vary by function, complexity, and price, the best are those that include a variety of statistics about your sleep patterns each night. Modern CPAP machines are incredibly sophisticated and capable devices that can provide a wide range of specific results recorded as data throughout the night.
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