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A passover humidification system passes the air from the CPAP over a room temperature body of water in order to pick up moisture. Humidification doesn't really help with OSA; it helps with side effects caused by using CPAP treatment.

If you are on CPAP treatment and are experiencing nasal dryness, humidification should help decrease the symptoms. The dryness is caused by the increased flow of air through the nasal passages. Humidification adds moisture to the air you are breathing and helps the nasal passages deal with the increased flow of air.

A Heated Humidification system is able to provide higher levels of humidity than a passover humidification system. If a passover humidification system resolves your dryness symptoms, then that is all you really need.


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