This humidifier offers three levels of humidification (70, 80 or 90 percent) and the heated tube has five levels of temperature available, ranging from 4 to 16 degrees above the room temperature. These two features work together to deliver the optimum humidification level at the mask.
PR's Dry Box Technology is designed to trap water in the humidifier where it belongs, keeping it away from the machine. The one way valve on the air outlet port further guards against water exiting the humidifier.
The movement of CPAP air through the air passages can dry out the airway. Humidifiers add moisture to the airstream to help reduce irritation to the nasal passages. Not only are dry air passages uncomfortable, but the swelling can actually narrow the airway affecting therapy pressure requirements. Humidification is the comfort feature most commonly added to CPAP therapy. There are two kinds of humidifiers: cool passover and heated. A cool passover humidifier passes room temperature air over a chamber of room temperature water. A heated humidifier heats water to warm it and as the airstream passes over the heated water, it picks up the moisture and warms the air. The heated air is able to hold enough moisture to maintain a comfortable airway.
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