How is pressure applied to the airway?
The most common method for applying the pressure to the airway is with a soft mask shaped to fit over the nose and seal against the face. A comfortably fitting mask is the most important part of your CPAP therapy. A comfortable mask ensures effective treatment. If you have trouble adapting to your first mask, there are many other shapes and styles to choose from. Other devices are sometimes used, such as nose tubes, which seal inside the nostrils, or full-face masks, which fit over the mouth and nose.