Leakage from the mouth
If you use a nasal mask, try to keep your mouth closed during treatment. Air leaking from the mouth may reduce the effectiveness of your treatment and can make your mouth feel dry. If leaking from the mouth persists, consult your physician or your LISA® specialist.
If your spouse or partner complains of excessive noise from the CPAP, this is probably due to mask leakage. Modern devices are, in fact, extremely quiet. Check the tension of the harness and the tilt of the mask. If the problem persists, contact your LISA® specialist.
Dry mouth at night
A dry mouth at night may result from sleeping with your mouth open. This opening is promoted by muscle relaxation during sleep. Air escapes from your mouth and the airflow dries the inside of the mouth, this being aggravated by the increased airflow produced by the CPAP to try and maintain effective pressure.
Using a chinstrap may help prevent the mouth from opening.
A humidifier may help reduce dryness of the mouth considerably.
In some cases, your physician may prescribe a mask covering both mouth and nose (an oral-nasal mask).
Always contact your LISA® specialist first to discuss the problem.