[Long-term continuous positive airway pressure (CPAP) use in obstructive sleep apnea].

Background: The use of CPAP is the conventional therapy for the Obstructive Sleep Apnea Syndrome (OSAS).

Aim: To establish the proportion of OSAS patients with CPAP indication who use it in the long-term and to determine predictive factors of adherence.

Patients And Methods: Structured survey through personal interview or phone call, applied to all patients who had polisomnographically documented OSAS and CPAP titration at the Pontificia Universidad Católica de Chile Sleep Disorders Center between January 1998 and November 2001.