Polysomnography: addressing the need for standards.

The field of sleep disorders medicine is facing enormous challenges as it strives to gain recognition from the medical profession, the public and government. One of these challenges is to ensure that limited resources for diagnosis are used wisely. The authors argue that the standards for polysomnography developed by the Canadian Sleep Society and the Canadian Thoracic Society (see pages 1673 to 1678 of this issue) will go a long way toward ensuring that this expensive resource is used prudently. In the mean-time, more research is needed to determine valid measures of the impact of sleep disorders and to establish the reliability of different diagnostic methods.