Diagnosis of nocturnal respiratory disorders: an evaluation of screening tests.

Polysomnography in an attended hospital laboratory setting is the gold stan dard for the diagnosis of sleep-related breathing disorders. However this m ethod is expensive and waiting fists are long. Portable recording devices t hat can be used at home have been recently developed to improve, upon the p roblems of polysomnography. The review the recent portable devices validate d by polysomnography and discuss their precise role in the assessment of sl eep-related respiratory disorders.