The use of sleep tests for suspected sleep disordered breathing.

Rapid advancements in technology have expanded the range of available methods for testing patients with sleep disordered breathing. This article reviews the components of a sleep test and the currently available technologies that are used in standard attended, laboratory (level 1) studies. This paper also reviews the advantages and limitations of unattended at-home evaluations (level 2, 3, and 4 studies) for patients with suspected sleep disordered breathing.