Sleep-disordered breathing in Vietnam veterans with posttraumatic stress disorder.

Objective: : To study the prevalence of sleep-disordered breathing (SDB) in Vietnam- era veterans.

Methods: : This was an observational study of Vietnam-era veterans using unattended, overnight polysomnography, cognitive testing, and genetic measures.

Results: : A sample of 105 Vietnam-era veterans with posttraumatic stress disorder: 69% had an Apnea Hypopnea Index >10.