PMID- 2653302 OWN - NLM STAT- MEDLINE DCOM- 19890526 LR - 20151119 IS - 0095-6562 (Print) IS - 0095-6562 (Linking) VI - 60 IP - 3 DP - 1989 Mar TI - Evaluation of the sleepy crewmember: USAFSAM experience and a suggested clinical approach. PG - 263-7 AB - From 1958 to 1986, 27 crewmembers with suspected sleep disorders were referred to the USAF School of Aerospace Medicine. The presenting complaint in most cases was excessive daytime sleepiness (EDS). Prior to 1984, evaluations included neurologic and psychiatric testing, screening laboratory studies, and awake and asleep electroencephalography. Polysomnography and sleep latency studies were included after 1984. In the majority of cases, the etiology of the complaint could not be determined. The prevalence of EDS is estimated to be between 0.3% and 4.0% of the adult population. Major causes cited in the world literature include the sleep apnea syndromes, narcolepsy, parasomnias interrupting sleep, hypersomnia secondary to systemic or affective disorders, and essential hypersomnia. Current sleep lab techniques and human leukocyte antigen (HLA) typing are reported to make the diagnosis in up to 90% of sleep disorders. Evaluation of EDS should begin with a history emphasizing sleep habits, work schedules, daytime naps, and presence of vegetative signs. A sleep diary will allow a more accurate estimate of the quantity of nocturnal sleep. This diary may reveal poor sleep hygiene or insomnia. Polysomnography and/or multiple sleep latency determination can then be used to diagnose sleep apnea, parasomnias, and narcolepsy. FAU - Katchen, M AU - Katchen M AD - Neuropsychiatry Branch, USAF School of Aerospace Medicine, Brooks Air Force Base, Texas. FAU - Gronseth, G S AU - Gronseth GS LA - eng PT - Case Reports PT - Journal Article PT - Review PL - United States TA - Aviat Space Environ Med JT - Aviation, space, and environmental medicine JID - 7501714 SB - IM MH - Adult MH - *Aerospace Medicine MH - Disorders of Excessive Somnolence/*diagnosis/epidemiology/etiology/physiopathology MH - Humans MH - Male MH - Narcolepsy/complications/epidemiology MH - Sleep Apnea Syndromes/complications/epidemiology MH - Sleep Wake Disorders/*diagnosis RF - 17 EDAT- 1989/03/01 00:00 MHDA- 1989/03/01 00:01 CRDT- 1989/03/01 00:00 PHST- 1989/03/01 00:00 [pubmed] PHST- 1989/03/01 00:01 [medline] PHST- 1989/03/01 00:00 [entrez] PST - ppublish SO - Aviat Space Environ Med. 1989 Mar;60(3):263-7.