기면증 일예에 대한 다원수면검사 소견

Polysomnographic Findings of A Case of Narcolepsy

The authors experienced a patient who complained of excessive daytime sleepiness and cataplexy, and confirmed the diagnosis of narcolepsy through overnight polysomnography and M ultiple Sleep Latency Test(MSLT). In ovemigth polysomnography, total bed time was 491 minutes, total sleep time was 325 minutes and sleep efficiency was 66.2%. Sleep latency was 36 minutes and latency to REM sleep was 253 minutes. Fractions of each sleep stages by total sleep time were 54.5% (Stage 1)，19.4% (Stage 2), 15.7% (Stage 3+4)，10.5% (REM ) respectively. Multiple Sleep Latency Test was performed at 10 : 00，12 : 00，14 : 00，16 * 00. In the test Sleep latency was shortened by under 5 minutes at all of the 4 times test and Sleep Onset REM (SO REM ), a characteristic polysomnographic feature of the narcolepsy，was observed two times at test 14 : 00 and 16 • 00. The authors reported the polysomnographic findings of a case of narcolepsy with literature review.