Degrees of excessive daytime sleepiness can be quantified by obtaining a comprehensive
history in conjunction with various diagnostic studies, such as an overnight polysomnography,
the multiple sleep latency test, and the maintenance of wakefulness test. Although
the multiple sleep latency test and maintenance of wakefulness test are laboratory-based
assessments of sleepiness and wakefulness, respectively, these findings on these tests
may not always correlate with patient safety in the workplace or while driving. Further
research is needed to improve the diagnostic accuracy of our assessments of excessive
daytime sleepiness.
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© 2009 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
