Multiple Sleep Latency Test (MSLT): How Naps Can Diagnose Sleep Disorders0

For some sleep disorders an overnight
polysomnogram (PSG) test may not be conclusive enough to determine a person’s specific type of sleep disorder. Occasionally, patients will be asked to return to the sleep clinic during the day to have a multiple sleep latency test (MSLT).
So what exactly is a MSLT? What does it measure? How is it different from a PSG or a maintenance of wakefulness test (MWT)? And what sleep disorders is it used to diagnose?

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