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Sleep Disorders



Sleep Disorder Center
UnityPoint Health - Trinity - Main Campus

Types of Sleep Disorders and Testing


Sleep disorders are any condition that effect sleep patterns and interfere with falling asleep, staying asleep, or remaining awake.  Some of the common conditions are:  Insomnia, Narcolepsy, Sleep Apnea and Snoring, excessive periodic Leg movements during sleep, respiratory disease that effects oxygenation in blood stream, patterns of disruptive sleep, nightmares, night terrors, bedwetting, sleepwalking just to name a few. 



The Sleep Medicine providers may use one or a combination of the following screens:


Polysomnogram (PSG) consists of collecting information about movements, breathing, heart rate, snoring and other events during a sleep study.  This is typically done overnight, but may be done during daytime hours if patient is a shift-worker or sleeps during the day.

Multiple Sleep Latency (MSLT) assesses your level of daytime sleepiness.  MSLTs are often recommended for potential Narcolepsy and are usually done during the day (following an all-night sleep study).  Patients are screened during five 20-minute nap sessions, approximately 2hours apart.  Between naps you will be asked to stay awake.

Maintenance of Wakefulness Tests (MWT) is designed to assess your level of daytime alertness.  An MWT will show whether you are able to stay awake for a certain amount of time.  This type of sleep study will be conducted in a dim, quiet room and you will be asked to sit peacefully for 40 minutes for each trial.