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Related Concept Videos

Narcolepsy01:07

Narcolepsy

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Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
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Sleep Apnea01:21

Sleep Apnea

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Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
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Somnambulism, commonly known as sleepwalking, involves individuals engaging in activities ranging from simple walking to more complex behaviors such as driving. Sleepwalking typically occurs during the slow-wave sleep stages 3 and 4 early in the night when the person is not dreaming, contradicting the myth that sleepwalkers are acting out their dreams.
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Sleep-Wake Cycles01:24

Sleep-Wake Cycles

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NREM Sleep
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Insufficient Sleep and Sleep Deprivation01:13

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Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
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Sleep syncope-A systematic review.

Priya L Raj1, Robert S Sheldon1, Diane Lorenzetti2,3

  • 1Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.

Frontiers in Cardiovascular Medicine
|October 24, 2022
PubMed
Summary
This summary is machine-generated.

Sleep syncope, a form of vasovagal syncope, predominantly affects females with a history of daytime episodes. Gastrointestinal symptoms are a common and significant feature in these patients.

Keywords:
prodromessleep syncopesupine syncopesystematic reviewvasovagal syncope

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Area of Science:

  • Cardiology
  • Neurology
  • Gastroenterology

Background:

  • Sleep syncope is a distinct subtype of vasovagal syncope triggered by awakening.
  • This study investigates clinical features, gastrointestinal symptoms, and body position associated with sleep syncope.

Approach:

  • A systematic literature review of MEDLINE and EMBASE was conducted up to January 2022.
  • Data from 13 studies involving 116 patients were analyzed for syncope-associated symptoms and clinical characteristics.

Key Points:

  • The majority of sleep syncope patients (61.4%) were female, with a mean age of 46.9 years.
  • A supine body position was reported in 52.5% of cases.
  • Gastrointestinal symptoms were highly prevalent, affecting 65.6% (upper) and 86.0% (lower) of patients.

Conclusions:

  • Sleep syncope predominantly affects females with a history of daytime vasovagal syncope.
  • The frequent presence of gastrointestinal symptoms is a key characteristic of sleep syncope.