Navigation Links
Sleep deprivation used to diagnose sleepwalking
Date:3/18/2008

Somnambulism (sleepwalking), which usually involves misperception and unresponsiveness to the environment, mental confusion and amnesia about sleepwalking episodes, affects up to 4 percent of adults. There has been a sharp rise in the number of studies relating sleepwalking to aggressive and injurious behaviors, including homicides, but unlike most sleep disorders, sleepwalking is diagnosed on the basis of the patients clinical history, since there is no proven method of confirming the diagnosis.

Although clinical reports have suggested that sleep deprivation can lead to sleepwalking in predisposed patients, small studies using this method in the laboratory have yielded mixed results. A new, larger study found that sleep deprivation can precipitate sleepwalking in predisposed individuals and can therefore serve as a valuable tool in diagnosing this disorder. The study will be published in the Annals of Neurology (http://www.interscience.wiley.com/journal/ana), the official journal of the American Neurological Association.

Led by Antonio Zadra of the Universit de Montral, in Quebec, Canada, the study included 40 patients referred to a sleep disorder clinic for suspected sleepwalking between August 2003 and March 2007. All patients were examined and underwent one night of baseline sleep recording in the lab. The next day they went about their regular daytime activities, after which they returned to the lab in the evening, where they were constantly supervised to ensure they did not fall asleep. Recovery sleep took place the next morning, following 25 hours of wakefulness calculated from when they had awakened the previous morning. All patients were videotaped during each sleep period and the authors evaluated behavioral movements which ranged from playing with the bed sheets to getting up from the bed, to determine if they were sleepwalking episodes. They also scored the complexity of each episode on a 3-point scale.

The results showed that while 32 behavioral episodes were recorded from 20 sleepwalkers (50%) during baseline sleep, 92 episodes were recorded from 36 patients (90%) during recovery sleep. Sleep deprivation also significantly increased the proportion of sleepwalkers experiencing at least one complex episode. By yielding a greater number of episodes with a wider range of complexity, sleep deprivation can facilitate the video-polysomnographically-based diagnosis of somnambulism and its differentiation from other disorders, the authors state.

Sleepwalkers are thought to suffer from an inability to sustain stable slow-wave sleep (stage 3 and 4 sleep) and the study found that these patients had increased difficulty passing from slow-wave sleep to another sleep stage or arousal following sleep deprivation, which supports this view. It is also consistent with observations that other factors that deepen sleep, such as young age or fever, may help trigger sleepwalking in predisposed individuals.

The authors caution that observing behavioral events in the sleep lab following sleep deprivation is not always sufficient to confirm a diagnosis of sleepwalking in a medical-legal context. However, they note that: Used as a diagnostic tool, sleep deprivation shows a high sensitivity for somnambulism and may be clinically useful with a wider range of somnambulistic patients than previously reported. They conclude that the study supports recommending that sleepwalkers maintain a regular sleep schedule and avoid sleep deprivation.


'/>"/>

Contact: Amy Molnar
amolnar@wiley.com
Wiley-Blackwell
Source:Eurekalert

Related medicine news :

1. Scientists successfully awaken sleeping stem cells
2. Starved for Sleep? Watch Your Waistline
3. Surgery Only Works for Some Kids with Sleep Apnea
4. CMS Approves Home Sleep Testing for Diagnosis of OSA; AASM Experts Available for Comment
5. Poor sleep more dangerous for women
6. Physicians Say They Need More Sleep
7. Dallas Dentist Trains Navy Dentists on New Therapy to Treat Snoring and Obstructive Sleep Apnea
8. Sleep Medicine Associates Opens New Doors at Swedish - Cherry Hill Campus
9. Select Comfort Helps Families Sleep Better in Los Angeles
10. Figure Skater Peggy Fleming Teams With HealthSaver: Healthy Sleep Tips for a New You in 2008
11. Physicians report they need more sleep
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/26/2016)... ... May 26, 2016 , ... Cabot Corporation, Pfizer, and ... according to court documents and SEC filings. A jury has returned a ... American Optical Corporation, Case No. BC588866, Los Angeles County, California. The jury awarded ...
(Date:5/26/2016)... (PRWEB) , ... May 26, 2016 , ... ... in intellectual property (IP) to its specialty academic programs. , Answering to the ... college’s existing certificate programs in health law, and environmental and land use law. ...
(Date:5/26/2016)... ... May 26, 2016 , ... On Memorial Day, Hope For Heroes ... in military battle for the country. The nonprofit Hope For Heroes partnered with ... that empower independence for disabled military veterans, as well as police, firemen, and EMS ...
(Date:5/26/2016)... ... 2016 , ... Cardiac arrhythmia is a common complication following ... survival, reports a team of UPMC researchers in the largest study of its ... Thoracic and Cardiovascular Surgery, provide critical information that will hopefully lead to better ...
(Date:5/26/2016)... , ... May 26, 2016 , ... MadgeTech will be ... engineered, and manufactured in Warner, New Hampshire at the MadgeTech headquarters. With products sold ... monitoring solutions trusted by government agencies, including NASA. , In 2012, NASA strategically ...
Breaking Medicine News(10 mins):
(Date:5/24/2016)... Cirujanos holandeses han puesto en ... médicos a compartir sus mejores prácticas por el mundo ... médicos de Europa, África, Asia ... aplicación, que combina la transmisión en vivo con mensajería ... Educación   "Imagine un médico de Medicines ...
(Date:5/24/2016)... 24, 2016   , ... in overall bowel cleansing and superiority in ... leansing of the ascending ... , Norgine B.V. today announced new positive data from ... ascorbate bowel preparation) versus standard 2 litre PEG with ascorbate. The ...
(Date:5/24/2016)... -- ARANZ Medical  Ltd a specialist in ... been named the Coretex Hi-Tech Emerging Company of the Year ... Bruce Davey , CEO of ARANZ Medical says, "This ... to be recognised for the work we are doing to ... 35 countries around the world from Sub-Saharan Africa through to ...
Breaking Medicine Technology: