About 10 percent of adults report not getting enough rest or sleep every day in the past month, according to a new four-state study released by the Centers for Disease Control and Prevention’s (CDC) Morbidity and Mortality Weekly Report.
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The sleep patterns of patients in the intensive care unit are so superficial that they barely spend any time in the restorative stages of sleep that aid in healing, UT Southwestern Medical Center physicians have found.
“Current clinical-care protocols routinely and severely deprive critically ill patients of sleep at a time when the need for adequate rest is perhaps most essential,” said Dr. Randall Friese, assistant professor of burn, trauma, and critical care at UT Southwestern and lead author of a study appearing in The Journal of Trauma: Injury, Infection and Critical Care.
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“Although steering deviation was not significantly affected by sleep restriction alone, alcohol at a BAC as low as 0.025 g/dL in combination with sleep restriction was sufficient to significantly impair steering ability,” said Vakulin. “This combination may considerably reduce the threshold for safe driving, as suggested by the steering deviation data and an increase in off-road collisions following sleep restriction and alcohol ingestion in this study.”
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Mayo Clinic researchers and a group of international collaborators have discovered a correlation between an extreme form of sleep disorder and eventual onset of parkinsonism or dementia. The findings appear in the current issue of the journal Brain.
Clinical observations and pathology studies, as well as research in animal models, led to the findings that patients with the violent rapid eye movement sleep (REM) behavior disorder (RBD) have a high probability of later developing Lewy body dementia, Parkinson’s disease or multiple system atrophy (a Parkinson’s-like disorder), because all of these conditions appear to stem from a similar neurodegenerative origin.
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TORONTO — Heart failure patients with untreated sleep apnea are more likely to die than those without this sleep disorder, says a study to be published in the Journal of the American College of Cardiology.
The study followed 164 patients with heart failure for more than seven years, and found that those with obstructive sleep apnea (OSA) had double the death rate of those patients who did not have sleep apnea. Of the 37 patients with untreated OSA, the death rate was 24 percent in contrast to 12 percent for the 113 patients with no sleep apnea.
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When asthmatics are awake, they can turn to their inhalers to open their airways. But when they sleep, many of them continue to struggle with breathing — and an understanding of their sleep-related problems may help doctors better diagnose and treat their patients’ asthma, according to new University of Michigan Health System research.
Symptoms of sleep apnea and other breathing problems during sleep are common among people with asthma, according to the research presented at the American Thoracic Society’s 2005 International Conference.
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The power of a new technique to map connections among nerve cells in the brain has a UT Southwestern Medical Center scientist dreaming of solving the mysteries of sleep.
By tracking which nerve cells in the mouse brain stimulate others, researchers in Japan and at UT Southwestern found that a type of neuron responsible for keeping animals awake receives inhibitory signals from neurons active only during sleep, as well as reinforcing, positive signals from nerve cells that are very active during wakefulness.
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Evidence is mounting that sleep, or even a nap, may actually enhance information processing and learning.
New experiments by National Institute of Mental Health (NIMH) grantee Alan Hobson, M.D., Robert Stickgold, Ph.D., and colleagues at Harvard University show that a midday snooze reverses information overload and that a 20 percent overnight improvement in learning a motor skill is largely traceable to a late stage of sleep that some early risers might be missing.
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Researchers studying three families with the same unusual sleep pattern have uncovered the first hereditary sleep disorder in humans caused by a single gene. Neurologist Christopher Jones and Howard Hughes Medical Institute investigator Louis Ptácek, both at the University of Utah, are now searching for the gene that causes the disorder known as familial advanced sleep phase syndrome (FASPS).
Ptácek and his colleagues concluded that a single gene was responsible for FASPS by studying how the condition was passed along from one generation to the next within the affected families. In this case, inheritance seemed to follow the same simple pattern seen with other single gene traits, such as eye color.
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