Results of a study published in the June 15, 2009 issue of the Journal of Clinical Sleep Medicine show that complaints of fatigue and tiredness in patients with obstructive sleep apnea (OSA) improved significantly with good adherence to continuous positive airway pressure (CPAP) therapy, suggesting that — like the symptom of excessive daytime sleepiness — these complaints are important symptoms of obstructive sleep apnea.
The results demonstrate good adherence to CPAP therapy for an average of five or more hours per night resolved baseline complaints of fatigue in 45 of 80 participants (56 percent), tiredness in 56 of 96 participants (58 percent) and sleepiness in 48 of 72 participants (67 percent); improvement of each symptom was significantly better among CPAP-adherent participants than among inadequately treated subjects. A baseline complaint of lack of energy also was resolved in 47 of 100 participants with good CPAP adherence, but this improvement failed to reach statistical significance when compared with inadequately treated participants.
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A research abstract presented at Sleep 2009 demonstrates that sleep selectively preserves memories that are emotionally salient and relevant to future goals when sleep follows soon after learning. Effects persist for as long as four months after the memory is created.
Results show the sleeping brain seems to calculate what’s most important about an experience and then selects only what is adaptive for consolidation and long-term storage. Across delays of 24 hours, or even three-to-four months, sleeping soon after learning preserved the trade-off as compared to waiting an entire day before going to sleep.
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Research engineers and sleep medicine specialists from two Michigan universities have joined technical and clinical hands to put innovative quantitative analysis, signal-processing technology and computer algorithms to work in the sleep lab. One of their recent findings is that a new approach to analyzing sleep fragmentation appears to distinguish fibromyalgia patients from healthy controls.
Joseph W. Burns, a research scientist and engineer at the Michigan Tech Research Institute (MTRI); Ronald D. Chervin, director of the University of Michigan’s Michael S. Aldrich Sleep Disorders Laboratory; and Leslie Crofford, director of the Center for the Advancement of Women’s Health at the University of Kentucky, report the results of their study in the August 2008 issue of the journal Sleep Medicine.
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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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Patients who snore or have other symptoms of sleep apnea often undergo testing in a sleep laboratory to measure the number of breathing pauses and arousals that occur while they slumber. But doctors find these tests do not effectively predict daytime consequences suspected to arise from sleep apnea, such as sleepiness in adults or hyperactivity in children.
Now, neurologists at the University of Michigan Health System and engineers at Altarum Institute in Ann Arbor, Mich., have discovered evidence that the disruption of sleep in sleep apnea may be much more frequent than the breathing pauses, or apneas, themselves.
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