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Ronald D. Chervin MD
Jun
21
2009
This entry was posted by admin on Sunday, June 21, 2009 at 10:53 am (UTC), and is categorically filed in Fatigue, Top News.
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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Interesting Apnea Statistics
~~ Apnea in United States ~~
As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the U.S. population
was 306,340,710. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 21,443,850 apneics in the U.S.
~~ Apnea around the world ~~
As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the world population
was 6,777,286,604. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 474,410,062 apneics in the world.
