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Query: UMLS:C0037315 (sleep apnea)
 8,000 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

35 hypersomniacs (20 with obstructive sleep apnea and 15 with narcolepsy) and 15 controls estimated sleep latency during systematic trials of attempting to remain awake during the day. The error in subjective assessment of sleep latency was more variable for both patient groups than for controls. In addition, narcoleptics could not provide a determination of sleep latency or differentiate sleep-wake states on nearly 23% of all trials. Ratings on a subjective sleepiness scale did not covary with objective sleep latency for any hypersomniac. The findings suggested that patients with either sleep apnea or narcolepsy had difficulty differentiating sleep and quiet wakefulness during the day.
Percept Mot Skills 1988 Apr
PMID:Hypersomnia and the perception of sleep-wake states: some preliminary findings. 339 21

38 male patients with obstructive sleep apnea were asked to complete 2 weeks of rating symptoms, physical examination, diagnostic polysomnography, and MMPI testing prior to being placed on nasal continuous positive airway pressure (CPAP) therapy. Six months later, 26 (72.2%) of the 36 subjects available for follow-up showed continued compliance. A regression analysis conducted with those 28 subjects who completed all pretreatment measures showed that continued therapy was predicted by such pretreatment measures as patients' body mass index, ratings of daytime sleepiness and nocturnal sleep quality, and MMPI Depression and Hypochondriasis scale scores (R2 = 0.63). Eventual compliers had a higher Body Mass Index, reported less daytime sleepiness and better nocturnal sleep quality, and scored lower on the MMPI D and Hs scales prior to treatment than did the noncompliers. A linear discriminant function analysis with analog cross-validation showed these five predictors would identify approximately 80% of eventual noncompliers and 97% of those who display compliance. It was concluded that subjective report and personality measures may be useful in predicting long-term use. Additional studies are needed to assess the clinical significance of the noted MMPI scale elevations among sleep apnea patients in general and among those patients who display eventual noncompliance.
Percept Mot Skills 1994 Jun
PMID:Psychological status, syndromatic measures, and compliance with nasal CPAP therapy for sleep apnea. 793 34

Snoring is a common phenomenon and a primary symptom in obstructive sleep apnea syndrome, a sleep-related breathing disorder in which neuropsychological function is reported to be impaired. The first purpose of the present study was to compare cognitive and motor function in 25 heavy nonapneic snorers and 26 sleep apneics. As the basis for impairments in heavy nonapneic snorers is still unclear, the influence of nighttime breathing disturbances and morning alertness, respectively, on daytime performance was evaluated too. Nonapneic snorers exhibit more slow wave sleep and tend to have fewer changes in sleep stage than sleep apnea patients, but values for other sleep variables are similar. Snorers also show comparable alertness. Deficits in immediate visual memory and in visuospatial reasoning are not found. However, there are some indications that snorers show decreased manual dexterity and eye-hand coordination for the nonpreferred hand and that they have deficits in focused attention. In addition, snorers may show difficulties in finger-tapping speed. These performance measures tend to be associated with reduced morning alertness, except for the score on focused attention which has a tendency to be related to the nocturnal breathing disturbances.
Percept Mot Skills 1997 Jun
PMID:Psychomotor and cognitive performance in nonapneic snorers: preliminary findings. 922 37