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Polysomnographic Data (polysomnographic + data)

Distribution by Scientific Domains

Medical Sciences	80%

Selected Abstracts

Gender, age and menopause effects on the prevalence and the characteristics of obstructive sleep apnea in obesity

EUROPEAN JOURNAL OF CLINICAL INVESTIGATION, Issue 12 2003
O. Resta
Abstract Background, In the 1970s and 80s it was believed that obstructive sleep apnea (OSA) was primarily a disease of men. The present study was addressed to evaluate the effect of gender and menopause on the prevalence and the characteristics of OSA and on anthropometric, clinical, respiratory and polysomnographic data in a population of obese individuals. Patients and methods, A total of 230 obese subjects (BMI , 30 kg m,2), 148 women and 82 men, aged 16,75 years, were recruited and evaluated for general and anthropometric parameters, respiratory function, sleep-related symptoms and sleep disorders of breathing. Results, Respiratory disturbance index (RDI) and the prevalence of OSA were lower in women than in men (P < 0·001 and P < 0·001, respectively). Among subjects < 55 years, neck circumference, percentage of predicted normal neck circumference (PPNC), waist-to-hip ratio (WHR), PaCO2, RDI and the prevalence of OSA were lower in female subjects (P = 0·05, P < 0·05, P < 0·001, P < 0·01 and P < 0·01, respectively). BMI, neck circumference, PPNC, WHR, RDI and the prevalence of OSA were higher in postmenopausal compared with premenopausal women (P < 0·01, P < 0·01, P < 0·01, P < 0·01 and P < 0·01, respectively). Conclusions, Our study demonstrates that (i) the male dominance regarding the prevalence and the severity of OSA disappears in men older than 55 years, and (ii) menopause seems to play a pivotal role in modulating both the presence and the degree of sleep disorder. [source]

Hypnic Headache Associated With Stage 3 Slow Wave Sleep

HEADACHE, Issue 9 2000
José Antonio Molina Arjona MD
We describe the polysomnographic data of a 79-year-old woman with an 11-year history of nocturnal headaches that were clinically consistent with hypnic headache. A polysomnographic study showed arousal at stage 3 slow wave sleep because of a headache episode. Although this finding could be nonspecific, it suggests the possible relationship between stage 3 slow wave sleep and hypnic headache. [source]

Association of body rolling, leg rolling, and rhythmic feet movements in a young adult: A video-polysomnographic study performed before and after one night of clonazepam

MOVEMENT DISORDERS, Issue 4 2008
Giovanni Merlino MD
Abstract We report clinical and polysomnographic data of a young adult affected by several forms of rhythmic movement disorder (RMD), present in the same night, including a new kind of it, known as rhythmic feet movements. The patient was monitored by means of three consecutive video-polysomnographic recordings, the first two performed to confirm the presence of the sleep disorder and the last one to observe the acute effectiveness of clonazepam on rhythmic movements. We discuss the characteristics of the RMD and the response to the first administration of pharmacological treatment, observed in our patient. © 2007 Movement Disorder Society [source]

Variability of sleep parameters across multiple laboratory sessions in healthy young subjects: The "very first night effect"

PSYCHOPHYSIOLOGY, Issue 4 2002
José-Luis Lorenzo
Many studies have been carried out to assess the variability of sleep parameters. The first night effect is one of the most important factors in this variability and has been extensively studied. However, the readaptation phenomenon when subjects returned to the sleep laboratory after spending a certain period of time at home has been not systematically evaluated. To investigate this phenomenon across multiple sleep laboratory sessions, polysomnographic data from 12 healthy young subjects for 12 nights (three periods each of 4 consecutive nights, with a minimum of 1 month between them) were collected. The first night effect was present only in the first night of the first period ("very first night") and was significant only for REM sleep-related variables. We conclude that the results from the first nights of consecutive periods within a specific protocol with healthy young subjects need not be discarded in subsequent analyses. [source]

Severe obstructive sleep apnea: Sleepy versus nonsleepy patients

THE LARYNGOSCOPE, Issue 3 2010
Arie Oksenberg PhD
Abstract Objectives/Hypothesis: To compare demographic and polysomnographic data of sleepy versus nonsleepy severe obstructive sleep apnea (OSA) patients according to the Epworth Sleepiness Scale (ESS). Study Design: Retrospective cohort. Methods: Six hundred forty-four consecutive severe (apnea-hypopnea index [AHI] , 30) adult OSA patients who underwent a polysomnographic evaluation in our sleep disorders unit. ESS data were available in 569 (88.3%). Three hundred twenty-seven (57.5%) patients had ESS > 10. Results: Sleepy severe OSA patients are slightly younger and more obese than nonsleepy patients. These sleepy patients have shorter sleep latency and lower percentage of slow wave sleep. They consistently show a higher AHI, both supine and lateral AHI, have a higher number of short arousals, and a higher arousal index. They also have higher snoring loudness in the supine and both lateral positions and a lower minimal SaO2 in rapid eye movement and non-rapid eye movement sleep. After adjusting for confounders, a logistic regression model points to apnea index as a significant prognostic factor for excessive daytime sleepiness. Conclusions: Severe OSA sleepy patients have a syndrome that is significantly more severe than nonsleepy patients. Sleepy patients have worse sleep-related breathing parameters, and their sleep patterns are lighter and more fragmented than nonsleepy patients. Apnea index appears as an important prognostic factor for excessive daytime sleepiness. Laryngoscope, 2010 [source]