The association between daytime sleepiness and sleep-disordered breathing in NREM and REM sleep. 2002

Naresh M Punjabi, and Karen Bandeen-Roche, and Jason J Marx, and David N Neubauer, and Philip L Smith, and Alan R Schwartz
naresh@jhmi.edu

BACKGROUND Daytime sleepiness is common in patients with sleep-disordered breathing. Although respiratory events during sleep are associated with the occurrence of daytime sleepiness, the differential impact of these events during non-rapid eye movement (NREM) and rapid eye movement (REM) sleep on daytime sleepiness has not been well characterized. OBJECTIVE To determine the effect of respiratory events during REM sleep and NREM sleep on daytime sleepiness, as assessed by the multiple sleep latency test (MSLT). METHODS Cross-sectional study. METHODS University-based sleep disorders laboratory. METHODS Patients referred for polysomnography and daytime MSLT (n=1,821). METHODS N/A. RESULTS The study sample was initially divided into quartiles based on the level of the apnea-hypopnea index (AHI) during NREM sleep. Within the first NREM-AHI quartile (NREM-AHI < 8.3 events/hr), the association between REM-related respiratory events and daytime sleepiness was examined using the method of Kaplan-Meier analysis and Cox proportional hazards regression. After adjusting for age, gender, body mass index, and the duration of NREM and REM sleep, REM-AHI was not associated with daytime sleepiness (Relative Risk: 1.01; 95%CI: 0.94-1.10). Similarly, no significant association was observed between REM-AHI and the MSLT in patients within the second through fourth NREM-AHI quartiles. In contrast, increasing severity of disordered breathing during NREM sleep was associated with daytime sleepiness. For a 10-point increase in NREM-AHI, the adjusted relative risks for daytime sleepiness in the second through fourth NREM-AHI quartile were 1.21 (95%CI: 1.01-1.46), 1.20 (95%CI: 1.05-1.37), and 1.10 (95%CI: 1.04-1.16), respectively. CONCLUSIONS Sleep-disordered breathing during NREM sleep, but not REM sleep, is associated with increased risk of daytime sleepiness.

UI MeSH Term Description Entries
D006970 Disorders of Excessive Somnolence Disorders characterized by hypersomnolence during normal waking hours that may impair cognitive functioning. Subtypes include primary hypersomnia disorders (e.g., IDIOPATHIC HYPERSOMNOLENCE; NARCOLEPSY; and KLEINE-LEVIN SYNDROME) and secondary hypersomnia disorders where excessive somnolence can be attributed to a known cause (e.g., drug affect, MENTAL DISORDERS, and SLEEP APNEA SYNDROME). (From J Neurol Sci 1998 Jan 8;153(2):192-202; Thorpy, Principles and Practice of Sleep Medicine, 2nd ed, p320) Daytime Sleepiness,Daytime Somnolence,Excessive Daytime Sleepiness,Hypersomnia,Hypersomnolence,Primary Hypersomnia Disorders,Secondary Hypersomnia Disorders,DOES (Disorders of Excessive Somnolence),Excessive Somnolence Disorders,Hypersomnia, Recurrent,Hypersomnolence Disorders,Hypersomnolence Disorders, Primary,Hypersomnolence Disorders, Secondary,Primary Hypersomnolence Disorders,Secondary Hypersomnolence Disorders,DOESs (Disorders of Excessive Somnolence),Daytime Sleepiness, Excessive,Daytime Sleepinesses,Daytime Somnolences,Excessive Daytime Sleepinesses,Excessive Somnolence Disorder,Hypersomnia Disorder, Primary,Hypersomnia Disorder, Secondary,Hypersomnias,Hypersomnolence Disorder,Hypersomnolence Disorder, Primary,Hypersomnolence Disorder, Secondary,Primary Hypersomnia Disorder,Primary Hypersomnolence Disorder,Recurrent Hypersomnia,Recurrent Hypersomnias,Secondary Hypersomnia Disorder,Secondary Hypersomnolence Disorder,Sleepiness, Daytime,Sleepiness, Excessive Daytime,Somnolence Disorder, Excessive,Somnolence, Daytime
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002940 Circadian Rhythm The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs or environmental and physiological stimuli. Diurnal Rhythm,Nyctohemeral Rhythm,Twenty-Four Hour Rhythm,Nycthemeral Rhythm,Circadian Rhythms,Diurnal Rhythms,Nycthemeral Rhythms,Nyctohemeral Rhythms,Rhythm, Circadian,Rhythm, Diurnal,Rhythm, Nycthemeral,Rhythm, Nyctohemeral,Rhythm, Twenty-Four Hour,Rhythms, Circadian,Rhythms, Diurnal,Rhythms, Nycthemeral,Rhythms, Nyctohemeral,Rhythms, Twenty-Four Hour,Twenty Four Hour Rhythm,Twenty-Four Hour Rhythms
D003430 Cross-Sectional Studies Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time. Disease Frequency Surveys,Prevalence Studies,Analysis, Cross-Sectional,Cross Sectional Analysis,Cross-Sectional Survey,Surveys, Disease Frequency,Analyses, Cross Sectional,Analyses, Cross-Sectional,Analysis, Cross Sectional,Cross Sectional Analyses,Cross Sectional Studies,Cross Sectional Survey,Cross-Sectional Analyses,Cross-Sectional Analysis,Cross-Sectional Study,Cross-Sectional Surveys,Disease Frequency Survey,Prevalence Study,Studies, Cross-Sectional,Studies, Prevalence,Study, Cross-Sectional,Study, Prevalence,Survey, Cross-Sectional,Survey, Disease Frequency,Surveys, Cross-Sectional
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012891 Sleep Apnea Syndromes Disorders characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep. Sleep apnea syndromes are divided into central (see SLEEP APNEA, CENTRAL), obstructive (see SLEEP APNEA, OBSTRUCTIVE), and mixed central-obstructive types. Apnea, Sleep,Hypersomnia with Periodic Respiration,Sleep-Disordered Breathing,Mixed Central and Obstructive Sleep Apnea,Sleep Apnea, Mixed,Sleep Apnea, Mixed Central and Obstructive,Sleep Hypopnea,Apnea Syndrome, Sleep,Apnea Syndromes, Sleep,Apneas, Sleep,Breathing, Sleep-Disordered,Hypopnea, Sleep,Hypopneas, Sleep,Mixed Sleep Apnea,Mixed Sleep Apneas,Sleep Apnea,Sleep Apnea Syndrome,Sleep Apneas,Sleep Apneas, Mixed,Sleep Disordered Breathing,Sleep Hypopneas
D012895 Sleep, REM A stage of sleep characterized by rapid movements of the eye and low voltage fast pattern EEG. It is usually associated with dreaming. Fast-Wave Sleep,Paradoxical Sleep,Rapid Eye Movements,Rhombencephalic Sleep,Sleep, Fast-Wave,REM Sleep,Eye Movement, Rapid,Eye Movements, Rapid,Fast Wave Sleep,Movement, Rapid Eye,Movements, Rapid Eye,Rapid Eye Movement,Sleep, Fast Wave,Sleep, Paradoxical,Sleep, Rhombencephalic

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