alexa Prevalence of concomitant sleep disorders in patients with obstructive sleep apnea.
Neurology

Neurology

Journal of Sleep Disorders & Therapy

Author(s): Scharf SM, Tubman A, Smale P

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Abstract We determined the prevalence of concomitant sleep disorders in patients with a primary diagnosis of obstructive sleep apnea (OSA). We retrospectively analyzed 643 patients, aged > or =18, with a primary diagnosis of OSA, evaluated by sleep specialists, in whom clinical and polysomnographic data were derived using standardized techniques by reviewing data from a standardized database and clinical charts. Concomitant sleep disorders were listed according to the International Classification of Sleep Disorders (American Academy of Sleep Medicine, 2000). The mean age was 48.5+/-13.5 years and 55\% were male. Racial distributions were African-Americans 51.8\% and Caucasian 47\%. Indices of disordered breathing were respiratory disturbance index 32.4+/-30.4/h sleep and time <90\% O(2) saturation 44.5+/-81.6 min. Thirty-one percent of patients had a concomitant sleep disorder. The most common were inadequate sleep hygiene (14.5\%) and periodic limb movement disorder (PLMD, 8.1\%). Of patients with other sleep disorders, 66.8\% had treatment initiated for these disorders. Predictors of inadequate sleep hygiene (logistic regression) were: age (each decade OR=0.678, P=0.000000), gender (for M, OR=0.536), and the presence of at least one other major system disorder (OR=2.123, P=0.0015). Predictors of PLMD were: age (each decade OR=0.794, P=0.0005), gender (for M, OR=0.433, P=0.004), and total sleep time (for each 10 min, OR=0.972, P=0.0013). We conclude that approximately one third of patients with sleep apnea have another identifiable sleep disorder, usually requiring treatment. This suggests that practitioners evaluating and treating sleep apnea ought to be prepared to deal with other sleep disorders as well. This article was published in Sleep Breath and referenced in Journal of Sleep Disorders & Therapy

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