Journal
AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION
Volume 85, Issue 5, Pages 430-435Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.phm.0000214259.06380.79
Keywords
sleep; pain management; chronic low back pain
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Objective: To document the relationship between sleep disturbance and chronic low back pain in patients referred to a physical medicine and rehabilitation clinic. Design: This is a prospective cross-sectional survey of 268 patients 18 yrs or older being evaluated for low back pain of greater than 6 months at a tertiary medical center. The survey consisted of a 43-item composite form that contained the Short-Form McGill Pain Questionnaire (SF-MPQ); the Pittsburgh Sleep Quality Index (PSQI); a pain visual analog scale (VAS); and questions regarding bed type, sleep position, and patients' sleep description. Results: There was a significant relationship between pain and sleep (P < 0.0005) with a 55% increase in the proportion of subjects reporting restless/light sleep after pain onset. There was no corresponding increase in sleep medication use. There was a significant direct correlation between SF-MPQ and PSQI (r = 0.44, P < 0.0005); between PSQI and VAS (r = 0.41, P < 0.0005); and between overall quality of sleep and VAS (r = 0.31, P < 0.0005). Finally, PSQI scores were the worst in subjects sleeping on an orthopedic mattress (P = 0.001). Conclusions: Chronic low back pain significantly affects quality of sleep. Sleep problems should be addressed as an integral part of the pain management plan.
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