NDT Advance Access originally published online on May 25, 2004
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Nephrol Dial Transplant (2004) 19: 1815-1822
Nephrol Dial Transplant Vol. 19 No. 7 © ERA-EDTA 2004; all rights reserved
Original Article
Sleep disorders and illness intrusiveness in patients on chronic dialysis
1 Psychonephrology Study Group, Institute of Behavioral Sciences and 2 1st Department of Internal Medicine, Semmelweis University Budapest, 4 2nd Department of Internal Medicine, St Margaret Hospital, 5 Nephrocentrum Foundation and 6 Quintiles Hungary Ltd, Budapest, Hungary, 3 Department of Medicine, Faculty of Medicine and 7 Sleep Research Laboratory, Department of Psychiatry, University Health Network, University of Toronto, Canada
Correspondence and offprint requests to: Dr Istvan Mucsi, 21 Mayfair Avenue, Apt. 414, Toronto, ON M5N 2N5 Canada. Email: mucsist{at}net.sote.hu
Background. The prevalence of sleep problems (insomnia, restless legs syndrome, periodic limb movements in sleep and sleep apnoea) has been shown to be high in patients with end-stage renal disease (ESRD) and might contribute to impaired quality of life in this population.
Methods. In a cross-sectional study using self-administered questionnaires, we examined the prevalence of sleep disorders and assessed their effect on different aspects of health-related quality of life in a sample of Hungarian patients on maintenance dialysis.
Results. Our data confirm that sleep problems are frequent in patients with ESRD; 65% of the patients reported symptoms of at least one specific sleep disorder; insomnia was the most common sleep complaint with 49%, the prevalence of sleep apnoea was 32% and the prevalence of restless legs syndrome was 15%. Co-morbidity, assessed by the End-Stage Renal Disease Severity Index, was shown to be an independent predictor of sleep disorders. Patients with sleep disorders reported higher illness intrusiveness and worse self-perceived health than those without sleep problems. The presence of sleep disorders was an independent predictor of illness intrusiveness, an important determinant of health-related quality of life.
Conclusion. Sleep disorders are important determinants of illness intrusiveness and health-related quality of life in patients with ESRD. Sleep problems may be treated successfully; therefore, more attention should be paid to assessing these problems in this patient population.
Keywords: illness intrusiveness; insomnia; restless legs syndrome; self-perceived health; sleep apnoea; sleep disorders
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