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Tuberculosis & Respiratory Diseases

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Vol.60 No.1
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Analysis of Sleep Questionnaires of Patients who Performed Overnight Polysomnography at the University Hospital

Tuberculosis & Respiratory Diseases / Tuberculosis & Respiratory Diseases,
2006, v.60 no.1, pp.76-82









& (2006). Analysis of Sleep Questionnaires of Patients who Performed Overnight Polysomnography at the University Hospital. Tuberculosis & Respiratory Diseases, 60(1), 76-82.
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Abstract

Background : The objective of this study was to understand sleep-related problems, and to determine whether the sleep questionnaires is a clinically useful method in patients who need polysomnography.Methods : Subjects were patients who performed polysomnography and who asked to answer a sleep questionnaires at the Sleep Disorders Clinic of St. Paul’s Hospital, Catholic University of Korea. Baseline characteristics, past medical illness, behaviors during sleep-wake cycle, snoring, sleep-disordered breathing and symptoms of daytime sleepiness were analyzed to compare with data of polysomnography.Results : The study population included 1081 patients(849 men, 232 female), and their mean age was 44.2±12.8 years. Among these patients, 38.9% had an apnea-hypopnea index(AHI)<5, 27.9% had 5≤AHI<20, 13.2% had 20≤AHI<40, and 20.0% had 40≤AHI. The main problems for visiting our clinic were snoring(91.7%), sleep apnea(74.5%), excessive daytime sleepiness(8.0%), insomnia(4.3%), bruxism(1.1%) and attention deficit(0.5%). The mean value of frequency of interruptions of sleep was 1.6 and the most common reason was urination(46.3%). Epworth Sleepiness Scale(ESS) had a weak correlation with AHI(r=0.209, p<0.01). When we performed analysis of sleep questionnaires, there were significant differences in the mean values of AHI according to the severity of symptoms including snoring, daytime sleepiness, taking a nap and arousal state after wake(p<0.05).Conclusion : On the basis of statistical analysis of sleep questionnaires, the severity of subjective symptoms such as ESS, snoring, daytime sleepiness and arousal state after wake correlated with the AHI significantly. Therefore the sleep questionnaires can be useful instruments for prediction of the severity of sleep disorder, especially sleep-disordered breathing.(Tuberc Respir Dis 2006; 60: 76-82)

keywords
Sleep questionnaires, Polysomnography, Obstructive sleep apnea

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