Abstract

Background Data in the literature has shown poor sleep quality to be frequently observed in hospitalized patients and known to be associated with poor treatment outcome. Many factors may impact poor sleep quality, and there is currently limited available data. We aim to determine the prevalence of poor sleep quality and associated factors in patients admitted to internal medicine wards as well as the change of sleep quality over time after admission. Methods An analytic observational study was conducted at the internal medicine wards at the King Chulalongkorn Memorial Hospital, Bangkok, Thailand. Patients were personally interviewed to evaluate the history of sleep quality at home, sleep quality after the first and the third days of admission, and potential associated factors. The Pittsburgh Sleep Quality Index and screening questionnaires for the common diseases associated with poor sleep quality were also utilized. The logistic regression analysis was used to determine the independent factors which led to poor sleep quality. Results Data were collected from 96 patients during the period of June 2015 to February 2016. The mean age of the patients was 50.8 ± 16.7 years, and 51% were male. Infectious disease was the most common principal diagnosis accounted for 29.2%. The results show high prevalence of poor sleep quality after the first night of admission compared to baseline sleep quality at home (50% vs. 18.8%; p < 0.001). After 3 days of admission, the prevalence of poor sleep quality was reduced to the level close to baseline sleep quality at home (28.1% vs. 18.8%; p = 0.13). Multivariate analysis demonstrated that light exposure and pain were the main independent factors for poor sleep quality on the first day (odds ratio 6.68; 95% CI 2.25-19.84) and on the third day (odds ratio 3.47; 95% CI 1.24-9.71), respectively. Conclusions This is the first study conducted on the sleep quality of hospitalized patients that included the follow-up period during hospital admission. Our study demonstrated high prevalence of poor sleep quality in hospitalized patients on the first day. Interestingly, the sleep quality was partly improved during hospitalization. Light exposure and pain were demonstrated to be the factors associated with poor sleep quality.

Highlights

  • Sleep is one of the basic activities of human daily living, and it affects human health physically and mentally [1]

  • Our secondary objectives were to identify factors that contribute to poor sleep quality during admission including hospital factors, patient factors, and some associated diseases that can potentially lead to poor sleep quality including obstructive sleep apnea (OSA), allergic rhinitis (AR), and gastrointestinal disturbance

  • During the period of June 2015 to February 2016, a total of 96 patients admitted to the internal medicine ward at King Chulalongkorn Memorial Hospital, Bangkok, Thailand, were enrolled in the study. 51%, 44.8%, and 4.2% were admitted to the ordinary ward, special ward, and private ward, respectively

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Summary

Introduction

Sleep is one of the basic activities of human daily living, and it affects human health physically and mentally [1]. Our primary objective was to determine prevalence of poor sleep quality in patients admitted to internal medicine wards and the adaptation of sleep qualities overtime after 3 days of admission. We aim to determine the prevalence of poor sleep quality and associated factors in patients admitted to internal medicine wards as well as the change of sleep quality over time after admission. Patients were personally interviewed to evaluate the history of sleep quality at home, sleep quality after the first and the third days of admission, and potential associated factors. Our study demonstrated high prevalence of poor sleep quality in hospitalized patients on the first day. Light exposure and pain were demonstrated to be the factors associated with poor sleep quality

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