Abstract
The purpose of this study was to examine the relationship between daily activities and sleep durations for patients following elective percutaneous coronary intervention (ePCI) and diagnosed with ischemic heart disease (IHD) after discharge to their homes. The actigraph data were used to collect data from twenty five patients. The duration of night-time sleep (minutes from the start to end of night-time) and actual night-time sleep duration (total sleep duration excluding wake-up durations of night-time) on the seventh day after discharge were divided into three groups; less than 360, 360 to 480, and more than 480 minutes (short, optimal and long respectively). Subsequently, among the three groups of patients, the data were analyzed by Kruskal Wallis H-test with multiple comparison procedures using the Scheffe-test in order to compare differences in daytime activity items at seven days after discharge from the hospital. Total daytime nap duration (p p p p < 0.05). However, the duration of night-time sleep and daytime activity did not significantly differ. If actual night-time sleep duration is improved from 360 to 480 minutes, daytime nap could potentially be decreased. Determining objective sleep conditions for patients and treating sleep disorders may improve overall patient health, facilitating appropriate sleep and wake rhythms.
Highlights
Coronary heart disease (CHD) is one of the leading causes of mortality and morbidity worldwide [1] [2]
The purpose of this study was to examine the relationship between daily activities and sleep durations for patients following elective percutaneous coronary intervention and diagnosed with ischemic heart disease (IHD) after discharge to their homes
Total daytime nap duration (p < 0.05), percent nap duration in day time (p < 0.05), and longest daytime nap duration (p < 0.05) were significantly higher and the daytime activity index which was significantly lower in the group with short night-time sleep durations than those with optimal night-time sleep duration (p < 0.05)
Summary
Coronary heart disease (CHD) is one of the leading causes of mortality and morbidity worldwide [1] [2]. The Ministry of Health, Labour and Welfare Ministry of Japan, has identified cardiac disease as the second leading cause of death in Japan. In 2011, 752,000 adults were diagnosed with ischemic heart disease (IHD) [3]. Drug-eluting stents for CHD have been associated with reduced target vessel revascularization and an increased survival rate [5]. There are several significant factors that have been associated with a decrease in survival rate following ePCI; diets, smoking, physical activities, stress [6] and sleep disorders including obstructive sleep apnea [7] [8]
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