Healthy sleep reduced the risk of recurrent cardiovascular events » Medvestnik


Good sleep patterns reduce the risk of recurrent cardiovascular events among patients with coronary artery disease. Sleeping for 7-8 hours without episodes of insomnia and daytime sleepiness with an early chronotype reduced the likelihood of developing heart failure and stroke.

Scientists from Huazhong University of Science and Technology studied the effect of sleep patterns on the incidence of recurrent cardiovascular events in patients suffering from coronary heart disease. The study results were published in the European Heart Journal.

Researchers found a direct relationship between sleep quality and a significant reduction in the risk of cardiovascular events. Thus, daily sleep for 7-8 hours reduced the likelihood of recurrent cardiovascular events by 9%, the risk of heart failure by 12%, and stroke by 18%. Lack of insomnia reduced the likelihood of heart failure by 13%. Almost complete absence of daytime sleepiness reduced the risk of recurrent cardiovascular events by 14% and heart failure by 22%.

When sleep quality was rated 4, the rate of any recurrent cardiovascular event was reduced by 14%, the risk of heart failure was reduced by 29%, and the risk of recurrent stroke was reduced by 28%.

Moreover, the effect of sleep did not depend on gender, age, smoking, alcohol consumption, diet quality, physical activity, body mass index, cholesterol level and medication use.




Data from 21,193 patients with coronary heart disease from the UK Biobank database for 2006–2010 were analyzed. The age of the participants ranged from 40 to 69 years. Sleep quality was rated on a scale of 0 to 4 based on chronotype, sleep duration, frequency of insomnia, and excessive daytime sleepiness, with a score of 4 representing the best quality.

During the study period, 3,771 patients experienced a recurrent cardiovascular event, including 1,634 cases of heart failure and 704 strokes.



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