Interrupted sleep by ambulatory blood pressure monitoring does not affect blood pressure

Background For the past 20 years, many hypertension guidelines have strongly recommended the practical use of ambulatory blood pressure monitoring (ABPM) to the diagnosis and management of hypertension. However, whether different sleep conditions during ABPM will affect blood pressure (BP) fluctuations and lead to inaccurate measurement results is a concern of clinicians. Method This was a prospective cohort study in the real-world setting. The participants were recruited between June 2018 and June 2019 in Hebei Province, China. There are three types of sleep during ABPM: undisturbed sleep, disturbed sleep and severely disturbed sleep. The people were divided into three groups according to their sleep types during ABPM. The primary outcome is 24-h mean BP, circadian rhythm of BP and variation coefficient of 24-h BP. Comparisons between groups are tested by Kruskal-Wallis H test. Results In total 1154 people completed the study. There was no significant difference in 24-h mean BP and circadian rhythm of BP among the three groups. There are statistically significant differences among the three groups in the variation coefficient of 24-h BP for the general population and noninsomnia population. There was no significant difference in mean BP, circadian rhythm of BP and variation coefficient of BP among the three groups for the insomnia people. Conclusion Regardless of the insomniac or noninsomniac population, sleep conditions during ABPM do not affect BP value and BP rhythm. For noninsomniac people, the sleep situation during ABPM may affect the BP variation coefficient.