18 October 2019 : Clinical Research
Correlations of Circadian Rhythm Disorder of Blood Pressure with Arrhythmia and Target Organ Damage in Hypertensive PatientsLixiong Zeng1ACDE, Zhihui Zhang1ABEG*, Xiaoyan Wang1ABF, Shan Tu1BCE, Fei Ye1CDF
Med Sci Monit 2019; 25:7808-7812
BACKGROUND: The aim of this study was to investigate the correlations of circadian rhythm disorder of blood pressure with arrhythmia and target organ damage in hypertensive patients.
MATERIAL AND METHODS: A total of 198 patients admitted and treated in our hospital from May 2018 to April 2019 were selected to receive 24-h ambulatory blood pressure monitoring. The nighttime blood pressure decrease rate is 0–10% in people with normal circadian rhythm of blood pressure. In the present study, we divided patients into a normal circadian rhythm group (normal circadian rhythm of blood pressure, n=132) and a circadian rhythm disorder group (circadian rhythm disorder of blood pressure, n=66) according to the circadian rhythm of blood pressure. The systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean pulse pressure (PP) were observed, and dynamic electrocardiography was performed to observe the status of arrhythmia. Finally, the degree of damage to target organs such as heart, brain, and kidney was compared.
RESULTS: The circadian rhythm disorder group had remarkably higher daytime SBP (d-SBP), daytime DBP (d-DBP), and daytime PP (d-PP) but clearly lower nighttime SBP (n-SBP), nighttime DBP (n-DBP), and nighttime PP (n-PP) than in the normal circadian rhythm group (P<0.0001). The detection rate of arrhythmia and the degree of target organ damage were clearly higher in the circadian rhythm disorder group compared with the normal circadian rhythm group (P<0.0001). Moreover, the incidence rates of heart disease, cerebrovascular disease, and nephropathy were higher in the circadian rhythm disorder group than in the normal circadian rhythm group (P<0.0001).
CONCLUSIONS: The circadian rhythm disorder of blood pressure in hypertensive patients probably increases the risk of arrhythmia and worsens the target organ damage, so attention should be paid to the adjustment of disordered blood pressure rhythm in hypertensive patients in clinical practice.
Keywords: Arrhythmias, Cardiac, Blood Pressure, Circadian Rhythm, Hypertension, Aged, Blood Pressure Monitoring, Ambulatory, Chronobiology Disorders, Heart Rate, Middle Aged, Risk Factors
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