Predictors of the development of abnormal patterns of circadian blood pressure rhythm in patients with hypertension after a new coronavirus infection

Objective. To determine the predictors of the development of abnormal patterns of circadian blood pressure (BP) rhythm in patients with arterial hypertension (AH) after a new coronavirus infection (NСVI). Materials and methods. The study is a comparative clinical research of the same patients with hypertension before and after NCVI with retrospective evaluation of the data. Within 2 years from 842 patients with cardiovascular risk factors, according to the inclusion and non-inclusion criteria 70 patients with target levels of office BP, home monitoring and 24-hour blood pressure monitoring (ABPM) on the background of a continuous antihypertensive therapy were included in the study. Abnormal patterns of circadian BP were recorded after NCVI during ABPM in all of them. All patients with hypertension underwent a complete examination before and after NCVI. Results. After NCVI in patients with AH who had achieved the target ranges of office BP before its development, at home measurement and ABPM against the background of continuous antihypertensive therapy with high adherence to treatment, in more than 50 % of patients BP readings were not in the target values, in more than 50 % of the examined patients, BP variability was higher than the permissible values, in 73 % of patients the average daily BP was above 53 mm Hg. Abnormal patterns of circadian BP rhythm in patients with hypertension after NCVI were detected in 61.5 %: "Non-dipper" in 28.6 %; "Night-dipper" – in 21.9 %, masked nocturnal hypertension – in 17.1 %. Conclusion. The indicative significance of the development of abnormal patterns of circadian BP rhythm in patients with hypertension after NCVI was demonstrated by 3 qualitative indicators: glomerular filtration rate with cystatin C 60 ml/min/1.73 m2, cardio-ankle vascular index (CAVI) ≥ 9, and a high frequency of AGT gene polymorphism – T/T genotype (in 54.3 % of patients).