[The specific features of circadian blood pressure variations in patients with hypertensive disease in different types of weather].
The specific features of circadian blood pressure (BP) variations were studied in 162 patients aged 20 to 60 years who had hypertensive disease (HD) in the warm period of a year in different types of weather. In accordance with the type of weather in which daily BP monitoring (DBPM) was performed, the examinees were divided into 2 groups: 1) those examined in droughty (anticyclonic) weather; 2) those examined in moist (cyclonic) weather, The groups were matched by the number (81) of patients, age, gender, duration of the disease, and office BP values. The mean BP during a day, daylight and night hours, the maximum and minimum BP during wake and sleep was significantly high in moist weather. Examining the magnitude of a nocturnal BP decrease indicated that in Group 1, its adequate decrease (the dipper daily curve) was recorded in 72.3% of the patients; inadequate BP decrease (the non-dipper daily curve) was in 24.2%; paradoxical nocturnal hypertension (night peaker) was seen in 1.8%. In Group 2, adequate and inadequate nocturnal BP decreases were observed in 44.4 and 41.3%, respectively; paradoxical nocturnal hypertension was in 7.7%. Statistical processing confirmed the validity of the findings. Moist (cyclonic) weather was ascertained to be marked by the changes in adequate circadian BP variations: a significant mean daily, maximum, and minimum systolic BP (SBP) and diastolic BP (DBP), as well as by the inadequate nocturnal lowering of SBP and DBP, which determines a poor prognosis and may serve as a basis for preventing HD complications in this period of a year.
Kulakov
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IuV
Nasonova
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D000328:Adult; D001794:Blood Pressure; D015924:Blood Pressure Monitors; D002940:Circadian Rhythm; D003627:Data Interpretation, Statistical; D003971:Diastole / Q000502:physiology; D005260:Female; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013599:Systole / Q000502:physiology; D014887:Weather