Abstract
The article analyzes the interrelation of the heart rate variability with the daily profile of arterial pressure in patients with arterial hypertension.Objective: to study the relationship between heart variability indices the daily profile of blood pressure in patients with arterial hypertension I-II stage.Material and methods. A survey of 145 patients with stage I and II hypertension, aged 29 to 53 years old (average age - 46.75 ± 0.56 years) was performed. According to a result of 24-hour daily blood pressure monitoring, all patients were divided into 3 groups: 62 patients with normal blood pressure decrease at night (dippers); 67 patients with insufficient decrease in blood pressure at night (non-dipper); 16 patients with excessive nightly decrease in blood pressure (over-dipper).Results: under background conditions patients with an insufficient (non-dipper) or surplus (over-dipper) decline HELL at night were characterized by less general power of spectrum (ТР) and VLF of modulations. In addition, substantial increase of sympatic trend in (non-dipper) and parasympathetic trend in (over-dipper) attracts attention. Thus, LF part of vibrations of LF% in the group of patients of made 35,34±2,25%, and significantly exceeded the value of analogical index in the group of (22,75±1,15%, p <0,01), but the part of HF of vibrations of HF% in the group of patients of over-dipper, having made 32,96±1,18%, significantly exceeded the value for an analogical index in the group of (14,92±0,95%, p <0,01) and (17,43±1,12%,p <0,02). Non-dipper were characterized by the least values of cute modulations and index of sympatho-vagal balance (p <0,01).Conclusion. It has been established that, the inherent vegetative maintenance of cardiac activity was preserved for the patients in the category of dipper and overdipper. At the same time, patients who have a daily profile of overseas dippery type, are characterized by adequate functioning of the sympathetic department of the autonomic nervous system against a background of high activity of the parasympathetic link. Patients who belong to the non-dipper category show a decrease in the adaptive capacity of the sympathetic nervous system against a background of hyperparasympathicotonia in a state of rest and an adequate response to parasympathetic modulation during the loading test.
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