Peculiarities of the heart rate variability at patients with acute disorder of cerebral circulation depending on localisation of ischemic damage

Features of the heart rate variability at patients with acute disorder of cerebral circulation depending on localisation of ischemic damage and type of hemodynamics were studied in acute period of disease and in a condition of relative functional rest. Surveyed men and women (30–55 years old) were divided into 3 groups: patients with ischemic damage to the area of the left average brain artery, right average brain artery and with ischemia in vertebro-basilar department. According to indicators of the integral rheography of the body which was carried out in the acute period of a disease, patients of each group were divided into subgroups depending on hemodynamics type – with hyper dynamic, hypo dynamic and normo dynamic type of blood circulation. It was revealed that the highest activity of sympathetic link of regulation and also higher values of the index of tension and the index of vegetative balance characterized patients with ischemia in the area of right average brain artery and hyper dynamic type of blood circulation. The indicator of activity of regulatory systems characterized “overstrain of regulatory mechanisms” and also “exhaustion of mechanisms of regulation” at patients of this group in the acute period. However upon repeated examination 7 days later revealed the significant reduction of the values of the indicator of activity of regulatory systems. Similar indicators of the heart rate variability were found at patients with ischemic damage in the area of right average brain artery and normo dynamic type of blood circulation. Thus, it was detected that the greatest disorders of regulation of the cardiovascular system were characteristic of patients with ischemia in the area of right average brain artery both hyper dynamic and normo dynamic blood circulation types. Activation of parasympathetic and suppression of sympathetic link of regulation were noted in all patients on the seventh day of hospital stay regardless of localisation of ischemic damage and type of hemodynamics.