title: [Significance of the statistical characteristics of the sinus rhythm of the heart].
abstract: Statistical analysis of prolonged continuous recordings of the ECG RR intervals was carried out in 64 patients with purulent surgical infection. The following indices were considered: the mean value of the RR intervals, the mean quadratic deviation (delta), the variation amplitude, the 1st and the 3rd correlation coefficients, the excess, asymmetry, the RR/delta ratio. Besides, the size and the shape of the autoregression could was analyzed. Statistically significant differences of the RR/delta ratio, of the mean quadratic deviation, and of the variation amplitude were revealed in 3 groups of patients differing by the severity of condition. These differences were reflected in the size and shape of the autoregression cloud. The results obtained suggest that statistical characteristics of prolonged recordings of the cardiac rhythm could be used for objective assessment of the severity of the patient's condition and of the therapeutic effect in the patients with a purulent surgical infection.
mesh_terms: D004562:Electrocardiography; D005334:Fever; D006339:Heart Rate; D006801:Humans; D012044:Regression Analysis; D018805:Sepsis / Q000175:diagnosis; D013492:Suppuration; D013530:Surgical Wound Infection / Q000175:diagnosis*
vernacular_title: O znachenii statisticheskikh kharakteristik sinusovogo ritma serdtsa.