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№2' 2013

CARDIOLOGY

International Medical Journal, Vol. 19., Iss. 2, 2013, P. 29−34.

SIGHT FOR HEART RATE: RELEVANCE OF THE STUDY, PHYSIOLOGICAL REGULATION AND REGISTRATION METHODS OF HEART CHRONOTROPIC FUNCTION REGISTRATION

Penza State University, Russia

Abstract. Currently, there is strong clinical evidence about the relationship of high heart rate and cardiovascular morbidity and mortality. Numerous studies emphasize the negative outlook of tachycardia not only in patient with cardiovascular diseases, but also in the general population. Physiological regulation of heart rate is implemented at several levels, i.e. neurogenic, autonomous, metabolic, humoral, and depends on a number of exogenous factors. For a long time the most affordable way to estimate the frequency of the rhythm was to determine the resting heart rate. The modern methods of heart rate analysis include methods of load testing, determination of the heart rate, electrophysiological estimation of the sinus nod function, assessment of heart rate during Holter ECG with the study of heart rate variability. Continuous registration of rhythm with the statistical analysis provides a fundamentally new information on the chronotropic heart function, which may have important clinical and prognostic significance.

Key words: heart rate, prognostic factor, regulation of heart rate, methods for assessing heart rate.