Abstract

Introduction. Assessing the impact of external respiration upon haemodynamics help, firstly, to estimate the functional state of cardio-vascular system and, secondly, to find the most efficient control regimes of this state using the regulation of respiration movements. Purpose. To analyze scientific literature concerning the influence of external respiration upon wave processes in haemodynamics. Methods. The analysis of scientific literature. Results. The investigation of changes in heart rhythm variability and blood stroke volume at verbalization, regulated breathing, and resistance to respiration movements is analyzed. The signs and mechanisms of respiratory sinus arrhythmia are characterized. The changes in the wave structure of haemodynamic indicators in persons with different respiration typology are described. Originality. It is found that there are no uniform value standards of hemodynamic changes under the influence of respiratory movements. There are few publications considering the oscillation of blood stroke volume in healthy people and cross-spectral analysis of this indicator with the changes of R-R interval duration. Some aspects of respiration sinus arrhythmia, particularly, with regulated respiration have not been studied yet. Conclusion. The literature analysis shows the necessity of further investigation of both methodical and theoretical aspects of respiration influence upon the wave indicators of haemodynamics.

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