CHANGES IN CARDIORESPIRATORY INDICES DURING REHABILITATION OF PATIENTS WITH POST-COVID STATES

Objective: The main purpose of the research was to prove the expediency of a cardiorespiratory index, developed by us earlier, as an objective criterion for evaluating the effectiveness of postCOVID statuses curation. Methods: It was conducted on 219 patients admitted to medical rehabilitation with post-COVIDassociated conditions of various origins. The strength and frequency parameters of activity of the cardiorespiratory functional system were recorded at the time of patients’ admission to the hospital and their discharge. Changes in the cardiorespiratory index were compared with changes in the discrete parameters of its components, as well as with the Hildebrant coefficient shift. Results: Under the given conditions of the rehabilitation process, the cardiorespiratory index changed from 0.21±0.07 (upon admission) to 0.39±0.07 (upon discharge; which approached its normal value of 0.39-0.5). The shifts of general clinical parameters of the cardiovascular and respiratory systems which were fixed in their traditional discrete assessment was mostly statistically unreliable. The Hildebrant index also remained virtually unaltered (from 5.29±1.97 to 5.34±1.41). Conclusions: Our research confirms that the cardiorespiratory index proposed by us reliably reflects the positive dynamics of rehabilitation procedures’ effectiveness in patients who have recovered from COVID-19. It is logical to assume that this indicator (coefficient) will be of interest not only in post-COVID-associated status, but also in other nosologic areas. Key words: cardiorespiratory system, COVID-19, cardiorespiratory index, Hildebrandt coefficient.

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