Functioning of the Human Heart in the Pron-Position
https://doi.org/10.18087/cardio.2023.1.n2047
Abstract
Aim To study intracardiac hemodynamics in healthy men in supine and prone positions.
Material and methods This echocardiography study included 14 apparently healthy men at a mean age of 38 years.
Results In a prone position, the heart configuration and location in the chest changed, the heart rate increased by 7.3 %, and the transaortic flow velocity decreased by 13.7 %. Also, early and late right ventricular diastolic filling velocities and the pulmonary artery flow velocity were increased by 31.7, 11.4, and 5.6 %, respectively. In the intact tricuspid valve, the velocity and regurgitation pressure gradient were reduced by 7 % and 14.2 %, respectively.
Conclusion In a prone position, spatial changes in the location of the heart and its structures influence velocities of intracardiac blood flow, which may initiate the development of heart failure if the prone position is long-lasting.
Supporting agencies: The study was a part of the project “Mechanisms of formation of electric heterogeneity at different levels of the heart architecture” (project code: FUUU-2022-0068). Project registration number: 1021052404529‑3‑3.1.8. No conflict of interest is reported.
About the Authors
V. P. Nuzhny
http://physiol.komisc.ru
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Competing Interests:
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Doctor of Medical Sciences, Associate Professor, Senior Researcher of the Laboratory of the Heart Physiology of the Institute of Physiology of the Komi Science Centre of theUral Branch of the Russian Academy of Sciences, Federal Research Centre of the Komi Science Center of the Ural Branch of the Russian Academy of Sciences.
Competing Interests:
B. F. Dernowoy
Institute of Physiology of the Komi Scientific Center, Syktyvkar;
Medical and Sanitary Unit of the Ministry of Internal Affairs of Russia in the Republic of Komi, Syktyvkar
Candidate of Medical Sciences, Head of the Functional Diagnostics Office, Doctor of Functional Diagnostics of the Hospital at the Medical and Sanitary Unit of the Ministry of Internal Affairs of Russia in the Komi Republic.
N. A. Kibler
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Candidate of Biological Sciences, Senior Researcher, Researcher of the Laboratory of the Heart of the Institute of Physiology of the Komi Science Centre of theUral Branch of the Russian Academy of Sciences, Federal Research Centre of the Komi Science Center of the Ural Branch of the Russian Academy of Sciences.
V. I. Prosheva
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Doctor of Biological Sciences, Leading Researcher of the Department of Ecological and Medical Physiology of the Institute of Physiology of the Komi Science Centre of theUral Branch of the Russian Academy of Sciences, Federal Research Centre of the Komi Science Center of the Ural Branch of the Russian Academy of Sciences.
D. N. Shmakov
http://physiol.komisc.ru
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Institute of Physiology of the Komi Scientific Center, Syktyvkar
Doctor of Biological Sciences, Professor, Chief Researcher of the Laboratory of the Heart Physiology of the Institute of Physiology of the Komi Science Centre of theUral Branch of the Russian Academy of Sciences, Federal Research Centre of the Komi Science Center of the Ural Branch of the Russian Academy of Sciences.
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Review
For citations:
Nuzhny V.P., Dernowoy B.F., Kibler N.A., Prosheva V.I., Shmakov D.N. Functioning of the Human Heart in the Pron-Position. Kardiologiia. 2023;63(1):42-47. https://doi.org/10.18087/cardio.2023.1.n2047
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