CELLULAR-LEVEL EFFECTS OF MYOCARDIAL HYPOXIA
Keywords:
myocardial hypoxia, cardiomyocytes, cellular metabolism, ATP deficiency, mitochondria, oxidative stress, free radicals, apoptosis, necrosis, pediatrics.Abstract
Myocardial hypoxia is a significant pathophysiological condition that develops as a result of insufficient oxygen supply to cardiac muscle cells and represents a particularly relevant problem in pediatric practice. Due to the incomplete development of the cardiovascular system in children, sensitivity to hypoxic conditions is increased, which may lead to serious disturbances in cardiac function. Myocardial hypoxia is associated with impaired energy metabolism in cardiomyocytes, decreased synthesis of adenosine triphosphate (ATP), mitochondrial dysfunction, and disruption of the intracellular environment. These processes contribute to the intensification of oxidative stress, increased production of free radicals, and subsequent damage to cell membranes and organelles. Prolonged hypoxia activates apoptotic and necrotic pathways, resulting in structural and functional alterations of myocardial tissue. This article comprehensively discusses the main pathophysiological mechanisms of myocardial hypoxia at the cellular level, as well as their clinical significance in pediatric patients and their adverse effects on cardiac function.
Downloads
References
Braunwald, E. (2019). Braunwald’s Heart Disease: A Textbook of Cardiovascular Medicine (11th ed., pp. 1083–1102). Philadelphia: Elsevier.
Lilly, L. S. (2016). Pathophysiology of Heart Disease (6th ed., pp. 92–115). Philadelphia: Wolters Kluwer.
Kumar, V., Abbas, A. K., & Aster, J. C. (2020). Robbins and Cotran Pathologic Basis of Disease (10th ed., pp. 543–556). Philadelphia: Elsevier.
Guyton, A. C., & Hall, J. E. (2021). Textbook of Medical Physiology (14th ed., pp. 245–260). Philadelphia: Elsevier.
Park, M. K. (2020). Pediatric Cardiology for Practitioners (7th ed., pp. 167–189). Philadelphia: Elsevier.
Kloner, R. A., & Jennings, R. B. (2001). Consequences of brief ischemia: Stunning, preconditioning, and their clinical implications. Circulation, 104(24), 2981–2989.
Downloads
Published
How to Cite
Issue
Section
License

This work is licensed under a Creative Commons Attribution 4.0 International License.
All content published in the Journal of Applied Science and Social Science (JASSS) is protected by copyright. Authors retain the copyright to their work, and grant JASSS the right to publish the work under a Creative Commons Attribution License (CC BY). This license allows others to distribute, remix, adapt, and build upon the work, even commercially, as long as they credit the author(s) for the original creation.