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Ischemic heart disease and magnesium
1State University of New York, Health Science Center, Brooklyn.
Insights
Ischemic heart disease (IHD) is a leading global killer due to insufficient blood flow. This review explores IHD causes, focusing on magnesium
Area of Science:
- Cardiology
- Biochemistry
Background:
- Ischemic heart disease (IHD) is a primary cause of mortality worldwide, accounting for 35% of annual deaths in industrialized nations.
- IHD stems from inadequate myocardial oxygen supply due to reduced coronary blood flow.
- This condition encompasses various forms, including angina pectoris, variant angina, and sudden death from ischemia.
Purpose of the Study:
- To review the diverse etiologies of Ischemic Heart Disease (IHD).
- To examine the role of electrolyte imbalances, particularly magnesium (Mg), in IHD pathogenesis.
- To highlight Mg's influence on vascular tone, coronary blood flow, and clinical management of IHD.
Main Methods:
- Literature review focusing on the etiology and pathophysiology of IHD.
- Examination of evidence linking electrolyte alterations (Mg2+-K+, Mg2+-Ca2+) to IHD.
- Analysis of Mg's role in vascular regulation and myocardial oxygen supply/demand dynamics.
Main Results:
- Atherosclerotic obstruction and coronary vasospasm are key etiologic factors in IHD.
- Alterations in Mg2+-K+ and Mg2+-Ca2+ ratios are implicated in IHD development.
- Magnesium plays a crucial role in maintaining vascular tone and regulating coronary blood flow.
Conclusions:
- Judicious administration of magnesium salts may favorably impact the myocardial oxygen supply/demand ratio in IHD patients.
- Mg supplementation holds potential for reducing myocardial oxygen demand.
- Understanding electrolyte roles, especially magnesium, is vital for effective IHD management.
Abstract:
Globally, among mortality and morbidity indices for man, ischemic heart disease (IHD) ranks at the top of the list. In the industrialized world, IHD is the leading killer and accounts for approximately 35% of all deaths each year. This most common cause of death results from insufficient coronary blood flow. IHD is a general term used to describe a pathophysiologic state in which cardiac output is inadequate as a consequence of coronary blood flow deficits brought about when the latter cannot deliver enough O2 to meet the needs of the myocardium. This review is concerned with the etiology of IHD, special forms of IHD such as angina pectoris and variant angina, as well as sudden death ischemia heart disease. The diverse conditions that cause IHD are discussed. Important etiologic factors such as the pathogenesis of atherosclerotic obstruction as well as localized coronary vasospasm are reviewed. Implications of dietary and metabolic alterations in electrolytes are a special focus of this view. Evidence implicating Mg2+-K+ and Mg2+-Ca2+ alterations in the pathogenesis of IHD is reviewed. Special attention is devoted to the role of Mg in vascular tone, coronary blood flow and in clinical management of IHD. It is concluded that judicious use of Mg salts in IHD could be expected to reduce myocardial oxygen demand and influence the myocardial oxygen supply/demand ratio in a favorable manner.