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Updated: Jul 19, 2026
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Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes
Published on: September 18, 2017
Cardiovascular actions of magnesium
1Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children, Boston, Massachusetts, USA.
Critical Care Clinics
|February 24, 2001
Summary
Low magnesium levels (hypomagnesemia) in hospitalized patients can increase heart problems, especially during heart attacks. Maintaining normal plasma magnesium is crucial for preventing dangerous heart rhythms in cardiac patients.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Biochemistry
Background:
- Intracellular magnesium regulates cardiac calcium and potassium channels.
- Hypomagnesemia is prevalent in hospitalized individuals.
- Low magnesium is linked to increased cardiac morbidity and mortality, particularly during myocardial ischemia.
Purpose of the Study:
- To highlight the significance of magnesium in cardiac function.
- To emphasize the risks associated with hypomagnesemia in cardiac patients.
- To advocate for maintaining normal plasma magnesium levels for arrhythmia prevention.
Main Methods:
- Review of existing literature on magnesium's role in cardiac electrophysiology.
- Analysis of clinical data associating hypomagnesemia with cardiac events.
- Discussion of prophylactic strategies for magnesium management.
Main Results:
- Magnesium is a key modulator of ion channels critical for heart rhythm.
- Hypomagnesemia is a significant risk factor for arrhythmias and cardiac mortality.
- Maintaining adequate magnesium levels may prevent adverse cardiac events.
Conclusions:
- Plasma magnesium concentration is vital for cardiac myocyte function.
- Prophylactic maintenance of normal magnesium levels is recommended for patients with or at risk of cardiac disease.
- Monitoring and correcting hypomagnesemia can mitigate cardiac risks.
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