Magnesium and the heart.

Area of Science:

• Biochemistry
• Cardiology
• Clinical Medicine

Background:

• Magnesium is a vital cation, primarily stored in bones, muscles, and the liver.
• Deficiency arises from gastrointestinal disorders, diuretic use, endocrine issues, renal diseases, and alcoholism.
• Hypomagnesemia in digitalis toxicity is clinically significant, as magnesium replacement can mitigate toxicity and mortality.

Purpose of the Study:

• To investigate the myocardial levels of magnesium in cardiovascular diseases.
• To understand the clinical significance of magnesium levels in digitalis toxicity.
• To explore the role of magnesium in cardiac function and arrhythmias.

Main Methods:

• Clinical observation of patients with digitalis toxicity and hypomagnesemia.
• Analysis of serum and tissue magnesium levels.
• Electrocardiogram (ECG) monitoring for cardiac abnormalities.

Main Results:

• Hypomagnesemia is frequently observed in digitalis toxicity.
• ST and T wave changes are common ECG findings in magnesium deficit.
• Cardiac arrhythmias can occur, though less frequently.

Conclusions:

• Magnesium replacement is crucial for patients with digitalis toxicity and hypomagnesemia.
• Magnesium plays a significant role in myocardial function and cardiac electrophysiology.
• Therapeutic magnesium administration is indicated for magnesium deficiency with low serum or tissue levels.