The relationship between elevated magnesium levels and coronary artery ectasia

Area of Science:

• Cardiology
• Vascular Biology
• Biochemistry

Background:

• Coronary artery ectasia (CAE) involves localized or diffuse swelling of epicardial coronary arteries.
• Magnesium (Mg) is crucial for cardiac excitability, vascular tone, and vasodilation.

Purpose of the Study:

• To investigate the potential vasodilatory role of magnesium in the development of coronary artery ectasia.
• To compare serum magnesium levels in patients with isolated CAE, normal coronary arteries, severe coronary artery disease, and combined CAD with CAE.

Main Methods:

• Retrospective analysis of 62 patients with isolated CAE, 57 with normal coronary arteries (NCA), 73 with severe coronary artery disease (CAD), and 95 with CAD + CAE.
• Serum magnesium levels were measured after a 12-hour fast.

Main Results:

• No significant differences in demographic factors or common cardiovascular risk factors were observed between groups.
• Serum magnesium levels were statistically higher in patients with isolated CAE (1.90 ± 0.19 mg/dl) and those with CAE + CAD (1.83 ± 0.20 mg/dl) compared to NCA (1.80 ± 0.16 mg/dl) and CAD (1.75 ± 0.19 mg/dl) groups.
• Serum glucose, lipids, TSH, urea, and electrolytes were similar across all study groups.

Conclusions:

• Serum magnesium levels are elevated in patients with coronary artery ectasia, irrespective of the presence of coronary artery disease.
• While magnesium's vasodilatory properties are known, its specific role in the abnormal luminal dilatation of CAE requires further elucidation.
• Histopathological findings in CAE patients were comparable to those with CAD.