Abstract
Hypomagnesemia, defined as magnesium (Mg) levels below 1.5mg/dL, is an underdiagnosed electrolyte disorder in patients with heart failure (HF), which is associated with the appearance of ventricular arrhythmias and the development of HF, while its relationship with mortality is more controversial. Its occurrence is related to the use of some drugs, such as proton pump inhibitors, diuretics, or potassium binders, as well as to other situations such as alcoholism, malabsorptive disorders or malnutrition. The detection of hypomagnesemia in patients with HF requires periodic monitoring of Mg along with renal function and the remaining ions, in order to assess its severity and consider its correction by oral supplementation and, less frequently, intravenous. This review addresses some of the main pathophysiological, diagnostic and treatment aspects of hypomagnesemia in HF patients.
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