Hypomagnesemia in critically ill medical patients

Area of Science:

• Critical Care Medicine
• Electrolyte Balance
• Internal Medicine

Background:

• Hypomagnesemia is an underdiagnosed electrolyte disorder in critically ill patients.
• Previous studies focused on specific ICU populations; this study examines patients in a general medical acute care unit.
• Understanding prevalence and outcomes of hypomagnesemia is vital for critical care.

Purpose of the Study:

• To determine serum magnesium levels in critically ill patients.
• To correlate magnesium levels with outcomes like mortality, length of stay, and need for ventilatory support.
• To identify associated medical conditions and predisposing factors for hypomagnesemia.

Main Methods:

• Retrospective analysis of patients admitted to a medical intensive care unit (MICU).
• Measurement of serum magnesium levels upon MICU admission.
• Correlation of magnesium levels with clinical outcomes and laboratory parameters.

Main Results:

• 52% of patients presented with hypomagnesemia upon MICU admission.
• Hypomagnesemia was associated with higher mortality (57.7% vs. 31.7%) and increased need for mechanical ventilation (73% vs. 53%).
• Hypomagnesemia frequently co-occurred with sepsis, hypocalcemia, and hypoalbuminemia, and was more prevalent in diabetic patients.

Conclusions:

• Hypomagnesemia is highly prevalent in critically ill patients and associated with adverse outcomes.
• Patients with hypomagnesemia experienced higher mortality and prolonged need for ventilatory support.
• Sepsis, diabetes mellitus, hypocalcemia, and hypoalbuminemia are commonly associated with hypomagnesemia in this population.