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Hypomagnesaemia.

C Arvind¹, N C Talwalkar

¹Department of Nephrology, The Bangalore Hospital.

Journal of the Indian Medical Association

|March 22, 2001

Summary

Hypomagnesemia should be considered in electrolyte disturbances, even with normal serum magnesium, as magnesium is mainly intracellular. This write-up discusses two cases where hypomagnesemia contributed to electrolyte imbalances.

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Area of Science:

Internal Medicine
Clinical Chemistry
Endocrinology

Background:

Electrolyte abnormalities are common in clinical practice.
Hypokalemia and hypocalcemia are frequently encountered electrolyte disturbances.
Magnesium plays a crucial role in various cellular functions and electrolyte balance.

Observation:

Serum magnesium levels may not accurately reflect total body magnesium due to its predominantly intracellular location.
Normal serum magnesium levels can mask underlying total body magnesium deficiency.
This deficiency can contribute to or exacerbate other electrolyte abnormalities.

Findings:

Two cases are presented where hypomagnesemia was a significant factor in electrolyte disturbances.
These cases highlight the importance of considering hypomagnesemia even when serum magnesium is within the normal range.
The findings underscore the complex interplay between magnesium and other electrolytes.

Implications:

Clinicians should consider testing for hypomagnesemia in patients with unexplained or persistent electrolyte abnormalities.
Accurate diagnosis and management of hypomagnesemia are crucial for effective treatment of electrolyte imbalances.
This approach can improve patient outcomes by addressing a potentially overlooked cause of electrolyte disturbances.

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