Myocardial dysfunction due to hypocalcemia

Area of Science:

• Pediatric Cardiology
• Endocrinology
• Nutritional Science

Background:

• Hypocalcemia is an underreported cause of myocardial dysfunction and congestive cardiac failure in infants.
• Severe left ventricular dysfunction in infants can be linked to electrolyte imbalances.

Purpose of the Study:

• To describe a cohort of infants with severe left ventricular dysfunction due to hypocalcemia.
• To identify the primary cause of hypocalcemia in affected infants.
• To evaluate the efficacy of vitamin D and calcium supplementation in treating these cardiac issues.

Main Methods:

• Case series describing 15 infants with severe left ventricular dysfunction.
• Laboratory investigations to assess serum calcium and magnesium levels.
• Identification of vitamin D deficiency as the etiology for hypocalcemia.

Main Results:

• All 15 infants presented with severe left ventricular dysfunction.
• Hypocalcemia was diagnosed in all patients, with hypomagnesemia present in some.
• Vitamin D deficiency was the predominant cause of hypocalcemia.
• Significant improvement in cardiac function was observed following vitamin D and calcium supplementation.

Conclusions:

• Hypocalcemia is a critical, yet reversible, cause of pediatric congestive cardiac failure.
• Vitamin D deficiency should be considered in infants presenting with unexplained myocardial dysfunction.
• Prompt diagnosis and treatment with vitamin D and calcium can resolve cardiac issues in affected infants.