What is the significance of hypocalcemia in the neonate, and how is it treated?

• A. It can cause seizures and arrhythmias; treat with calcium gluconate if symptomatic or with low calcium.
• B. It is always asymptomatic and requires no treatment.
• C. It is treated with calcium chloride.
• D. It only affects bone mineralization and is treated with phosphate.

Answer: (C)

Neonatal hypocalcemia is important because low calcium increases neuromuscular excitability and can lead to seizures, irritability, apnea, and even life-threatening arrhythmias. When a newborn shows symptoms or has a significantly low calcium level, the immediate management is intravenous calcium with calcium gluconate—the preferred choice because it is safer to administer in a peripheral vein and provides reliable correction of the deficit. The dose is given with careful monitoring of heart rate and blood pressure, and repeated or continuous administration may be needed until calcium normalizes. After stabilization, transition to maintenance therapy if indicated, which may include oral calcium and vitamin D and addressing any underlying causes such as prematurity, maternal diabetes, or hypoparathyroidism. It’s also important to assess and correct magnesium if low, since hypomagnesemia can contribute to or worsen hypocalcemia. Calcium chloride is a stronger irritant and is generally not used as the initial treatment in neonates unless there are specific circumstances with appropriate venous access.