Calcium is a mineral in the body. It is needed for strong bones and teeth. Calcium also helps the heart, nerves, muscles, and other body systems work well.
A low blood calcium level is called hypocalcemia. This article discusses low blood calcium level in infants.
Hypocalcemia - infants
A healthy baby most often has very careful control of blood calcium level.
A low calcium level in the blood is more likely to occur in newborns, more commonly in those who were born too early (preemies). Common causes of hypocalcemia in a newborn include:
There are also some rare illnesses that can lead to low calcium level. These include:
Babies with hypocalcemia often have no symptoms. Sometimes, babies with low calcium levels are jittery or have tremors or twitching. Rarely, they have seizures.
These babies may also have a slow heart rate and low blood pressure.
The baby may get extra calcium, if needed.
Problems with low calcium level in newborns or premature infants most often do not continue long-term.
Doyle DA. Hormones and peptides of calcium homeostasis and bone metabolism. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 588.
Escobar O, Viswanathan P, Witchel SF. Pediatric endocrinology. In: Zitelli BJ, McIntire SC, Nowalk AJ, eds. Zitelli and Davis' Atlas of Pediatric Physical Diagnosis. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 9.
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