Abstract

Aim: To analyze the literature on the processes of formation of endogenous and exogenous carnitine, its metabolism and function in the newborn. Material and methods: The literature data and international clinical recommendations for pathological conditions leading to primary and secondary carnitine deficiency have been retrospectively analyzed. A clinical case of a child with suspected systemic carnitine deficiency is presented. Conclusions: Depending on the reasons that led to carnitine deficiency, there are primary and secondary carnitine deficiency. Primary carnitine deficiency is a rare condition that can lead to metabolic decompensation, muscular and cardiac myopathy, and sudden death. Secondary carnitine deficiency can be caused by a genetically determined congenital metabolic defect, insufficient substrate intake, acquired disorder, immaturity of the biochemical pathway in premature infants, renal failure or iatrogenic exposure. Familiarization with the main causes of carnitine deficiency in newborns will more effectively detect and correct the clinical manifestations of this condition.

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