[Ineffectiveness of vitamin 25(OH)D3 in the prevention of hypocalcemia induced by phototherapy].

Phototherapy causes a higher incidence of hypocalcemia in preterm infants by still unknown pathogenetic mechanism. The authors studied 100 preterm newborns in order to verify whether Calcifediolo (25-OH-D3) could be useful to prevent the phototherapy-induced hypocalcemia. Results obtained show that Calcifediolo is not able, anyway, to lower the increase of the phototherapy-induced hypocalcemia in preterm infants. Vit D is therefore unlikely to play any important role in the patogenesis of phototherapy-induced hypocalcemia.