ABSTRACT
We measured serum levels of 25-hydroxy vitamin D (25(OH) D) in 79 preterm neonates (£32 wk), and correlated it with serum ionized calcium (Ca++) levels at 48-72 h and serum phosphorus and alkaline phosphatase levels at 2-3 weeks of age. The mean (SD) 25 (OH)D level was 14.8 (7.0) ng/mL. 25(OH)D levels had a weak positive correlation with Ca++ (r=0.299) and phosphorus (r=0.186), and a negative correlation with alkaline phosphatase (r=-0.523).
ABSTRACT
25-hydroxy Vitamin D levels of 106 maternal blood samples and cord blood levels of their newborns were studied. Maternal mean (SD) vitamin D level was 16.3(10.3) ng/mL, and mean (SD) cord blood level was 12.8 (8.5) ng/mL. Seventy-five (70.7%) mothers (70.7%) and 88 (83%) newborns had hypovitaminosis-D. Seventy (93.3%) newborns of mothers with hypovitaminosis-D had low vitamin D levels. There was a strong correlation between maternal and newborn Vitamin D levels (r=0.6; P<0.001). There is a high prevalence of hypovitaminosis D in women in labor and their newborns.