Severe neonatal hypercalcemia caused by subcutaneous fat necrosis without any apparent cutaneous lesion.

UNLABELLED: Subcutaneous fat necrosis is a classic, albeit uncommon, cause of neonatal hypercalcemia. It occurs in newborn infants within the first month of life following a complicated delivery. The diagnosis is usually easy because of the presence of red-purple plaques in fatty areas along with firm subcutaneous nodules. A 1-month-old neonate, born strangled by her umbilical cord, presented with diarrhea and hypercalcemia (3.46 mM) with an initial physical examination considered normal. Her biological evaluations were as follows: P = 1.37 mM (1.6-2.2); PTH = 3 ng/L (12-65); 25-OH vitamin D = 87 nM (23-113); (1,25)-OH(2) vitamin D = 192 ng/L (20-46). The third day, a careful exam of the whole cutaneous surface revealed small firm subcutaneous nodules in the ischial region. Despite the absence of any visible skin modification, the association of perinatal stress and high (1,25)-OH(2) vitamin D level with subcutaneous nodules led to the diagnosis of subcutaneous fat necrosis. She was treated with oral prednisone for 45 days. Serum calcium levels normalized within a week, and the nodules disappeared without complications. CONCLUSION: Subcutaneous fat necrosis may induce severe hypercalcemia without any visible cutaneous lesion.

Maternal and cord blood ghrelin in the pregnancies of smoking mothers: possible markers of nutrient availability for the fetus.

AIMS: To investigate the role of ghrelin in maternal and fetal metabolism, we determined its value in maternal smoking, a specific cause of reduced placenta function and fetal growth. METHODS: In 85 normal term pregnancies, 42 in smoking and 43 in non-smoking mothers, we measured ghrelin in the maternal blood at the onset of labor and in the cord blood of their 85 singletons immediately after birth. We determined the relationships between ghrelin and placental GH (PGH), pituitary GH (pitGH), and IGF-I. RESULTS: The newborns of smoking mothers weighed 0.24 kg less (p < 0.05) than those of non-smoking mothers. Cord blood ghrelin was 71% higher and PGH and cord blood IGF-I were 34% and 32% lower, respectively, in the pregnancies of smoking compared with non-smoking mothers (p < 0.05). Cord blood ghrelin was unrelated to pitGH and cord blood IGF-I. Maternal ghrelin was unchanged in smoking mothers, increased with maternal fasting duration (r = 0.26, p < 0.05), showed no correlation with PGH and negative correlation with cord blood IGF-I (r = -0.42, p < 0.01). CONCLUSION: The decrease in placental function and fetal growth in smoking mothers is associated with an increase in cord blood ghrelin, and no change in maternal ghrelin. Maternal ghrelin concentration increases with fasting, and is negatively correlated with cord blood IGF-I: it may signal a reduction in the level of nutrients available for placental transfer. No correlation supports a role for ghrelin in PGH or pitGH secretion.

Bubbles in the brain veins as a complication of daily management of a scalp vein catheter.

Recently, it has been suspected that venous dural sinus air embolisms could occur as a result of scalp vein infusion. The possible mechanism for this complication has not been documented to date, and procedures to avoid venous dural sinus air embolism have not been presented. We report a preterm neonate who demonstrated venous dural sinus air embolism following daily management of a scalp vein catheter. The air embolism disappeared in a few days without complications. Clinicians should avoid injecting air into a scalp vein catheter and leaving it open to air. Following careful examination and review of the infant's case, we were able to conclude that positioning the infant in either supine or Trendelenburg position during daily management of scalp venous infusions and using an air-occlusive dressing once the catheter is removed could limit the risk of venous dural sinus air embolisms caused by scalp vein infusions.