Preterm and IUGR Baby Care

Which of the following is the most common cause of neonatal hypoglycemia in preterm infants?

A 32-week gestation male infant is born to a 28-year-old primigravida with gestational hypertension. Birth weight is 1200 g (< 10th percentile for gestation). The baby is noted to have asymmetric growth restriction with relatively spared head circumference. On examination, the infant is tachypneic (RR 65/min), has intercostal retractions, and a barrel-shaped chest. Abdominal examination reveals hepatomegaly. Chest X-ray shows ground-glass opacities bilaterally. Blood glucose is 35 mg/dL, and serum calcium is 7.2 mg/dL. What is the most appropriate immediate management priority for this infant?

A 30-week gestation female infant weighing 900 g is born to a 26-year-old mother with preeclampsia. On day 3 of life, the infant develops abdominal distension, bile-stained gastric aspirate, and bloody stools. Temperature is 36.8°C, heart rate 160/min, blood pressure 48/28 mmHg, and capillary refill time is 4 seconds. Abdominal examination reveals generalized tenderness and absent bowel sounds. Abdominal X-ray shows pneumatosis intestinalis and portal venous gas. Which of the following is the most appropriate initial management?

What is the recommended target blood pressure (systolic/diastolic in mmHg) for a 7-day-old preterm infant born at 28 weeks gestation?