Which immunization should be considered carefully before being given to a child receiving chemotherapy for cancer?

A. Administering a high-protein diet is incorrect because oral or enteral feeding is not the immediate priority after birth in an infant with myelomeningocele. The initial focus is on protecting the exposed neural tissue and preventing infection, not nutritional supplementation.

B. Covering the sac with a sterile, moist dressing and positioning the infant prone is correct because a myelomeningocele involves exposed spinal cord and meninges, placing the infant at high risk for infection and trauma. A sterile, nonadherent, moist dressing (often saline-soaked) prevents drying and rupture of the sac, while the prone position minimizes pressure on the defect until surgical repair can be performed.

C. Placing the infant in a supine position is incorrect because this position increases pressure on the spinal defect, raising the risk of rupture and infection. While monitoring vital signs is important, positioning must prioritize protection of the lesion.

D. Beginning oral feeding immediately is incorrect because feeding is not the immediate concern and may be delayed until the infant is stabilized and evaluated. Additionally, the risk of aspiration and the need for surgical intervention take precedence.

A. Patent ductus arteriosus, foramen ovale, aortic arch is incorrect because the aortic arch is a normal part of the circulatory system and does not close after birth. A patent ductus arteriosus is abnormal if it remains open after birth.

B. Foramen ovale, ductus arteriosus, coronary sinus is incorrect because the coronary sinus is a normal cardiac structure that collects venous blood from the myocardium into the right atrium; it does not close after birth.

C. Pulmonary artery, ductus venosus, tricuspid valve is incorrect because the pulmonary artery and tricuspid valve are normal heart structures, not fetal shunts. Only the ductus venosus among these closes after birth.

D. Foramen ovale, ductus arteriosus, ductus venosus is correct because these three fetal shunts bypass the lungs and liver: the foramen ovale allows blood to flow from the right atrium to the left atrium, bypassing the lungs; the ductus arteriosus connects the pulmonary artery to the aorta, diverting blood from the lungs; and the ductus venosus shunts oxygenated blood from the umbilical vein directly to the inferior vena cava, bypassing the liver. These structures normally close after birth as the newborn transitions to pulmonary and hepatic circulation.