A nurse is preparing to administer an injection of Rh0 (D) immunoglobulin. The nurse should understand that the purpose of this injection is to prevent which of the following newborn complications?

Choice A reason: This statement is correct, as these are the common complications of post-term infants, who are born after 42 weeks of gestation. Meconium aspiration can occur when the fetus passes meconium in utero and inhales it into the lungs, causing respiratory distress, inflammation, and infection. Hypoglycemia can occur due to the depletion of glycogen stores and the increased metabolic demands. Dry, cracked skin can occur due to the loss of vernix caseosa and the reduced amniotic fluid.

Choice B reason: This statement is incorrect, as these are the signs of neonatal hypocalcemia, which is a low level of calcium in the blood. Neonatal hypocalcemia can occur due to maternal diabetes, prematurity, or asphyxia, and can cause jitteriness, seizures, or tetany.

Choice C reason: This statement is incorrect, as these are the characteristics of preterm infants, who are born before 37 weeks of gestation. Excessive vernix caseosa covering the skin is a protective coating that prevents heat and water loss. Lethargy and RDS are signs of immaturity and underdevelopment of the central nervous system and the lungs.

Choice D reason: This statement is incorrect, as these are the features of infants with erythroblastosis fetalis, which is a hemolytic disease caused by the incompatibility of the Rh factor or the ABO blood group between the mother and the fetus. Golden yellow to green-stained skin and nails are due to the accumulation of bilirubin, which is a breakdown product of red blood cells. Absence of scalp hair and an increased amount of subcutaneous fat are due to the chronic hypoxia and edema.

Choice A reason: Monitoring the newborn's blood pressure is not the most appropriate action, as it is not directly related to the signs of diaphoresis, jitteriness, and lethargy. These signs are more indicative of hypoglycemia, which is a low blood sugar level that can affect newborns, especially those who are premature, small for gestational age, or have diabetic mothers.

Choice B reason: Initiating phototherapy is not the most appropriate action, as it is used to treat hyperbilirubinemia, which is a high level of bilirubin in the blood that can cause jaundice, a yellowish discoloration of the skin and eyes. Hyperbilirubinemia does not cause diaphoresis, jitteriness, or lethargy.

Choice C reason: Obtaining blood glucose by heel stick is the most appropriate action, as it can confirm the diagnosis of hypoglycemia, which is the most likely cause of the signs of diaphoresis, jitteriness, and lethargy. The nurse should perform a heel stick using a sterile lancet and a glucose meter, and obtain a blood sample from the lateral aspect of the heel. The nurse should also provide warmth, stimulation, and feeding to the newborn, and report the blood glucose level to the provider.

Choice D reason: Placing the newborn in a radiant warmer is not the most appropriate action, as it can cause dehydration, fluid loss, and further hypoglycemia. The nurse should use a radiant warmer only if the newborn is hypothermic, which is a low body temperature that can also affect newborns. The nurse should monitor the newborn's temperature and skin color, and adjust the warmer accordingly.