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: Irregular fetal heart rate is not an expected finding in a client with a hydatidiform mole, as it can indicate fetal arrhythmia, distress, or demise. A client with a hydatidiform mole may have no fetal heart tones, as the pregnancy is nonviable and consists of abnormal trophoblastic tissue.

Choice B reason: Rapid decline in human chorionic gonadotropin (hCG) levels is not an expected finding in a client with a hydatidiform mole, as it can indicate a normal or abnormal termination of pregnancy. A client with a hydatidiform mole may have markedly elevated hCG levels, as the trophoblastic tissue secretes excessive amounts of the hormone.

Choice C reason: Profuse, clear vaginal discharge is not an expected finding in a client with a hydatidiform mole, as it can indicate a normal or abnormal cervical mucus production. A client with a hydatidiform mole may have vaginal bleeding, which is often dark brown or bright red, and may contain grape-like vesicles.

Choice D reason: Excessive uterine enlargement is an expected finding in a client with a hydatidiform mole, as it reflects the rapid growth of the trophoblastic tissue and the accumulation of fluid-filled vesicles. A client with a hydatidiform mole may have a uterus that is larger than expected for the gestational age, and may experience uterine cramping or pain.

Choice A reason: Hypocalcemia is not the priority focus of care, as it is a low level of calcium in the blood that can cause muscle twitching, seizures, or cardiac arrhythmias. Hypocalcemia can affect newborns who have mothers with diabetes mellitus, but it is less common and less severe than hypoglycemia.

Choice B reason: Hyperbilirubinemia is not the priority focus of care, as it is a high level of bilirubin in the blood that can cause jaundice, a yellowish discoloration of the skin and eyes. Hyperbilirubinemia can affect newborns who have macrosomia, but it is usually a benign and self-limiting condition that resolves within a few days.

Choice C reason: Hypomagnesemia is not the priority focus of care, as it is a low level of magnesium in the blood that can cause tremors, tetany, or seizures. Hypomagnesemia can affect newborns who have mothers with diabetes mellitus, but it is rare and usually asymptomatic.

Choice D reason: Hypoglycemia is the priority focus of care, as it is a low level of glucose in the blood that can cause diaphoresis, jitteriness, lethargy, or apnea. Hypoglycemia can affect newborns who have macrosomia and mothers with diabetes mellitus, as they have increased insulin production and decreased glucose supply after birth. Hypoglycemia can lead to brain damage or death if not treated promptly.