A nurse is caring for a client who is at 22 weeks of gestation and has been unable to control her gestational diabetes mellitus with diet and exercise. The nurse should anticipate a prescription from the provider for which of the following medications for the client?

Choice A reason: This statement is incorrect, as it is not the definition of polyhydramnios, but rather a possible cause of it. Polyhydramnios is a condition where the amniotic fluid volume exceeds 2,000 mL at term, or the amniotic fluid index (AFI) is greater than 25 cm. Polyhydramnios can occur in multiple pregnancies, as the fetuses produce more urine and fluid than a single fetus.

Choice B reason: This statement is incorrect, as it is not the definition of polyhydramnios, but rather a possible complication of it. Polyhydramnios can cause fetal anomalies, such as esophageal atresia, anencephaly, or neural tube defects, which impair the swallowing or absorption of the amniotic fluid. Polyhydramnios can also cause fetal growth restriction or distress, as the excess fluid can compress the umbilical cord or the placenta, and reduce the blood flow and oxygen delivery to the fetus.

Choice C reason: This statement is correct, as it is the definition of polyhydramnios, which is a condition where the amniotic fluid volume exceeds 2,000 mL at term, or the amniotic fluid index (AFI) is greater than 25 cm. Polyhydramnios can be diagnosed by ultrasound, and it can cause maternal and fetal complications, such as preterm labor, premature rupture of membranes, placental abruption, or cord prolapse.

Choice D reason: This statement is incorrect, as it is not the definition of polyhydramnios, but rather a marker of fetal anomalies. Alpha-fetoprotein (AFP) is a protein that is produced by the fetus, and it can be measured in the maternal serum or the amniotic fluid. An elevated level of AFP in the amniotic fluid can indicate fetal anomalies, such as neural tube defects, abdominal wall defects, or renal anomalies, which can cause polyhydramnios.

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.