A nurse is assessing a newborn whose mother had a primary cytomegalovirus (CMV) infection during pregnancy. The newborn acquired CMV transplacentally. Which of the following findings should the nurse expect the newborn to exhibit?

The correct answer is choice c. One acceleration of the FHR within a 20-min period.

Here's the rationale for each choice:

Choice A: Rationale: A non-stress test (NST) is supposed to assess fetal well-being by looking for accelerations in the fetal heart rate (FHR) in response to fetal movement. An FHR that peaks 20 beats above the baseline is a desirable finding in an NST, indicating good fetal reactivity.

Choice B: Rationale: While not typical during a standard NST, three uterine contractions within a 20-minute period might not necessarily require immediate intervention. However, the nurse should document it and notify the healthcare provider for further assessment, especially if the contractions are causing discomfort or if there are other concerning signs.

Choice C: Rationale: A single acceleration of the FHR within a 20-minute NST is considered non-reactive and may indicate fetal compromise. This finding requires further investigation by the healthcare provider, potentially including additional monitoring or interventions.

Choice D: Rationale: Uterine contractions lasting 20 to 30 seconds each are not a typical finding during an NST, but they may not necessarily be a cause for immediate concern unless they are causing the client pain or are accompanied by other concerning signs. The nurse should document the contractions and notify the healthcare provider.

Choice A rationale:

Measuring the abdominal circumference at the level of the newborn's umbilicus every 12 hr is a critical action in this scenario. The newborn has necrotizing enterocolitis (NEC), a serious gastrointestinal condition, and measuring abdominal circumference can help monitor for changes in abdominal distention, which is a sign of NEC progression.

Choice B rationale:

Inserting an orogastric decompression tube with low wall suction may not be the most appropriate action for a newborn with NEC. While decompression tubes can be used in some cases of NEC, their insertion should be guided by specific clinical indications, and not all cases require them.

Choice C rationale:

Providing the newborn with an iron-rich formula containing vitamin B12 every 2 hr is not indicated for NEC. NEC requires specialized medical management and treatment, which may include bowel rest and other interventions, but providing iron-rich formula is not one of them.

Choice D rationale:

Administering nitric oxide inhalation therapy is not relevant to the management of NEC. Nitric oxide inhalation therapy is used for respiratory conditions, particularly persistent pulmonary hypertension of the newborn, and does not address the gastrointestinal issues seen in NEC.