A nurse is providing teaching to a client about the purpose of her upcoming indirect Coombs' test. Which of the following statements should the nurse include in the teaching?

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.

Choice A rationale:

Determining gestational age in the first trimester is a common and important use of ultrasound. It helps confirm the estimated due date and monitor the fetus's growth and development.

Choice B rationale:

Performing a biophysical profile in the first trimester is not a common use of ultrasound. Biophysical profiles are usually performed in the second or third trimester to assess fetal well-being.

Choice C rationale:

Observing placental maturity in the first trimester is not a standard use of ultrasound. Placental maturity is typically assessed later in pregnancy, especially in the third trimester.

Choice D rationale:

Detecting intrauterine growth restriction in the first trimester is not a primary use of ultrasound. Intrauterine growth restriction is more commonly assessed in the later stages of pregnancy when fetal growth is a concern.