A 1-Week-Old Girl Is Evaluated in the Neonatal Intensive Care

A 1-week-old girl is evaluated in the neonatal intensive care unit.  She was born at 29 weeks gestation via spontaneous vaginal delivery due to preterm labor.  Her mother had routine prenatal care.  Rupture of membranes with clear amniotic fluid occurred 2 hours prior to delivery.  Apgar scores were 8 and 8 at 1 and 5 minutes, respectively.  Birth weight was 1.51 kg (3 lb 5.3 oz) .  The patient has been tolerating enteral feeds via an orogastric tube, and her weight remains appropriate.  Vital signs are normal.  Examination shows a sleeping, nondysmorphic infant.  A nasal continuous positive airway pressure mask is in place.  The anterior fontanelle is open and soft.  The oropharynx is clear, and the neck is supple.  The lungs are clear to auscultation, and cardiac examination is unremarkable.  The abdomen is soft without organomegaly.  The external genitalia appear normal, and the skin is intact.  The newborn moves all 4 extremities.  Which of the following screening tests is indicated in this patient?

A) Abdominal ultrasound
B) Echocardiogram
C) Head ultrasound
D) Karyotype analysis
E) Urinalysis

Correct Answer:

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