A 1-Hour-Old Neonate with Prenatally Diagnosed Tetralogy of Fallot Is

A 1-hour-old neonate with prenatally diagnosed tetralogy of Fallot is admitted to the neonatal intensive care unit with cyanosis.  The mother is a 28-year-old gravida 3 para 2 who received routine prenatal care.  The patient was born via spontaneous vaginal delivery at 35 weeks gestation.  Initial Apgar scores are 5 and 7 at 1 and 5 minutes after birth, respectively.  The neonate's lips, fingers, and toes appear cyanotic.  This patient should be immediately treated with a medication producing which of the following effects?

A) Decreased left ventricular end diastolic pressure
B) Increased pulmonary surfactant levels
C) Increased pulmonary vascular resistance
D) Maintenance of ductus arteriosus patency
E) Stimulation of fetal hemoglobin production

Correct Answer:

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