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Fetal Therapy

Fetuses with premature atrial contractions can later be found to have which of the following arrhythmias?

a. Atrial flutter

b. Atrial fibrillation

c. First-degree heart block

d. Supraventricular tachycardia

Sustained fetal tachyarrhythmias can lead to which of the following fetal complications?

a. Hydrops

b. Oligohydramnios

c. Fetal-growth restriction

d. All of the above

Which of the following agents are commonly administered to women to treat fetal tachyarrhythmias?

a. Sotalol

b. Digoxin

c. Flecainide

d. All of the above

The majority of cases of congenital adrenal hyperplasia are caused by which enzyme deficiency?

a. 21-Hydroxylase deficiency

b. 11β-Hydroxylase deficiency

c. 17α-Hydroxylase deficiency

d. 3β-Hydroxysteroid dehydrogenase deficiency

Before what gestational age does maternal treatment with dexamethasone need to commence to prevent virilization of a female fetus with congenital adrenal hyperplasia?

a. 6 weeks’ gestation

b. 7 weeks’ gestation

c. 9 weeks’ gestation

d. 12 weeks’ gestation

A 31-year-old woman presents with her husband for her screening ultrasound. At 19 weeks’ gestation the fetal abnormality pictured below is found. You counsel her that as this mass expands, the fetus is at risk for which of the following?

a. Fetal death

b. Hydrops fetalis

c. Depressed cardiac output

d. All of the above

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