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Fetal Therapy

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All EXCEPT which of the following are examples of fetal conditions that may be amendable to medical therapy delivered transplacentally?

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a. Dandy-Walker malformation

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b. Supraventricular tachycardia

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c. Congenital adrenal hyperplasia

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d. Congenital cystic adenomatoid malformation

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When a fetal rhythm disturbance is suspected, what type of sonography should be performed to determine the relationship between the atrial and ventricular rates?

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a. M-mode

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b. Power Doppler

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c. 3-dimensional

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d. Color Doppler

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What is the most common fetal arrhythmia?

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a. Atrial flutter

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b. Congenital heart block

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c. Supraventricular tachycardia

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d. Premature atrial contraction

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A 16-year-old primigravida is referred for sonographic examination because of a suspected fetal arrhythmia. The following image is obtained and demonstrates a premature atrial contraction (blue arrow). What is the most appropriate treatment for this condition?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Fetal imaging. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 10-24.

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a. Digoxin

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b. Amiodarone

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c. Corticosteroids

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d. None of the above

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A 16-year-old primigravida is referred for sonographic examination because of a suspected fetal arrhythmia. The following image is obtained and demonstrates a premature atrial contraction (blue arrow). For the patient, you counsel her that this condition can progress to supraventricular tachycardia in approximately what percentage of fetuses?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Fetal imaging. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 10-24.

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a. 2%

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b. 5%

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c. 15%

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