Answers to the CME Quiz for "Maternal-Fetal Surgery: Where Are We and How Did We Get Here?" by Nancy C. Chescheir, MD (Obstet Gynecol 2009;113[3])

1. 1. Following maternal-fetal surgery, it is common for delivery to occur at:

B. 34 weeks of gestation

2. Based on current evidence, the most appropriate management for fetuses with mild congenital diaphragmatic hernia is:

A. Postnatal therapy

3. Data from a 2001 study suggest that ventriculoperitoneal shunts develop a mechanical failure during the first year in approximately what percent of cases?

E. 40%

4. The most common complication of fetoscopic surgery is:

A. Premature rupture of the membranes

5. Approximately what percentage of monochorionic, diamniotic twin pregnancies demonstrate twin-to-twin transfusion syndrome?

E. 15.0%

6. If twin-to-twin transfusion syndrome is diagnosed, it is likely that delivery would be recommended if the syndrome were diagnosed at or after:

E. 30 weeks of gestation

7. When one twin of a monochorionic, diamniotic pregnancy dies, approximately what percentage of surviving co-twins will demonstrate evidence of cerebral injury?

C. 18%

8. A single amnioreduction of the polyhydramniotic sac in the case of symptomatic twin-to-twin transfusion syndrome results in a permanent reversal of the process in approximately what percent of cases?

B. 20%

ACCME Accreditation: The American College of Obstetricians and Gynecologists (ACOG) is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians. (Continuing medical education credit for "Maternal-Fetal Surgery: Where Are We and How Did We Get Here?" will be available through March 2012.)

AMA PRA Category 1 Credit^TM and ACOG Cognate Credit: The American College of Obstetricians and Gynecologists (ACOG) designates this educational activity for a maximum of 2 AMA PRA Category 1 Credits^TM or up to a maximum of 2 Category 1 ACOG cognate credits. Physicians should only claim credit commensurate with the extent of their participation in the activity.

Disclosure Statement: Current guidelines state that continuing medical education (CME) providers must ensure that CME activities are free from the control of any commercial interest. All authors, reviewers, and contributors have disclosed to ACOG all relevant financial relationships with any commercial interests. The authors have made the following disclosures: Dr. Chescheir was a program scientist with the National Institutes of Health (Bethesda, MD) from 2003 to 2005. Any conflicts have been resolved through group and outside review of all content.

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