In an infant with suspected PDA, which of the following would be the optimal method of confirming the diagnosis?
A. Chest film.
B. Cardiac catheterization.
C. Retrograde aortography via an umbilical artery catheter.
D. Two-dimensional echocardiography with continuous-wave and color-flow Doppler echocardiography.
Answer:D
In an infant with suspected PDA, which of the following would be the optimal method of confirming the diagnosis?
A. Chest film. B. Cardiac catheterization. C. Retrograde aortography via an umbilical artery catheter. D. Two-dimensional echocardiography with continuous-wave and color-flow Doppler echocardiography.