Which of the following statements about VSDs is/are correct?
A. Perimembranous lesions are located in the region of the membranous portion of the interventricular septum near the anteroseptal commissure of the tricuspid valve.
B. Muscular VSDs are holes in the interventricular septum that are bordered by muscle on three sides and by the pulmonary and the aortic valve annulus superiorly.
C. VSD, in its isolated form, is the most commonly recognized congenital heart defect.
D. The conduction bundle runs along the posteroinferior rim of a perimembranous VSD.
Answer:A
Which of the following statements about VSDs is/are correct?
A. Perimembranous lesions are located in the region of the membranous portion of the interventricular septum near the anteroseptal commissure of the tricuspid valve. B. Muscular VSDs are holes in the interventricular septum that are bordered by muscle on three sides and by the pulmonary and the aortic valve annulus superiorly. C. VSD, in its isolated form, is the most commonly recognized congenital heart defect. D. The conduction bundle runs along the posteroinferior rim of a perimembranous VSD.