Read the Following Excerpt from a Patient's Health Record: ASSESSMENT

Read the following excerpt from a patient's health record: ASSESSMENT
1) Postop for VSD repair-routine postop orders and care.
2) When patient switches to PO, we will d/c IV ABx, and at discharge, she will continue antibiotics as needed for endocarditis prophylaxis.
For what did this patient have an operation?

A) Atrial fibrillation
B) Atrial septal defect
C) Endocarditis
D) Ventral flutter
E) Ventricular septal defect