The murmur of a ventricular septal defect (VSD)occurs when the ventricle contracts and blood flows from the left ventricle into the right ventricle.This creates a heart murmur.

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The murmur of a ventricular septal defect (VSD) is holosystolic, meaning it occurs throughout systole (when the ventricles contract) and is heard from the first heart sound to the second heart sound. It is not heard during diastole (when the ventricles relax), so choices A and B can be ruled out. Late systolic murmurs occur closer to the end of systole and are often associated with mitral valve prolapse, which is not relevant to VSD.

The Murmur of a Ventricular Septal Defect (VSD)occurs When the Ventricle