Anyone can assist me with the hemodynamic of ventricular septal defect?

Basic issues: The two ventricles supply system that need different pressures. The right pumps the short distance to the lungs & requires less pressure. The left pumps to the whole body and requires higher pressure. Small holes can have big murmurs.The bigger the hole (vsd) the more equal the pressure & a murmur may not be heard. Over time, higher pressures can injure the blood vessels in the lungs.

Yes, what is the ?.: The hemodynamics of vsds are interesting. I need more info regarding the type/size etc. But one basic principle is that blood follows the path of least resistance. Our lungs have less resistance than our body, and so blood will often flow from the left ventricle to right ventricle. That leads to increased flow to lungs, but also to the left atrium and left ventricle. Any specific question?

Too complicated: There is no short answer to this because it depends upon the size of the defect. Blood will move from the left ventricle to the right. The volume of blood, and hence the effect, will depend upon the size of the defect.