5.8.1 Haemodynamic effects
5.8.1 Haemodynamic effects

The defect means that blood returning to the RA must pass into the LA and LV before returning to the RV. There is therefore marked volume overload of the left side which may result in CHF. In addition, deoxygenated blood flows into the LV and from there into the systemic circulation so cyanosis is likely.