Hi! I was hoping someone could help me out with this. The TPR book is says that if the bicuspid valve is ruptured, then blood flows both towards the aorta and towards the left atrium. Then it also says that this results in elevated pulmonary blood pressure and pulmonary edema <--this part I don't get...why is this the case? Also, just to clarify...does one action potential result in one heart beat in the cardiac muscle? Thanks!