Aortic insufficiency
It is a type of valvular disease that compromises the aortic valve. The valve does not close appropriately, and the blood flow becomes compromised. It is sometimes a structural problem of the aortic valve but can also be caused by certain medications, especially dopamine agonists. When the problem is acute, it causes a murmur heard in the left sternal border, louder when the patient is leaning forward or sitting. When the problem is chronic, the heart murmur is high-pitched, located in the diastole and the same sternal border.