A heart-lung machine takes over the work of the heart and lungs during surgeries. It oxygenates and circulates blood when a person's heart or lungs can't work properly. While essential, using a ...

A leaky heart valve occurs when a heart valve doesn’t close properly, allowing blood to flow backward. During pregnancy, this condition can affect circulation and increase strain on your heart. A ...

Your heart is a muscular organ that helps circulate your blood, which delivers oxygen and nutrients to your tissues. There are four chambers and four valves in your heart, and each ensures proper ...