Recent studies have provided important information on the nature of PV electrophysiology and of the role of the PVs in initiation and maintenance of AF. Reentry is responsible for the majority of ...

The vena cava is the largest vein in the body. It carries deoxygenated blood from the body back to the heart. The pulmonary artery carries deoxygenated blood away from the right ventricle to the ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...