CHASSENET / SCIENCE PHOTO LIBRARY CHASSENET / SCIENCE PHOTO LIBRARY
Editorial use only.
Heart valve surgery training. Surgeon using a training dummy for percutaneous aortic valve replacement surgery. This is a minimally invasive procedure, where an artificial (prosthetic) heart valve is delivered via a catheter rather than through an incision in the chest. There are four valves in the human heart, all of which prevent the backflow of blood. Damage to the valves can lead to malfunctioning of the heart and death. If a valve cannot be repaired it must be replaced.
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