Artificial heart valve. Hand holding a prosthetic Starr-Edwards heart valve. This is a mechanical device of the ball-and-cage type. A heart valve regulates the flow of blood from the heart to the main arteries which distribute blood to the lungs or around the body. Malfunctions of a heart valve due to disease or malformation may result in it narrowing with a consequent reduction in blood flow or backflow. An incompetent heart valve can be replaced with a prosthetic valve through surgery | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Allen, Steve |
Taille de l’image : | 5268 px × 3526 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |