ABSTRACT
Ventricular assist devices (VADs) allow patients to be kept in stable hemodynamic conditions until the heart transplant is performed, which is more efficient in the use of organs and reduces transplantation of patients on the waiting list. VADs are classified into two subtypes: the first being pulsatile, used as a cardiopulmonary bypass, uses a diaphragm that advances by mechanical or pneumatic means to pump blood to the aorta and the second type, on the other hand, is implantable centrifugal pumps, in which these are characterized by continuous pumping of blood through a rotor. These pumps are smaller than pulsatile and provide a more dynamic flow control system.
