Temporary mechanical ventricular support: Part 2.

Temporary mechanical circulatory support is currently indicated in postcardiotomy cardiogenic shock and if necessary as a bridge to transplantation where no ventricular recovery is expected. Which mechanical support system to employ as a bridge to transplantation remains debatable. Implantable devices presently used are prototypes of proposed permanent devices for the treatment of severe heart failure in patients for whom transplantation is not suitable or available.