Indications for Impella device explant. Of the 39 total device implants, 16 (41%) were explanted for ventricular recovery, 12 (31%) for transition to another mode of mechanical circulatory support, 4 (10%) following completion of a high risk catheterization procedure, 6 (15%) following patient death with the device in place, and 1 (3%) prior to heart transplant.