PLEASANTON, Calif., Jan. 7, 2013 /PRNewswire/ -- Thoratec Corporation (NASDAQ: THOR), a world leader in device-based mechanical circulatory support (MCS) therapies to save, support and restore failing hearts, today announced that the U.S. Food and Drug Administration (FDA) has granted an Investigational Device Exemption (IDE) to commence the REVIVE-IT study utilizing the HeartMate II® Left Ventricular Assist System. REVIVE-IT ( Randomized Evaluation of VAD Inter VEntion before Inotropic Therapy) is a prospective, randomized, controlled trial designed to compare the use of the HeartMate II LVAD with optimal medical management (OMM) in patients with New York Heart Association (NYHA) Class III heart failure. This feasibility study is intended to provide initial scientific evidence regarding the potential advantages of MCS therapy in treating earlier-stage, less ill heart failure patients who are currently not indicated for LVAD support. "IDE approval represents a significant milestone for REVIVE-IT, and we are excited to move forward with this important study, which will allow us to examine the use of LVAD technology earlier in the spectrum of heart failure," said Keith Aaronson, M.D., M.S., medical director of the heart transplant program and Center for Circulatory Support at the University of Michigan Cardiovascular Center (UM-CVC). Aaronson is serving as a co-principal investigator for REVIVE-IT, along with Francis D. Pagani, M.D., Ph.D., surgical director of the heart transplant program and Center for Circulatory Support at the UM-CVC, to whom the REVIVE-IT IDE was issued, and Robert Kormos, M.D., director of the University of Pittsburgh Medical Center (UPMC) Artificial Heart Program and co-director of the UPMC Heart Transplantation Program. The REVIVE-IT pilot study is designed to enroll up to 100 patients in NYHA Class III heart failure from leading heart failure programs across the U.S. Patients will receive either the HeartMate II LVAD or OMM (drug therapy). The primary endpoint for the study is a composite measure of survival, freedom from disabling stroke, and improvement in functional outcomes, as measured by the six-minute walk test.