TUCSON, Ariz.--(BUSINESS WIRE)--October 15th marks the second anniversary of the FDA approval of the CardioWest™ temporary Total Artificial Heart (TAH-t). The TAH-t is the world’s first and still the only FDA-approved temporary Total Artificial Heart. The artificial heart is used as a bridge to transplant for transplant-eligible patients who are dying from end-stage biventricular heart failure.