The U.S. FDA has granted premarket approval for Transmedics Group Inc.’s OCS heart system for use with organs from donors after circulatory death (DCD). The approval expands on a prior FDA approval of the device for use with organs from donors after brain death in September 2021. Andover, Mass.-based Transmedics said its system can now be used for ex vivo reanimation, functional monitoring, and beating-heart preservation of donation-after-circulatory-death hearts.