Two pig hearts were successfully transplanted into brain-dead people

The procedure is a step toward future clinical trials

photo of the surgical team at NYU Langone Health transplanting a pig heart into a recently deceased patient

A surgical team at NYU Langone Health transplants a pig heart into a recently deceased patient on July 6, 2022.

Joe Carrotta for NYU Langone Health

Pig hearts beat for three days inside the chests of two brain-dead patients who were kept alive using ventilators.