Maryland doctors transplant pig’s heart into human patient in medical first

Patient is doing well three days after the highly experimental surgery, doctors say, though it's too soon to know if it is a success

In a medical first, doctors in Maryland have transplanted a genetically modified pig's heart into a human patient in a last-ditch effort to save his life.

Doctors at the University of Maryland medical center said Monday that the patient was doing well three days after the highly experimental surgery, though it is too soon to know if the operation has been a success.