New research from the Minneapolis Heart Institute Foundation (MHIF) finds that percutaneous coronary intervention for heart attacks can still be beneficial for patients who get to their more than 12 hours after their chest pain has started. Timothy Henry, M.D., lead MHIF researcher and director of cardiology at Cedars-Sinai Medical Center in Los Angeles, presented the study results at the 2015 American College of Cardiology (ACC) conference in San Diego.