Revising treatment guidelines is a continuous process, with authors always monitoring the latest data that needs to be shared with practitioners. What developments prompted the latest updates to the guidelines for care of patients with acute myocardial infarction? Host Dr. Janet Wright visits with Dr. Elliott Antman, professor of medicine at Harvard Medical School, to discuss several of recent refinements that warrant our attention: distinguishing acceptable candidates for beta blocker therapy, as well as management of facilitated and rescue percutaneous coronary intervention.