Ozzy Osbourne's cause of death has been confirmed-but what is an acute myocardial infarction? It was one of three things listed on the 76-year-old Black Sabbath rocker's death certificate.

Ozzy Osbourne's cause of death has reportedly been determined. The former Black Sabbath frontman and reality TV personality died of "out of hospital cardiac arrest" and "acute myocardial infarction," with coronary artery disease and Parkinson's disease with autonomic dysfunction listed as "joint causes at age 76 on July 22.