Biotronik announced the first enrollments in the BIO|GUARD-MI1 study. The study will investigate whether the early detection of cardiac arrhythmias offered by BioMonitor, and subsequent treatments, reduce the likelihood of major adverse cardiovascular events (MACE). The study will, for the first time ever, examine patients with relatively preserved left ventricular ejection fraction (LVEF > 35 percent), who have experienced acute myocardial infarction (AMI).