Patients with left ventricular dysfunction (LVD) are at increased risk for dying suddenly of cardiac causes. The most common causes of LVD are coronary artery disease (CAD) and myocardial infarction (MI). Aggressive intervention following MI is essential for minimizing the myocardial damage that leads to LVD and the subsequent risk for heart failure and sudden cardiac death. This article describes practical algorithms for managing the patient post MI to minimize such risks. The degree of LVD is a key factor for determining clinical management strategies in the patient post MI. Risk factor reduction and selective neurohormonal blockade, especially with angiotensin-converting enzyme inhibitors, are usually recommended in the presence or absence of LVD, along with early use of a beta blocker. In patients with LVD, more aggressive intervention includes extended use of a beta blocker. In cases of LVD progressed to heart failure, the mixed beta and alpha blocker carvedilol has improved outcomes significantly. In clinical trials, carvedilol has been demonstrated to have antiarrhythmic activity, a property that offers protection against sudden arrhythmic death in high-risk patients with LVD. Addition of an aldosterone antagonist is also advised in patients with heart failure. In selected patients with reduced ejection fractions, use of surgical/catheter treatment and device therapy offers further benefits.