Abstract
Left ventricular (LV) dilatation after myocardial infarction (MI) is a major predictor of prognosis and identifies which patients will develop heart failure. Left ventricular dilatation or remodeling starts immediately after MI and progresses in the chronic phase of heart failure. Factors influencing remodeling, such as infarct size and neurohumoral activation, including the sympathetic and renin-angiotensin system, are discussed. Remodeling can be affected by reduction of infarct size and inhibition of neurohumoral activation. The effect of thrombolysis, beta-blockade, and angiotensin-converting enzyme (ACE) inhibition in the acute phase after MI and in the chronic phase of heart failure on remodeling are discussed. On the basis of beneficial effects of ACE inhibition and beta-blockade in acute MI and in chronic heart failure, a treatment strategy is proposed in which both ACE inhibition and beta-blockade are started early after MI. Depending on infarct size and ventricular function, continued treatment in the chronic phase of heart failure must be considered.
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