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Am J Cardiol. 2005 Sep 1;96(5):611-6.

Effect of statin use within the first 24 hours of admission for acute myocardial infarction on early morbidity and mortality.

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The Ahmanson-UCLA Cardiomyopathy Center, UCLA Division of Cardiology, Los Angeles, California, USA.


We determined the effects of early statin treatment in acute myocardial infarction (AMI) on in-hospital morbidity and mortality. Experimental models of ischemia and reperfusion have shown that statins have early cardioprotective effects. However, the effect of statin use within the first 24 hours of admission on early morbidity and mortality in AMI has not been well studied. Data were collected on 300,823 patients who had AMI in the National Registry of Myocardial Infarction 4. In-hospital events were compared between patients who continued statin therapy received before the index AMI hospitalization (n = 17,118) or newly started statin therapy within the first 24 hours of hospitalization (n = 21,978) and patients who did not receive early statin treatment (n = 126,128) or whose statin therapy was discontinued (n = 9,411). New or continued treatment with a statin in the first 24 hours was associated with a decreased risk of mortality compared with no statin use (4.0% and 5.3% compared with 15.4% no statin). Discontinuation of statin treatment was associated with a slightly increased risk of mortality (16.5%). Early statin use was also associated with a lower incidence of cardiogenic shock, arrhythmias, cardiac arrest, rupture, but not recurrent myocardial infarction. Propensity analysis yielded mortality odds ratios of 0.46 for continued therapy, 0.42 for newly started therapy, and 1.25 for discontinued therapy for matched pairs versus no statin therapy (all p values <0.0001). In conclusion, the use of statin therapy within the first 24 hours of hospitalization for AMI is associated with a significantly lower rate of early complications and in-hospital mortality.

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