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  • Title: Left ventricular dilatation and high-grade ventricular arrhythmias in the first year after myocardial infarction. CATS Investigators. Captopril and Thrombolysis Study.
    Author: Dambrink JH, Beukema WP, Van Gilst WH, Peels KH, Lie KI, Kingma JH.
    Journal: J Card Fail; 1994 Oct; 1(1):3-11. PubMed ID: 9420628.
    Abstract:
    Progressive left ventricular dilatation is an important determinant of prognosis after myocardial infarction. The association of this process with the occurrence of ventricular arrhythmias is less well established. Of 153 patients with a first anterior myocardial infarction treated with thrombolytic therapy, 34 (22%) had high-grade ventricular arrhythmias (Lown 4A and B) during Holter monitoring after 1 year. Patients with high-grade ventricular arrhythmias had a larger end-systolic volume (38 +/- 12 vs 25 +/- 11 mL/m2; P < .001) at hospital discharge and more left ventricular dilatation (10 +/- 18 vs 1 +/- 9 mL/m2; P = .011) during the follow-up period. Increased end-systolic volume at discharge and subsequent dilatation proved to be independent predictors of high-grade ventricular arrhythmias. Six patients died suddenly during the first 12 months after myocardial infarction. Four of these patients had an enlarged end-systolic volume (> 22 mL/m2) at discharge, and the three patients who died suddenly after 3 months showed a significant increase in end-systolic volume from discharge to 3 months compared to survivors (16 +/- 6 vs 2 +/- 9; P = .008). Left ventricular remodeling after myocardial infarction is an independent predictor of the occurrence of ventricular arrhythmias late after myocardial infarction.
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