Prognostic implications of early monomorphic and non–monomorphic tachyarrhythmias in patients discharged with acute coronary syndrome

Background The prognostic implication of early ventricular tachyarrhythmias (VTs) after acute coronary syndrome (ACS) remains unclear. Objective We sought to investigate the clinical outcomes of early monomorphic and non–monomorphic VTs that occur within 48 hours in patients after ACS. Methods We retrospectively reviewed the clinical outcomes of 2033 [mean age 67.0 ± 13.4 years; 1486 (73.1%) men] consecutive patients who presented with ACS from 2004 to 2015. Results A total of 67 (3.3%) and 90 (4.4%) patients developed early monomorphic or non–monomorphic VT, respectively. Killip class IV (odds ratio [OR] 3.05; 95% confidence interval [CI] 1.47–6.36; P P = .01), and left ventricular ejection fraction (OR 0.96; 95% CI 0.94–0.99; P P = .04), ST elevated myocardial infarction (OR 3.53; 95% CI 1.71–7.27; P P P P P P = .04). Conclusion Early monomorphic VT, but not early non–monomorphic VT, independently predicted all-cause mortality in patients with ACS who survived to hospital discharge.