0294: Symptomatic AF but no silent AF is associated with an increased occurrence of ventricular arrhythmias after acute myocardial infarction

Objectives The aims of our study were to assess ventricular tachycardia or fibrillation (VT or VF) occurrence after AMI and to analyse the relationship with either symptomatic or silent AF occurrence. Background Silent or symptomatic AF are known to be common after AMI and to impair patients prognosis. But the reasons of this worse prognosis remain discussed. Methods 849 consecutive AMI were prospectively analyzed by continuous ECG monitoring (CEM) during the first 48 hours after admission. All AF, VT or VF episodes were confirm by standard ECG and sytematically reviewed by two investigators. The population was studied into three groups: No AF, Silent AF, and symptomatic AF after AMI. Results Forty five patients (5%) developed symptomatic AF and one hundred and thirty five developed silent AF (15.9%). Compared with the no AF group, patients with AF were markedly older 80 (67-85) and 81(71-88) vs. 62 (53-75) years; with p Conclusion Symptomatic AF is very common after AMI and impacts patient’s outcome with more frequent episodes of VT or VF and higher inhospital mortality (17.8%). Our large prospective study suggests that VT or VF occurrence associated with symptomatic AF could be linked with the higher mortality in this population.