Abstract
BackgroundEvidence regarding the duration of anticoagulation (AC) therapy for left ventricular thrombus (LVT) is lacking. This study aims to evaluate the rate and risk factors for LVT recurrence in patients with Anterior ST-Segment elevation Myocardial Infarction (STEMI) complicated by LVT. MethodsThis was a retrospective analysis of patients with Anterior STEMI complicated by LVT and reduced ejection fraction (<35 %) from 2010 to 2020. Patients with atrial fibrillation and hypercoagulable state were excluded. Recurrence of LVT was defined as a new LVT on transthoracic echocardiography (TTE) after interval resolution and AC discontinuation. Demographics, comorbidities, guideline directed medical therapy, TTE, and angiographic characteristics were assessed and compared in patients with and without LVT recurrence. Results87 patients met the inclusion criteria. Nine (10.3 %) had LVT recurrence of which three (33.3 %) had cardioembolic events. More patients with recurrence had ventricular aneurysm/scarring (33 % vs 10.3 %) and multi-vessel disease (22.2 % vs 9 %). ConclusionThis study reveals that a portion of patients with Anterior STEMI complicated by LVT are at a higher risk of recurrence after initial resolution and AC discontinuation. Larger prospective trials are needed to re-address the appropriate duration of anticoagulation.
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