Left ventricular thrombus recurrence after anticoagulation discontinuation

Area of Science:

• Cardiology
• Cardiovascular Medicine
• Thrombosis Research

Background:

• Left ventricular thrombus (LVT) is a complication of Anterior ST-segment elevation myocardial infarction (STEMI).
• Optimal anticoagulation (AC) duration for LVT remains unclear.
• Limited evidence exists on LVT recurrence after AC discontinuation in STEMI patients.

Purpose of the Study:

• To evaluate the rate of LVT recurrence in Anterior STEMI patients.
• To identify risk factors associated with LVT recurrence.
• To inform clinical decisions regarding anticoagulation therapy duration.

Main Methods:

• Retrospective analysis of 87 Anterior STEMI patients with LVT and reduced ejection fraction (<35%).
• Exclusion of patients with atrial fibrillation or hypercoagulable states.
• Comparison of demographic, comorbidity, treatment, and imaging characteristics between patients with and without LVT recurrence.

Main Results:

• Left ventricular thrombus recurrence was observed in 10.3% of patients.
• Patients with recurrence were more likely to have ventricular aneurysm/scarring (33% vs 10.3%) and multi-vessel disease (22.2% vs 9%).
• Three of nine patients with recurrence (33.3%) experienced cardioembolic events.

Conclusions:

• A subset of Anterior STEMI patients with LVT face a significant risk of recurrence after discontinuing anticoagulation.
• Ventricular aneurysm and multi-vessel disease are potential risk factors for LVT recurrence.
• Prospective trials are essential to determine the appropriate duration of anticoagulation therapy for LVT.