Intracardiac thrombi fluttering like hair in the wind at VT ablation

Abstract Introduction Intracardiac echocardiography (ICE) reveals mobile thrombus on implantable electronic device leads in some patients undergoing electrophysiologic procedures. Methods ICE was performed in a patient undergoing ventricular tachycardia (VT) ablation. Results ICE showed extensive mobile thrombi on the implantable cardioverter defibrillator lead. Radiofrequency catheter ablation of VT from perimitral scar was safely performed via a retrograde aortic approach. After the procedure, chronic anticoagulation was initiated. CT‐angiography of the chest 2 months later showed no pulmonary emboli. Conclusions The significance of these thrombi, as related to chronic pulmonary embolization, warrants further study.