Intramyocardial Hematoma After Radiofrequency Catheter Ablation.

Abstract

of the hematoma, plication of the right ventricle and the inferior tricuspid valve annulus, right-sided modified cryoablation maze procedure, cryoablation of cavotricuspid isthmus, and right reduction atrioplasty. Repeat echocardiogram showed resolution (Figure D). IMH is a rare complication after ablation and is usually associated with transseptal puncture with continued anticoagulation. Because the IMH was contained within the myocardium and did not communicate with the ventricular chamber or the pericardium in the present case, the likely mechanism was intramyocardial arteriolar bleeding in the myocardial free wall in the setting of an atrialized, thinned right ventricle that is common in Ebstein anomaly. This highlights the importance of recognizing a rare complication related to the underlying anatomy.