Subvalvular catheter ablation of the cavotricuspid isthmus in a patient with Ebstein's anomaly and tricuspid valve replacement
نویسندگان
چکیده
Introduction Ebstein’s anomaly (EA) is a congenital malformation of the tricuspid valve that often requires tricuspid valve replacement (TVR). EA patients have a high burden of atrial tachycardia owing to a combination of prior surgical incisions and abnormal atrial hemodynamics. Catheter ablation for atrial tachycardia, especially when the cavotricuspid isthmus (CTI) is a critical component of the circuit, may be quite challenging due to positioning of the bioprosthetic valve over various portions of this isthmus. Here we present a case of successful catheter ablation that required needle puncture to reach an otherwise inaccessible portion of the CTI for a patient with EA after surgical TVR.
منابع مشابه
Successful Ablation of Cavotricuspid Isthmus-dependent Atrial Flutter Guided by Contact Force Vector in a Patient After a Tricuspid Valve Replacement
A 46-year-old man after a tricuspid valve replacement due to traumatic severe tricuspid regurgitation developed cavotricuspid isthmus-dependent counterclockwise atrial flutter. During a linear ablation using a contact force-sensing irrigated ablation catheter, the flutter could be terminated by a radiofrequency application within a deep pouch just below the bioprosthetic tricuspid valve.
متن کامل[Lesions produced by radiofrequency ablation of the cavotricuspid isthmus in an experimental model].
INTRODUCTION AND OBJECTIVES Experimental studies have shown that deeper and wider lesions (up to 10 mm long or deep) can be safely created using an 8 mm or irrigated tip catheter for ablation to treat atrial flutter. However, potential damage to the tricuspid valve or inferior cava vein has not been systematically evaluated. PATIENTS AND METHOD The cavotricuspid isthmus was ablated in 26 pigs...
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INTRODUCTION AND OBJECTIVES The development of ablation techniques for supraventricular arrhythmias in patients with Ebstein's anomaly have led to a need for better understanding of the morphology of the triangle of Koch and the position of the atrioventricular (AV) node in this structure. METHODS The study involved 17 human hearts: 11 with Ebstein's anomaly (age range: 37 weeks' gestation to...
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BACKGROUND Ebstein's anomaly is a complex malformation. Justification of a procedure in mildly symptomatic adults is debatable: repair techniques are demanding and valve replacement is associated with poorer outcome. OBJECTIVES We report our initial experience with the cone procedure versus medical follow-up. METHODS Patients aged≥15years with Ebstein's anomaly were enrolled during 2007-201...
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OBJECTIVES The purpose of this study was to prospectively evaluate preexisting partial isthmus block in the context of an electrophysiologically directed linear ablation strategy for typical atrial flutter (AF). BACKGROUND Double potentials (DPs) separated by an isoelectric interval have been recognized as markers of local block. However, the presence and significance of DPs in the cavotricus...
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