Why the study?
Does radiofrequency ablation interrupt sustained ventricular tachycardia related to the mitral isthmus in a patient with Chagas' disease?
Does radiofrequency ablation interrupt sustained ventricular tachycardia related to the mitral isthmus in a patient with Chagas' disease?
While radiofrequency ablation can successfully interrupt mitral isthmus-related ventricular tachycardia in Chagas' disease, it carries a severe risk of fatal thromboembolic complications.
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Fatal mitral annulus thrombosis after successful ablation warrants extreme procedural caution in Chagas disease; this case leaves open the approach's safety.
SCANAVACCA, M., et al. : Radiofrequency Ablation of Sustained Ventricular Tachycardia Related to the Mitral Isthmus in Chagas' Disease. This case report describes the electrophysiological findings of a 62‐year‐old patient with chronic Chagas' disease and two distinct morphologies of sustained ventricular tachycardia that involved a mitral isthmus. Multiple RF applications were necessary to obtain a bidirectional conduction block in the mitral isthmus that was related to the interruption of both tachycardias. After the procedure, the patient presented massive cerebral infarction that progressed to coma and death. Autopsy showed acute and old lesions at the mitral isthmus and recent mitral annulus thrombosis.
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Scanavacca et al. (2002) studied this question.
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