Identifying the true origin of sustained monomorphic ventricular tachycardia associated with dilated-phase hypertrophic cardiomyopathy: A case of successful catheter ablation

Publication date: Available online 14 July 2015 Source:Journal of Arrhythmia Author(s): Hiroshi Kawakami , Takayuki Nagai , Akira Fujii , Teruyoshi Uetani , Kazuhisa Nishimura , Katsuji Inoue , Jun Suzuki , Kazuhiro Satomi , Takafumi Okura , Jitsuo Higaki , Akiyoshi Ogimoto This case report describes sustained monomorphic ventricular tachycardia (VT) caused by a large epicardial scar, related to dilated-phase hypertrophic cardiomyopathy mimicking VT originating from the apical septum. VT resolved with epicardial catheter ablation. The exit of the VT circuit suggested that a 12-lead electrocardiogram can be remote with respect to the critical isthmus in this case. In patients with structural heart disease, it is difficult to identify the VT reentrant circuit by surface electrocardiography, which shows only the exit site. VT originating in the epicardium should be considered, even if the suspected origin is another ventricular site.
Source: Journal of Arrhythmia - Category: Cardiology Source Type: research