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Peer-reviewedCC BY-NC-NDInternal Medicine

Successful Catheter Ablation of Basal Crux Ventricular Tachycardia with Right Bundle Branch Block Morphology in a Patient with Dilated Cardiomyopathy

  • Takeshi Ishihara
  • Nobuhiro Takasugi
  • Yu Yasuda
  • Maya Ishiguro
  • Hiroyuki Okura
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Abstract

We report the first case of ventricular tachycardia (VT) originating from the cardiac crux in a patient with dilated cardiomyopathy (DCM). The patient presented with sustained VT with right bundle branch block (RBBB) morphology. Although the RBBB morphology typically suggests an apical crux origin, which is often difficult to reach with ablation catheters, successful catheter ablation was achieved within the proximal middle cardiac vein. This case demonstrates that the surface ECG morphology can be modified by underlying structural heart disease.

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Cite

BibTeXRIS
BibTeX
@article{ishihara2026successful,
  title = {{Successful Catheter Ablation of Basal Crux Ventricular Tachycardia with Right Bundle Branch Block Morphology in a Patient with Dilated Cardiomyopathy}},
  author = {Takeshi Ishihara and Nobuhiro Takasugi and Yu Yasuda and Maya Ishiguro and Hiroyuki Okura},
  journal = {Internal Medicine},
  year = {2026},
  month = jul,
  doi = {10.2169/internalmedicine.6569-25},
  url = {https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_6569-25/_article},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Successful Catheter Ablation of Basal Crux Ventricular Tachycardia with Right Bundle Branch Block Morphology in a Patient with Dilated Cardiomyopathy
AU  - Takeshi Ishihara
AU  - Nobuhiro Takasugi
AU  - Yu Yasuda
AU  - Maya Ishiguro
AU  - Hiroyuki Okura
PY  - 2026
DA  - 2026/07/18
JO  - Internal Medicine
DO  - 10.2169/internalmedicine.6569-25
UR  - https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_6569-25/_article
AB  - We report the first case of ventricular tachycardia (VT) originating from the cardiac crux in a patient with dilated cardiomyopathy (DCM). The patient presented with sustained VT with right bundle branch block (RBBB) morphology. Although the RBBB morphology typically suggests an apical crux origin, which is often difficult to reach with ablation catheters, successful catheter ablation was achieved within the proximal middle cardiac vein. This case demonstrates that the surface ECG morphology can be modified by underlying structural heart disease.
SN  - 1349-7235
SN  - 0918-2918
ER  -