Reentrant ventricular outflow tract tachycardia arising from focal scar detected by delayed enhancement magnetic resonance imaging

Yoshihiro Yamashina, Tetsuo Yagi, Akio Namekawa, Akihiko Ishida, Hirokazu Sato, Takashi Nakagawa, Manjirou Sakuramoto, Eiji Sato, Tomoyuki Yambe

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A 58-year-old man was referred to our emergency room with hemodynamically unstable sustained ventricular tachycardia (VT). The morphology of the VT exhibited a left bundle branch block and inferior axis deviation. He had no past history of cardiovascular disease. Echocardiography, cardiac catheterization, cardiac biopsy, gallium scintigram, myocardial scintigram, T1,T2-weighted magnetic resonance imaging (MRI), and gadolinium-enhanced cine MRI did not detect any structural heart disease or abnormal cardiac function. However, delayed-enhancement MRI (DE-MRI) detected a focal intramural scar within the septal ventricular outflow tract. An electrophysiological study revealed a sustained VT with several morphologies and the entrainment phenomenon. Radiofrequency catheter ablation to the site corresponding to the focal scar detected by DE-MRI successfully eliminated the VT. (PACE 2012;35:e349-e352)

Original languageEnglish
JournalPACE - Pacing and Clinical Electrophysiology
Volume35
Issue number12
DOIs
Publication statusPublished - 2012 Dec 1

Keywords

  • VT
  • ablation
  • electrophysiology-clinical
  • imaging
  • mapping

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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