Unusual polymorphic ventricular tachycardia originating from the pulmonary artery

Dae In Lee, Sang Weon Park, Hyungdon Kook, Woohyeun Kim, Dong Hyeok Kim, Sunki Lee, Suk Kyu Oh, Young Hoon Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We report a case about a 27-year-old healthy young male who developed syncope during exercise, which was subsequently identified to be attributable to non-sustained polymorphic ventricular tachycardia (VT). Occurrence of polymorphic VT was neither related to a prolonged QT interval nor a fixed short coupling interval. Standard examinations including echocardiography, coronary angiography, isoproterenol infusion study, and cardiac MRI showed no structural heart disease. On the electrophysiology study, activation mapping revealed that a discrete potential preceded the premature ventricular complex (FVC) triggered polymorphic VT, which was recorded just above the pulmonary valve. After radiofrequency ablation at this area, FVC and polymorphic VT disappeared and did not recur after a 2 month follow up.

Original languageEnglish
Pages (from-to)119-122
Number of pages4
JournalKorean Circulation Journal
Issue number2
Publication statusPublished - 2013 Feb
Externally publishedYes


  • Pulmonary artery
  • Radiofrequency catheter ablation
  • Ventricular tachycardia

ASJC Scopus subject areas

  • Internal Medicine
  • Cardiology and Cardiovascular Medicine


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