Refractory inappropriate sinus tachycardia successfully treated with radiofrequency ablation at the arcuate ridge

Ammar M. Killu, Faisal F. Syed, Puqiang Wu, Samuel J. Asirvatham

Research output: Contribution to journalArticle

8 Scopus citations


Supraventricular tachycardias similar to sinus rhythm are difficult to evaluate and treat with catheter ablation. In addition to inappropriate sinus tachycardia (IST), curative ablation of atrial tachycardia arising from the crista terminalis is well described. We report the case of a 48-year-old woman with multiple failed ablation attempts for IST successfully ablated on the arcuate ridge. Ultrasound and fluoroscopy-guided mapping and ablation of this specific endocavitary anatomic site may be helpful in certain patients with the diagnosis of IST.

Original languageEnglish (US)
Pages (from-to)1324-1327
Number of pages4
JournalHeart rhythm
Issue number8
StatePublished - Aug 1 2012



  • Ablation
  • Arcuate ridge
  • Inappropriate sinus tachycardia
  • Intracardiac echocardiography
  • Postural orthostatic tachycardia syndrome

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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