PMID: 9448879Aug 1, 1997Paper

Inappropriate sinus tachycardia (IST): management by radiofrequency modification of sinus node

Australian and New Zealand Journal of Medicine
S JayaprakashJ Vohra

Abstract

Inappropriate sinus tachycardia (IST) is a rare form of supraventricular arrhythmia. It can cause disabling symptoms and may be refractory to medical treatment. In symptomatic drug refractory patients, sinus node excision or total ablation of the sinus node with permanent pacemaker implantation was the only therapeutic option. Recently, radiofrequency (RF) modification of the sinus node has been reported to be an effective treatment for this condition. To present our experience with sinus node modification using RF energy in the management of IST. Between 1989 to 1996 three patients (two females and one male), aged 28-36 years were diagnosed with symptomatic IST. All had failed multiple drugs and hence underwent sinus node modification using RF. In the first two patients, the site of RF application was guided by anatomical landmarks using fluoroscopy to localise the presumed most superior portion of the crista terminalis and also the earliest site of atrial activation. In the third patient, a 20 pole electrode catheter was used to map the crista terminalis and guide the ablation. Success was defined by 20-30% reduction in the heart rate with normal atrial activation sequence after ablation. The three patients described here had...Continue Reading

References

Jul 1, 1992·The American Journal of Cardiology·A A de PaolaO P Portugal
Feb 1, 1984·Journal of the American College of Cardiology·R YeeG J Klein
Sep 1, 1994·Pacing and Clinical Electrophysiology : PACE·L E WaspeS I Stark

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Citations

Jun 17, 2003·Journal of Cardiovascular Pharmacology and Therapeutics·Shamil Yusuf, A John Camm
Oct 28, 2005·Clinical Cardiology·David Spodick
Apr 12, 2014·Journal of the American Heart Association·Victor C NwazueSatish R Raj
Oct 14, 2005·Pacing and Clinical Electrophysiology : PACE·Peter A BradyWin K Shen
Jul 21, 2005·Clinical Cardiology·Shamil Yusuf, A John Camm
Nov 13, 2020·Journal of Cardiovascular Electrophysiology·Khalil El Gharib

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