Atrial Tachycardia Originating from Crista Terminalis
Atrial tachycardia may be caused by abnormal automaticity, re-entry, or triggered activity. Regardless of the underlying mechanism, it has been observed that, although tachycardia may theoretically arise from any atrial zone, the origin of the arrhythmia is not random, but the ectopic focus or re-entry circuit is frequently located in certain specific areas of the atria [1–4]. It has been suggested that the majority of right atrial tachycardias originate from the crista terminalis (CT) and, accordingly, the term “cristal tachycardia” has been introduced [1–3].
KeywordsCatheter Ablation Atrial Flutter Sinus Node Atrial Tachycardia Successful Ablation
Unable to display preview. Download preview PDF.
- 2.Lesh MD, Kaiman JM, Olgin JE (1997) An electrophysiologic approach to catheter ablation of atrial flutter and tachycardia: from mechanism to practice. In: Singer I (ed) Interventional electrophysiology. Williams and Wilkins, Baltimore, pp 347–382Google Scholar
- 3.Kaiman JM, Olgin JE, Karch MR, Hamdan M, Lee RJ, Lesh MD (1998) “Cristal tachycardias”: origin of right atrial tachycardia from the crista terminalis identified by intracardiac echocardiography. J Am Coll Cardiol 31:451–459Google Scholar
- 9.Shenasa H, Merril JJ, Hamer ME, Wharton JM (1993) Distribution of ectopic atrial tachycardias along the crista terminalis: an atrial ring of fire? Circulation 88 [Suppl I]:I–29 (abstr)Google Scholar