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Clinical and research medicine: Pace and Cardiac Electrophysiology
e0556 Catheter ablation of atrial tachycardia from the noncoronary cusp of the aortic valve
  1. Zhou Xianhui,
  2. He Li,
  3. Taang Baopeng,
  4. Long Deyong,
  5. Li Jinxin,
  6. Zhang Yu,
  7. Li Yaodong
  1. Department of the Echocardiograph, First Affiliated Hospital, Xinjiang Medical University, Urumqi


Objective In this study, we examine the characteristics of anteroseptal Atrial tachycardias (AT) originating from the Noncoronary Cusp (NCC) of the Aortic Valve, and demonstrate the long-term efficacy and safety of targeting the arrhythmias by Catheter Ablation.

Methods From among a cohort of 43 patients with symptomatic focal AT undergoing electrophysiological evaluation, the point of earliest activation was at NCC region in 7 patients.

Results The arrhythmia terminated with <10 seconds of radiofrequency delivery and was successfully eliminated in 7 patients. All patients have been arrhythmia free during follow-up (20±6) months.

Conclusions Catheter ablation from the base of the NCC represents a safe and effective means to eliminate focal AT.

  • Cardiovascular
  • noncoronary cusp of the aortic valve
  • atrial tachycardia

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