Changes in QRS morphology during antidromic atrioventricular reentrant tachycardia.

We report a case of a 44-year-old male who underwent an electrophysiological study for symptomatic supraventricular tachycardia (SVT) with wide QRS complex. The SVT was diagnosed as an antidromic atrioventricular reentrant tachycardia (AVRT) via antegrade conduction of left-sided accessory pathway (AP). However, the QRS morphology changed during the SVT, and then the SVT was terminated spontaneously. The mapping of AP was performed during sinus rhythm, and the radiofrequency application successfully eliminated the AP, which rendered tachycardias non-inducible. This was a rare case of antidromic AVRT during which the QRS morphology changed. © 2024 Wiley Periodicals LLC.

Citation

Kohei Ukita, Yasuyuki Egami, Hiroaki Nohara, Shodai Kawanami, Akito Kawamura, Koji Yasumoto, Masaki Tsuda, Naotaka Okamoto, Yasuharu Matsunaga-Lee, Masamichi Yano, Masami Nishino. Changes in QRS morphology during antidromic atrioventricular reentrant tachycardia. Pacing and clinical electrophysiology : PACE. 2024 May 31

PMID: 38818855

search → result