Paroxysmal supraventricular tachycardia with QRS duration alternans, electrical alternans, and pulsus alternans but without cycle length alternans

研究成果: 雜誌貢獻文章同行評審

摘要

We reported a 60-year-old male patient who had a paroxysmal supraventricular tachycardia with QRS duration alternans (alternation between narrow QRS and wide QRS beats) and electrical alternans, but without any cycle length alternans. In the laboratory, slow-fast atrioventricular nodal reentrant tachycardia was easily induced by an atrial extrastimulus, and the arterial pressure recordings displayed a simultaneous pulsus alternans during tachycardia. The patient also underwent coronary angiography which revealed a total occlusion of the left anterior descending artery. In this report, we have proposed that the QRS duration alternans, electrical alternans and pulsus alternans during the paroxysmal supraventricular tachycardiamay have been due to the prolongation of the effective refractory period of the right bundle branch, caused by myocardial ischemia.

原文英語
頁(從 - 到)192-195
頁數4
期刊Acta Cardiologica Sinica
29
發行號2
出版狀態已發佈 - 三月 2013

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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