Ribes Francisco, Martínez-Brótons Ángel, Ferrero-De-Loma-Osorio Ángel, Bondanza Lourdes, Albiach Cristina, Marcos-Garcés Víctor, Ruiz-Granell Ricardo
Arrhythmia Unit Department of Cardiology Hospital Clínico Universitario Valencia Valencia Spain.
Instituto de Investigación Sanitaria INCLIVA Valencia Spain.
J Arrhythm. 2020 Mar 24;36(3):542-543. doi: 10.1002/joa3.12334. eCollection 2020 Jun.
Electrocardiogram showing a regular wide QRS tachycardia with left branch block (LBBB) like in morphology at 200 beats per minute (bpm). During electrophysiology study, it suddenly gets narrow and faster. What is the mechanism of the switch from a broad complex to a narrow complex tachycardia?
心电图显示为规则的宽QRS心动过速,形态类似左束支传导阻滞(LBBB),心率为每分钟200次(bpm)。在电生理研究过程中,其突然变窄且心率加快。从宽QRS心动过速转变为窄QRS心动过速的机制是什么?