Varying HV intervals during a wide QRS tachycardia: What is the mechanism?

The article focuses on investigating the mechanism behind varying HV intervals observed during wide QRS tachycardia in a 32-year-old female. Topics include the identification of pathway-to-pathway atrioventricular re-entry tachycardia involving right and left free wall pathways, the role of retrograde conduction via a left lateral accessory pathway, and the implications of these findings for electrophysiological study and ablation therapy in managing recurrent palpitations and arrhythmias.