Ventriculoatrial (VA) interval prolongation during an orthodromic atrioventricular (AV) reentrant tachycardia (AVRT) with appearance of a bundle branch block (BBB) ipsilateral to an AV accessory pathway (AP) is well known… Click to show full abstract
Ventriculoatrial (VA) interval prolongation during an orthodromic atrioventricular (AV) reentrant tachycardia (AVRT) with appearance of a bundle branch block (BBB) ipsilateral to an AV accessory pathway (AP) is well known as Coumel’s sign. Otherwise, VA interval over a slant type of AP different from a perpendicular type along an annulus is considered to be changeable depending on ventricular pacing sites.
               
Click one of the above tabs to view related content.