Ventricular tachycardia terminates via prepotential exit block caused by local tissue refractoriness, which requires a critical conduction time for premature ventricular complexes to manifest.
Discrete prepotentials in the aortic sinuses of Valsalva are reliable targets for ablation of idiopathic PVCs and VT, with exit block demonstrating the critical conduction time required.
Absolute Event Rate: 0% vs 0%
Discrete prepotentials (PPs) mapped within the aortic sinuses of Valsalva are considered reliable targets for the ablation of idiopathic premature ventricular complexes (PVCs) and ventricular tachycardias. A critical conduction time is required for the PVC to manifest, as evidenced by a distinct isoelectric segment between the discrete PPs and the ventricular electrograms, consistent with the limitations imposed by the local refractoriness of the tissue at the exit site.
Ozeke et al. (Sun,) reported a other. Ventricular tachycardia terminates via prepotential exit block caused by local tissue refractoriness, which requires a critical conduction time for premature ventricular complexes to manifest.