Ninety Seconds Could be the Optimal Duration for Ventricular Radiofrequency Ablation – Results From a Myocardial Phantom Model

Numerical analysis of thermal impact of intramyocardial capillary blood flow during radiofrequency cardiac ablation

“…In fact, the current ablative technologies are sometimes unable to create thermal lesions deep enough to reach the target. To overcome this drawback, ablations are generally longer than 1 min [34] with the idea of getting the lesion to grow by thermal conduction. Moreover, as in RF hepatic ablation clamping manoeuvres, our results indirectly suggest that some kind of occlusion aimed at temporarily ceasing intramyocardial blood perfusion (and hence cancelling the Q p term) could be employed in the presence of thick ventricular walls (where the target is expected to be quite deep) in order to minimise the heat removal effect and to obtain larger lesions.…”