Wednesday, September 26, 2018

Studying Localized Drivers in Persistent Atrial Fibrillation


Dr. Sanjiv M. Narayan helped spearhead medical results that led to a technology acquired by Abbott Laboratories. Currently a Stanford University professor of medicine, Dr. Sanjiv M. Narayan has been at the forefront of research that examines the mechanisms governing persistent atrial fibrillation.

Previously, the drivers of persistent atrial fibrillation have not been easily traceable or understood. For a recent clinical trial, the research team operated on the hypothesis that putative AF drivers may have a dynamic synergy with disorganized zones across small time frames. They examined these types of interactions across long periods of time with an emphasis on areas where mapping methods were able to indicate regions of termination via ablation. 

Among the 55 patients who participated in the study, AF termination points via ablation had organized activation that varied across different time points when interacting with fibrillatory waves and/or organized zones, but showed more consistent recurrence in conserved spatial areas. Researchers concluded these results show that mapping the atrium in each patient undergoing AF ablation may help to understand the interaction between important sites (AF drivers) and hence guide ablation. These tools should be integrated with other AF mapping methods.