Higher contact force, energy setting, and impedance rise during radiofrequency ablation predicts charring: New insights from contact force-guided in vivo ablation.
Hisaki MakimotoAndreas MetznerRoland Richard TilzTina LinChristian-H HeegerAndreas RilligShibu MathewChristine LemešErik WissnerKarl-Heinz KuckFeifan OuyangPublished in: Journal of cardiovascular electrophysiology (2017)
gIR was noted with higher applied CFs after 20 seconds of RFA. This impedance rise may be avoided by keeping the applied CF under 26.9 g with negative predictive value of 95%. Our data suggested that gIR may be related to the incidence of charring.