Figure Legends
Figure 1: Schematic showing lesion geometry with standard (low power long duration) versus high power short duration (HPSD) ablation.
In homogenous tissue, radiofrequency ablation at conventional setting using low to moderate power and relatively long duration results in a smaller zone (yellow arrows) of resistive heating (red circle). The deeper tissue is largely heated because of conductive heating (curved black arrows).
High power and short duration ablation results in a larger zone (yellow arrows) of direct resistive heating (red circles). Due to shorter duration of ablation, there is a shorter temperature decay resulting in less conductive heating. The bidirectional dotted arrows represent irreversible tissue damage (modified from an illustration by Leshem et al. J Am Coll Cardiol EP 2018;4:467–79).
Figure 2: Average radiofrequency (RF) times in high power short duration (HPSD) ablation compared to low power long duration (LPLD) ablation across different studies.
*Values reported as mean +/- standard deviation, except Yavin et al (reported as median with interquartile range).
Figure 3: Average fluoroscopy times in high power short duration (HPSD) ablation compared to low power long duration (LPLD) ablation across different studies.
Values reported as mean +/- standard deviation.