Why the study?
The study was conducted to explore the effects of baseline impedance and power on radiofrequency ablation lesion characteristics and their correlation with steam pops using STSF catheters.
In an ex vivo porcine model, higher baseline impedance during radiofrequency ablation increases lesion size but also significantly increases the risk of steam pops at high power settings.
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Ex vivo impedance-power effects on RFA lesions are hypothesis-generating; prospective in vivo studies required before clinical adoption.
Qu et al. (2022) studied this question.
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