Key result
Impedance and intramyocardial temperature show similar recovery times after bipolar radiofrequency ablation.
Why the study?
It was uncertain why impedance decline is related to steam-pop during RF ablation and whether impedance decline correlates to intramyocardial temperature.
Does impedance recovery correlate with intramyocardial temperature recovery after bipolar radiofrequency ablation in a porcine model?
Design
Ex vivo experimental study
Authors
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Impedance may surrogate temperature recovery after bipolar ablation in animals; leaves open clinical utility for steam-pop prevention.
Does impedance recovery correlate with intramyocardial temperature recovery after bipolar radiofrequency ablation in a porcine model?
Impedance recovery closely mirrors intramyocardial temperature recovery after bipolar RF ablation, supporting impedance monitoring as a reliable surrogate for tissue temperature to prevent steam-pops.
Kasai et al. (2023) studied Radiofrequency ablation (n=7). Bipolar radiofrequency ablation was evaluated on Recovery process of impedance and its correlation to intramyocardial temperature (IMT). Recovery time constants for impedance (100.1 ± 34.5 s) and intramyocardial temperature (108.7 ± 27.3 s) after bipolar radiofrequency ablation showed symmetric shapes with no statistical difference.
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