Key result
Radiofrequency catheter ablation produced tissue temperatures significantly exceeding catheter tip temperatures (P<0.0001), with differences increasing by time, flow, tip length, and orientation.
Why the study?
Does catheter tip temperature accurately reflect tissue temperature during radiofrequency catheter ablation in an in vitro porcine model?
Population
In vitro model using pieces of porcine left ventricle immersed in a bath of isotonic saline-dextrose…
Comparison
Radiofrequency catheter ablation using four… vs Comparisons between different flow conditions…
Design
Preclinical
Authors
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Catheter tip temperature may underestimate tissue heating during RF ablation; leaves open whether adjusted monitoring reduces steam pops in vivo.
Does catheter tip temperature accurately reflect tissue temperature during radiofrequency catheter ablation in an in vitro porcine model?
p-value: p=<0.0001
In vitro RF ablation demonstrates that tissue temperature can significantly exceed catheter tip temperature, especially with flow, longer tips, and perpendicular orientation, risking steam pops.
Kongsgaard et al. (1997) studied Radiofrequency catheter ablation (In vitro model). Radiofrequency catheter ablation vs. Different tip lengths, orientations, and flow rates was evaluated on Difference between catheter tip and tissue temperatures (p=<0.0001). Radiofrequency catheter ablation produced tissue temperatures significantly exceeding catheter tip temperatures (P<0.0001), with differences increasing by time, flow, tip length, and orientation.
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