Key result
Microwave catheter ablation produced a mean isotherm of irreversible tissue injury that was not significantly different from radiofrequency ablation (54.4°C vs 53.6°C).
Why the study?
Does microwave catheter ablation generate different temperature profiles or larger lesions compared to radiofrequency ablation in an in vitro porcine myocardium model?
Population
In vitro model of perfused and superfused porcine right ventricular free wall
Comparison
Microwave catheter ablation using monopolar and… vs Radiofrequency catheter ablation using a…
Design
Preclinical
Authors
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Comparable thermal injury thresholds in vitro support further microwave development; leaves open in vivo lesion advantages and clinical translation.
Does microwave catheter ablation generate different temperature profiles or larger lesions compared to radiofrequency ablation in an in vitro porcine myocardium model?
Absolute Event Rate: 54.4% vs 53.6%
p-value: p=not significantly different
In an in vitro porcine model, microwave ablation demonstrates a similar thermal mechanism of tissue injury to radiofrequency ablation, with the potential to heat a greater volume of tissue when using efficient antennas.
Whayne et al. (1994) studied Myocardial ablation (n=19). Microwave (MW) catheter ablation vs. Radiofrequency (RF) catheter ablation was evaluated on Mean isotherm of irreversible tissue injury (p=not significantly different). Microwave catheter ablation produced a mean isotherm of irreversible tissue injury that was not significantly different from radiofrequency ablation (54.4°C vs 53.6°C).
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