Key result
A rate of rise of volumetric temperature >1.5 °C/s measured by microwave radiometry strongly predicted steam pops during irrigated RF ablation (OR 88.8; 95% CI 12-604; P<0.0007).
Why the study?
Does volumetric temperature assessment via microwave radiometry predict steam pops during irrigated RF ablation in a sheep model?
Population
8 sheep undergoing irrigated RF ablation (143 lesions applied at 20-50 W in all chambers)
Comparison
Volumetric temperature assessment via microwave… vs Traditional parameters including power, catheter…
Design
Preclinical
Follow-up
up to 60 seconds per lesion
Authors
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May guide safer ablation if validated; animal data leave clinical translation open.
Does volumetric temperature assessment via microwave radiometry predict steam pops during irrigated RF ablation in a sheep model?
Effect estimate: OR 88.8 (95% CI 12-604)
p-value: p=< 0.0007
Microwave radiometry can accurately predict the occurrence of steam pops during irrigated RF ablation based on the rate of rise and maximum volumetric temperature.
Koruth et al. (2013) studied Irrigated RF ablation (n=8). Microwave radiometry (volumetric temperature assessment) vs. Traditional parameters (power, catheter temperature, impedance) was evaluated on Occurrence of steam pops (OR 88.8, 95% CI 12-604, p=< 0.0007). A rate of rise of volumetric temperature >1.5 °C/s measured by microwave radiometry strongly predicted steam pops during irrigated RF ablation (OR 88.8; 95% CI 12-604; P<0.0007).
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