Why the study?
Does contact force-time integral (FTI) predict radiofrequency lesion size in an in vitro contractile model?
Population
In vitro contractile bench model simulating the beating heart using bovine skeletal muscle
Comparison
Radiofrequency energy delivery with variable… vs Constant contact at 20 g
Design
Preclinical
Key result
In an in vitro contractile model, the contact force-time integral correlated linearly with radiofrequency lesion volume (P<0.0001 for 20 and 40 W).
Authors
Loading...
Supports FTI for lesion prediction in models; leaves open clinical validation before guiding ablation.
Does contact force-time integral (FTI) predict radiofrequency lesion size in an in vitro contractile model?
p-value: p=<0.0001
In an in vitro contractile model, radiofrequency lesion size correlates linearly with the contact force-time integral, demonstrating that constant contact produces larger lesions than intermittent contact despite identical peak forces.
Shah et al. (2010) studied Radiofrequency ablation (in vitro model). Radiofrequency energy delivery with variable contact force vs. Constant contact vs variable vs intermittent contact was evaluated on Lesion volume and its correlation with contact force-time integral (FTI) (p=<0.0001). In an in vitro contractile model, the contact force-time integral correlated linearly with radiofrequency lesion volume (P<0.0001 for 20 and 40 W).