Key result
Internally cooled bipolar RF creates transmural lesions in ~91% of tissue, outperforming a microwave device.
Why the study?
Does an internally cooled, bipolar radiofrequency device improve lesion transmurality compared to a microwave device in a beating heart pig model?
Does an internally cooled, bipolar radiofrequency device improve lesion transmurality compared to a microwave device in a beating heart pig model?
An internally cooled, bipolar radiofrequency device can reliably create transmural lesions on beating heart tissue up to 4-mm thick, outperforming a microwave device in a porcine model.
No takes yet. Share an insight, caveat, or question.
May support cooled bipolar RF for transmural lesions in beating hearts; leaves open human translation and safety.
Lee et al. (2009) studied Atrial fibrillation (n=11). Internally cooled, bipolar radiofrequency device vs. Guidant Flex 4 microwave device was evaluated on Lesion width, depth, and transmurality. An internally cooled, bipolar radiofrequency device created transmural lesions in 91% of tissue up to 4-mm thick after 50 seconds, performing better than a microwave device.
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