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Endocardial cryoablation using a T-shaped cryoprobe to connect the mitral isthmus line to the mitral annulus. The ends of the mitral isthmus and inferior connecting lesions that were created with the bipolar RF clamp are marked with methylene blue in order to provide starting points for this cryoablation, as well as subsequent ones designed to completely isolate the posterior left atrium. RF, radiofrequency.
