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During a radiofrequency catheter ablation, we were unable to pass balloons.We tried multiple times with multiple balloons and guides.There was resistance felt at a usual spot in the guide catheter.Wire was removed and wiped and reinserted.After aborting the procedure and inspecting the run through.014 x 180cm intervention wire it was found that at a transition point on the wire was where everything was getting stuck.This was tested with several balloons, and they all got stuck.We tried a new wire and found that although the transition point could be felt balloons crossed freely.
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