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(A) Charge (diffuse red cloud) will disperse around a kinked guidewire without (B) selective denudation of insultation from the inner-curve (“elbow”), which focuses charge (focal red cloud). (C) Even after focal denudation, blood ions will disperse charge. (D) Flooding the field with nonionic dextrose confines radiofrequency energy to the lacerating surface contacting the leaflet.
