A catheter-mounted balloon includes an inflatable chamber defining a volume expandable from a deflated state to an inflated state, the inflatable chamber having a distal transition portion, a proximal transition portion, and a cylindrical body portion disposed between the distal transition portion and the proximal transition portion. The cylindrical body portion of the inflatable chamber includes a pleat zone having a pleat when the inflatable chamber is in the deflated state. The catheter-mounted balloon further includes an electrode disposed along a wall of the inflatable chamber. The pleat traverses the electrode such that is electrode is pleated as well.
