as apex electrode pad 10 is peeled off of box or liner 704 liner 704 rolls forward and exposes a pull tab 23 of sternum electrode pad 20 so that the sternum electrode pad 20 is ready to be removed from liner 704 after placement of apex electrode pad 10 is placed against the patient in accordance with any of the embodiments of the present disclosure described above it is contemplated that as electrode pads 10 20 are removed from or separated from the surface of the aed that the aed may automatically begin to power up electrode pads configured for use with any of the electrode delivery systems disclosed herein are shown and described in international patent application serial no pct us2007 010060 filed apr 27 2007 in u s patent application ser no 12 237 803 filed on sep 25 2008 and u s patent application publication no 2009 0227857 filed on mar 6 2008 the entire content of each of which being incorporated herein by reference an example of a suitable polymer which may be utilized in the electrode pads disclosed herein includes rg 63b hydrogel commercially available from tyco healthcare group d b a covidien other suitable hydrogels include those disclosed in u s patent application publication no 2009 0270709 filed on oct 30 2009.