Also, just to clarify, even you 30+ plus y/o cardiac monitors show lead 2. Leads 1, 2, and 3 are the most used. Only if we find something wrong (or can't find anything wrong in some cases) will we use a 12 lead. My full time service has been sending EKGs for several years now, and recently had a camera installed in the patient compartment that we can transmit to the ED as well. So far, both cardiac patients that I've transported (only been here for two months) have by-passed the ER in favor of the Cath Lab.