I believe the best way to remember is to understand why the changes occur and seeing examples. I have a teaching web site which contains a power point presentation on basic ekg and early in the program is an internal link to electrolyte induced ekg changes. I have used the programs to teach nursing and medical students. The site also has auscultation programs and a self teaching virtual pediatric patient https://www1.columbia.edu/sec/itc/hs/medical/peds_cardiology/ This for anyone's use. I would appreciate feed back as to its usefulness and suggestions as I am constantly trying to improve the site.