The reader's rapid assimilation of medical concepts is the key to the continuing success of this best-selling book Rapid Interpretation of EKG's: Dr. Dubin's Classic. A caption explains the concept illustrated on each page, and a few simple sentences reinforce the concept with interactive (programmed) learning, which links to the following page. Dr. Dubin's light and entertaining style, known world-wide, makes learning enjoyable. Practice twelve-lead tracings at the end establish self confidence, and summarised reference sheets with examples (designed to be copied) provide an excellent review. This work is most recently updated in February 2006.