This second edition has been thoroughly revised and updated with additional illustrations,tables, fl owcharts, and video tagging to make it more lucid and understandable, forthe undergraduate medical students, besides postgraduates, and also for practicing clinicalphysicians and cardiologists.First edition of 2007 and the revised reprints of 2012 were well received by PGs and other medical fraternity. This 2nd edition has been thoroughly revised and updated as per the suggestions & feedbacks from PGs, practicing Physicians & Cardiologists with more illustrations, tables, added flow charts , video and audio tagging so as to make it more lucid, and understandable, that will benefit UG medical students also.