The treatment of chronic coronary artery disease has evolved over decades. AHA/
ACC and ESC/EACTS periodically review and update their guidelines for same, and
these serve as a reference and guide for medical practitioners all over. Even though
literature and evidence on offer is same, they sometimes differ in certain crucial
aspects. This comparison serves to bring both on same page, allowing the reader to
have a better understanding on the recommendations in particular situation, and the
differences. This is especially true when it comes to left main disease, multivessel
disease and significant left anterior descending artery stenosis. This comparison also
serves to highlight the important role of coronary artery bypass in chronic coronary
artery disease, as well as serving as a quick reference in case of dilemma.