Bypass is a major surgery and it has both serious as well minor complications. In this video, Dr. O P. Yadava, Chief Cardiac Surgeon, National Heart Institute will talk about the major and minor complication rates in coronary Heart bypass surgery. The complication rates depend upon the retrospective or prospective clinical studies. Serious complications include stroke, deep sternal wound infection or life threatening tachyarrhythmias. Temporary complications such as superficial infections, lung infections, and pleural effusion can be managed with conservative treatment.