Significant complications of the operation include bleeding, heart problems (heart attack, arrhythmias), stroke, infections (often pneumonia) and injury to the kidneys. Uses
Coronary artery bypass surgery aims to prevent death from coronary artery disease and improve quality of life by relieving angina. Indications for surgery are based on studies examining the pros and cons of CABG in various subgroups of patients (depending on the anatomy of the lesions or how well heart is functioning) with CAD and comparing it with other therapeutic strategies, most importantly percutaneous coronary intervention (PCI). Coronary artery disease
Coronary artery disease  is caused when coronary arteries of the heart accumulate atheromatic plaques, causing stenosis in one or more arteries and place myocardium at risk of myocardial infarction. CAD can occurs in any of the major vessels of coronary circulation, which are Left Main Stem, Left Ascending Artery, Circumflex artery, and Right Coronary Artery and their branches. CAD can be asymptomatic for some time- causing no trouble, can produce chest pain when patient is exercising, or can produce angina even at rest. The former is called stable angina, while the latter unstable angina. Worse, it can manifest as a myocardial infarction, in (which the blood flow to a part of myocardium is blocked. If the blood flow is not restored within a few hours, either spontaneously or by medical intervention, the specific part of the myocardium becomes necrotic (dies) and is replaced by a scar.
Zingo is a Swedish soft drink, with a carbonated orange flavor. Zingo was introduced during the 1950s as Ingo-dricka ("Ingo drink"), named after the boxer Ingemar "Ingo" Johansson. After Ingo lost the world championship in heavy weight boxing, the drink was renamed Zingo in 1962. Originally Zingo was produced in Norrköping, Sweden by Pripps. Pripps was bought by Carlsberg in 2000 and they continue to manufacture Zingo. Sources
Carlsberg Sweden
Swedish Wikipedia on Zingo

See also
Zingo-nostalgi!