Though its results often are excellent, heart surgery does have some risks. Risks may include:
Infection, swelling, fever, and other signs of inflammation
A reaction to anaesthesia
Arrhythmias (irregular heartbeats)
Injury to tissues in the heart, liver, kidneys, and lungs
Stroke, which may cause short-term or permanent harm.
Death (More likely to occur in people who are really sick ere the surgery)
In general, the chance of complications is higher if heart surgery is done in an emergency condition (for example, during a heart attack). The danger also is higher if you have other underlying diseases or health conditions, such as diabetes, lung disease, kidney disease, or peripheral arterial disease.