Heart problems do not always require surgery. In some cases, it can be treated with lifestyle changes, medication, or non-surgical procedures. For example, catheter ablation uses energy to create small scars in heart tissue to prevent abnormal electrical signals from passing through the heart. Coronary angioplasty is a minimally invasive procedure in which a stent is placed in a narrowed or blocked coronary artery to keep it open. nevertheless, to treat problems such as heart failure, build-up of plaque that partially or completely blocks blood flow in the coronary arteries, malfunction of heart valves, dilation or disease of large blood vessels (such as the aorta), and arrhythmias Surgery is often required.