What is the indication for surgery in asymptomatic patients with the abdominal aoic aneurysm?

Most precise test for imaging aoic aneurysm: CT scan5-year risk of rupture for an aneurysm : <5cm - 1 to 2% and > 5 cm-20 to 40%For asymptomatic abdominal aoic aneurysms, an operation is indicated if the diameter is > 5.5 cmIn elective surgery of AAA, the operative moality rate is 1 to 2% whereas after acute rupture the moality of emergency operation is >50%MC complications after repair are Cardiac (ischemia and infarction) & Respiratory (atelectasis & lower lobe consolidation)MC non-cardiac complication after repair of AAA is the Renal failure.