<prompt> What is the indication for surgery in asymptomatic patients with abdominal aortic aneurysm?Transverse diameter 3 cmTransverse diameter 5.5 cmTransverse diameter 7.5 cmNo need for surgery unless symptomatic  <response>: Most precise test for imaging aortic aneurysm : CT scan5-year risk of rupture for aneurysm :5cm 1 to 2 and 5 cm-20 to 40For asymptomatic abdominal aortic aneurysms, operation is indicated if the diameter is 5.5 cmIn elective surgery of AAA, the operative mortality rate is 1 to 2 whereas after acute rupture the mortality of emergency operation is 50MC complications after repair are Cardiac ischemia and infarction Respiratory atelectasis lower lobe consolidationMC non-cardiac complication after repair of AAA is Renal failure. 