In abdominal aoic aneurysm indication of operation is when size of aneurysm is ?

<p> Abdominal aoic aneurysm: Most commonest type of large vessel aneurysm. 95% have associated atheromatous change. 95% occur below renal aeries. Symptomatic aneurysms may cause minor symptoms such as back and abdominal discomfos, before severe sudden abdominal pain due to rupture develops. Asymptomatic aneurysms are found accidentally on physical examination. Abdominal aoic aneurysms csn rupture into anteriorly into peritoneal cavity (20%) or posterolaterally to retroperitoneal space (80%). Anterior rupture leads to free bleeding into peritoneum whereas posterior rupture leads to retroperitoneal haematoma. The patient remain conscious but in severe pain. If no operation is performed , death is inevitable. Indications for surgery:- 1. Asymptomatic aneurysm more than 5.5 cm 2. Growth rate more than 0.5 cm per year. 3. Painful tender aneurysm 4. Thrombosed aneurysm, aneurysm with distal emboli. {Reference: SRB&;s manual of surgery, 5th edition , page no. 198}