Pneumonia is a common postoperative complication, with a mortality of up to 40%. The Post-operative Pneumonia Risk Index (PPRI) was derived from a large cohort of general surgical patients but has not ...

Endovascular aneurysm repair (EVAR) is a minimally invasive surgery that may be used for aortic aneurysms. It involves placing a stent into the aorta to prevent a life threatening aneurysm rupture.