Serial changes in GFR after aortic aneurysm surgery

Serial changes in GFR after elective aortic aneurysm surgery involving an infrarenal clamp (left panel) or suprarenal clamp (right panel); the latter procedure was associated with 20 to 80 minutes of total renal ischemia. One to two hours after surgery with suprarenal clamping, there was a 60 percent reduction in GFR. By 24 hours, however, partial recovery had occurred, and the GFR was almost normal by 48 hours.