Propofol (2, 6 - diisopropylphenol), a highly liposoluble anaesthetic, has a potent antioxidant activity against lipid peroxidation in both in vitron and in vivo studies. Propofol also attenuates ischemia - reperfusion induced lipid peroxidation in humans. On the basis of this knowledge, we hypothesized that propofol has preventive effect for gut hypoperfusion - reperfusion induced injury in robot-assisted laparoscopic radical prostatectomy.