“…Despite the development of sophisticated radiological techniques in the diagnosis of small bowel ischemia [3,7], the clinical problems related to the viability of isch emic bowel are still unsolved [1], The angiographic pic ture of a patent superior mesenteric artery (SMA) as well as the intraoperative findings of arterial pulsations, the return of mesenteric bleeding and the onset of normal color patterns are poor guides to viability [4,11]. Both radiological and intraoperative signs indicate the restora tion of the circulation only, but do not give objective information about ischemic injury to the intestinal wall, persistent disturbances of the intestinal microcirculation, and the damage due to reoxygenation of the ischemic tis sue [18,24], Compared to mesenteric angiography, oxy gen pressure histograms provide real-time assessment of oxygen perfusion and oxygen transport [6,12,13,19,20].…”