title: Cortical oxygen pressure during acute venous kidney obstruction.
abstract: Different degrees of obstruction to the renal venous drainage were produced in rabbits, and the cortical oxygen pressures in the kidney measured with the multiple-wire surface electrode of Kessler and Luebbers. Sudden complete occlusion of the inferior vena cava (IVC) above the renal vein, or above and below the renal vein simultaneously, produced a slight decrease of about 27%. Sudden complete occlusion of the renal vein itself caused a severe decrease of 67% (obstruction near the IVC) or 100% (obstruction near the kidney). One hour later different degrees of incomplete recovery were found. The PO2 curves for the renal cortex revealed different pressure-dependent pathophysiological changes in the microcirculation. The multiple-wire surface electrode may well prove to be of use during renal surgery in which venous obstruction is a critical factor.
mesh_terms: D000818:Animals; D004567:Electrodes, Implanted; D005260:Female; D007672:Kidney Cortex / Q000502:physiology*; D008833:Microcirculation; D010100:Oxygen / Q000502:physiology*; D010101:Oxygen Consumption; D010313:Partial Pressure; D011817:Rabbits; D012079:Renal Circulation; D012082:Renal Veins / Q000503:physiopathology*; D014689:Venous Insufficiency
chemical_list: D010100:Oxygen