Oxygen transport in mesenteric microcirculation with artificially augmented oxygen consumption

Oxygen exchange in the mesenteric microcirculation of the dog.

The relationships of O2 tension in mesenteric lymph (PmlO2) and mesenteric venous blood (PmvO2) to intestinal O2 delivery/O2 consumption (DO2/VO2) were examined after graded hemorrhage (10 dogs), stepwise increments in FIO2 (4 dogs), and regional infusion of papaverine (2 mg/min or IV glucagon (25 microgram/kg) (4 dogs). Measurements included superior mesenteric arterial flow (SMA-Q), PaO2, Pml...

Oxygen gradients in the microcirculation.

As arterialized blood transits from the central circulation to the periphery, oxygen exits through the vessel walls driven by radial oxygen gradients that extend from the red blood cell column, through the plasma, the vessel wall, and the parenchymal tissue. This exit determines a longitudinal gradient of blood oxygen saturation whose extent is inversely related to the level of metabolic activi...

Oxygen delivery and consumption in the microcirculation after extreme hemodilution with perfluorocarbons.

The oxygen transport capacity of fluorocarbons was investigated in the hamster chamber window model microcirculation to determine the rate at which oxygen is delivered to the tissue in conditions of extreme hemodilution [hematocrit (Hct) 11%]. Hydroxyethlyl starch (HES 200; 200 kDa molecular mass) was used as a plasma expander for two isovolemic hemodilutions performed with 10% HES 200 until a ...

Oxygen consumption and active transport in separated renal tubules.

BURG, MAURICE B., AND JACK ORLOFF. Oxygen com~mpte'on and active ~WI..S$UW~ in sefiurated renal tubules. Am. J. Physiol. 203 (2) : 327-3309 1962.-A method for the separation of intact viable cells from rabbit renal cortex has been developed. Separation is achieved by treatment of the excised kidney with the proteolytic enzyme collagenase. The resultant suspension consists principally of short l...

Oxygen Consumption in Cycling: