A scanning phosphorescence quenching microscopy technique, designed to prevent accumulated O(2) consumption by the method, was applied to Po(2) measurements in mesenteric tissue. In an attempt to further increase the accuracy of the measurements, albumin-bound probe was topically applied to the tissue and an objective-mounted pressurized bag was used to reduce the oxygen transport bypass throug...

Cardiopulmonary assessment through oxygen uptake efficiency slope (OUES) data has shown encouraging results, revealing that we can obtain important clinical information about functional status. Until now, the use of OUES has not been established as a measure of cardiorespiratory capacity in an obese adult population, only in cardiac and pulmonary diseases or pediatric patients. The aim of this ...

CROWELL, JACK W., ROBERT G. FORD AND VIRGINIA M. LEWIS. Oxygen transport in hemorrhagic shock as a function of the hematocrit ratio. Am. J. Physiol. I g6(5) : I 033-1038. I g5g.-The oxygen consumption, arterial and venous oxygen concentration, and the arterial blood pH were measured, and the cardiac output, peripheral resistance and maximum oxygen transport capacity determined in 75 dogs with d...

Critical intracellular myocardial oxygen tension was determined by optical spectroscopic measurement of myoglobin oxygen saturation in crystalloid-perfused guinea pig hearts. Accurate end-point determinations of the maximally oxygenated and deoxygenated myoglobin were made. Hearts were subjected to a steady decrease in perfusate oxygen tension while left ventricular developed pressure, maximal ...