1. The effect of CO2 and 02 on the osmotic pressure of plasma has been estimated by measuring the freezing point depression of plasma whose blood had been equilibrated at 38° C. with gas mixtures of different composition.2. At constant oxygenation, for each millimol of CO2 added to one ...
DLCOvalues measured at HA were adjusted according to a recently developed method that accounts for the inter-individual differences of the effect of hypoxia exposure on diffusion subcomponents2, an approach allowing to maintain the validity of Eq.1on numerical basis. Blood samples were taken once t...
Blood O2 content (cO2) was calculated using the equation cO2 [mL/dL] ϭ cHb [g/dL] ϫ sO2 [mmol/mmol] ϫ 1.39 [mL/g] ϩ (PO2 [mm Hg] ϫ ␣ O2 [mL · dLϪ1 · mm HgϪ1]) to obtain the sum of O2 that is physically dissolved and chemically bound to Hb, ...
Increasing the carbon dioxide content of blood results in: a) increased H+ concentration of plasma. b) decreased blood pH. c) increased blood pH. d) both a and b. How is oxygen transported in the blood? A. As bicarbonate. B...
The arterio-venous O2 content difference, [O2](a-v), and coronary arterial and venous flows, CAF resp CVF, were continuously measured. The M \\(\\dot V\\) O2 transient was calculated using the following equation based on a 3 compartment model: \\(M\\dot V{ext{O}}_{ext{2}} =...
9 Calculation of the half-cell reduction potential (Ehc) permitted comparison of normal and SSRBCs with differing GSH content. The Nernst equation for the GSH Ehc (37°C, pH 7.4) has the form24: Ehc=−339−(61.5)log([NADPH]/[NADP+])mV The NADP+/NADPH couple in paired lysates ...
Blood was sampled from the subject’s earlobe at the end of each step for blood lactate concentration assessment (YSI 2700 Select; Yellow Springs, USA) and LT evaluation. Breath-by-breath gas exchange measurements (Quark CPET; Cosmed, Rome, Italy) allowed the assessment of V̇O2max (...
interaction of O2molecules with the luminophore in its lowest excited state, resulting in radiationless deactivation and return to the ground state. As a result, luminescence intensity (I) and lifetime (τ) are both reduced in the presence of O2according to the Stern–Volmer equation [27]: ...
Optical O2sensing platform has become an integral part of detailed, high-throughput analysis of cell populations, tissue samples and blood (micro)circulation1,2,3,8,17,18,19,20. Phosphorescence Lifetime IMaging (PLIM) is gaining popularity in particular, as it can provide quantitative, accurate,...
The correlation between the CO2 content of the dog's blood as calculated from this non-invasive method as compared to the CO2 content calculated from blood gas analysis of blood samples aspirated from the pulmonary artery is illustrated in FIG. 9. These data show that the PvCO2 predicted b...