cardiac outputendurance trainingmuscle oxygen diffusionFew formulas have been used in exercise physiology as extensively as the Fick formula, which calculates the rate of oxygen consumption (i.e., V.O2) as the product of cardiac output (Q.) and the difference in oxygen content in arterial and ...
Cardiac output starting from VCO2 (COVCO2) was obtained according to Mahutte's formula: COVCO2 = VCO2/[k (SaO2-SvO2)], where k represents a constant. The value for each patient was determined from the initial measurements of thermodilution cardiac output (COtd), VCO2, SaO2 and SvO2. ...
Three common formulae were used to calculate iFick for comparison - Lafarge, Dehmer, and Bergstra. Thermodilution was measured in triplicate and averaged with removal of outliers. Correlation between each method and direct Fick was assessed with linear regression. Bias between each method and direct...
A non-invasive technique for measuring cardiac output has been proposed using a modified Fick principle applied to carbon dioxide (Appendix A) (4). Our project aims to assess an adaptation of the technique for measuring cardiac output using the derivative Fick principle. In this new technique, ...
Three common formulae were used to calculate iFick for comparison - Lafarge, Dehmer, and Bergstra. Thermodilution was measured in triplicate and averaged with removal of outliers. Correlation between each method and direct Fick was assessed with linear regression. Bias between each method and direct...
/min/m. There was a significant correlation between them (P<0.001). By regression analysis the following formula was obtained showing the relation (r=0.919, P<0.0001, r=0.85): Cardiac index by Fick method =-0.63+1.03 (cardiac index by echo). Although the mean CO by echocardiography was ...
cardiacoutputoxygenconsumptionAssumed oxygen consumption (VO2) is increasingly used as a convenient surrogate for measured VO2 for calculation of cardiac output. This substitution is often based on empirical formulae, previously validated only in relatively young patients. To assess the inaccuracy ...
cardiac outputoxygen consumptionAssumed oxygen consumption (VO2) is increasingly used as a convenient surrogate for measured VO2 for calculation of cardiac output. This substitution is often based on empirical formulae, previously validated only in relatively young patients. To assess the inaccuracy ...