Minerva anestesiologica
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Minerva anestesiologica · Dec 1991
[Method for the analysis of changes in mixed venous oxygen saturation in vascular surgery].
Continues monitoring of SvO2 was carried aut using an Oxi metrix pulmonary arthery catheter in 12 patients undergoing aortic surgery. Hemodynamic measurements were made before skin incision (baseline values), before aortic cross clamping, after aortic declamping and postoperatively during shivering. ⋯ As DO2 and VO2 were correlate after measuring cardiac output from the same technique, a mathematical correction of a common error for linear calculations was applied. It was also concluded that changes of SvO2 greater than 10% of baseline values should prompt the assessment of hemoglobin, cardiac output, SaO2 and oxygen demand, but changes of SvO2 less than 10% of baseline value should not prompt measurements.