Effects of time delay and body temperature on measurements of central venous oxygen saturation venous-arterial blood carbon dioxide partial pressures difference venous-arterial blood carbon dioxide partial pressures difference/arterial-venous oxygen difference ratio and lactate

摘要

BackgroundCentral venous oxygen saturation (ScvO2), venous-arterial blood carbon dioxide partial pressures difference (Pv-aCO2), venous-arterial blood carbon dioxide partial pressures difference/arterial-venous oxygen difference ratio (Pv-aCO2/Ca-vO2) and lactate are important parameters employed during shock resuscitation. We designed this study to confirm the effects of time delay and body temperature on measurements of these four parameters.