Why the study?
To evaluate how the fraction of inspired oxygen (FIO2) affects mixed venous oxygen saturation (SvO2) values and the accuracy of Fick-equation-based cardiac output.
Does increased FIO2 influence SvO2 interpretation and accuracy of Fick-based cardiac output assessment in adult patients undergoing elective cardiac surgery?
Does increased FIO2 influence SvO2 interpretation and accuracy of Fick-based cardiac output assessment in adult patients undergoing elective cardiac surgery?
Increased FIO2 alters SvO2 interpretation and exacerbates inaccuracies in Fick-based cardiac output estimation in cardiac surgery patients.
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High FIO2 elevates SvO2 and widens Fick-CO discrepancy versus TD-CO; leaves open whether adjusted thresholds improve perioperative CO assessment.
Lin et al. (2021) studied this question.
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