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"Decreases in mixed venous O2 saturation (SvO2) have been reported to occur in postcardiac surgery patients during weaning from mechanical ventilation. Our aim was to establish whether the physiological mechanism responsible for this phenomenon was a decrease in systemic O2delivery (DO2) or an increase in global O2 consumption (O2)."1
1. Decreases in Mixed Venous Blood O2 Saturation in Cardiac Surgery Patients Following Extubation.
Williams J, McLean A, Ahari J, Jose A, Al-Helou G et al.
J Intensive Care Med. 2017 Jan 1. [Epub ahead of print]