PMC5899872_01
Radiograph of infant with heart failure and mild hypothermia showing central venous catheter overlying L3 vertebral body.
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fig1
Results from the first blood gas (all blood gas results were reported uncorrected for temperature) drawn from a catheter placed in the IVC (by Seldinger technique; sutured in place after advancing to its full length overlying the L3 vertebral body; Figure 1) were pH 7.01, PCO2 33 mm Hg, PO2 101 mm Hg, SO2 94%, and lactate 18 mmol/L.
Inferior vena cava oxygen saturation (uncorrected for temperature) and lactate during rewarming of infant with heart failure and mild hypothermia.
CRICC2018-2895124.002.jpg
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fig2
Early during rewarming, the IVC SO2 remained above 90% and was as high as 99% (Figure 2); declines in IVC SO2 and lactate during the first 3 hours of rewarming correlated (Spearman r: 0.94; p = 0.002).