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Despite the study limitations, the authors found that protamine administration through radial artery route can effectively neutralize heparin without any significant coagulopathy and postoperative bleeding. We suggest using this derived low dose of protamine (total heparin dose/1.6) through radial arterial route can be practical and efficient to reverse the effect of heparin after cardiac surgery without using central route (ascending aorta or central venous line).

Intermittent PuO2 values at six and 12 hours after ICU admission may be predictors of AKI, although the AUCs to predict AKI were low (0.68 and 0.64). AKI prediction by PuO2 was not possible immediately after induction of general anesthesia (not statistically significant) and immediately after ICU admission (AUC was very low). Further studies are required to confirm the validity of intermittent PuO2 monitoring.