Ketamine-fentanyl VS Fentanyl for Analgosedation in SICU

Abstract

This is a randomized, double-blinded study to evaluate the analgosedative effect of ketamine in a surgical intensive care unit. The patients who will receive continuous fentanyl infusion for either pain control or sedation will be recruited in this trial. Fentanyl will be titrated with initial loading doses of 20 mcg until the numeral rating scale(NRS) less than 4 or critical care pain observation tool (CPOT) less than 3 or Richmond agitation sedation score (RASS) -2-0. Then the patients will be randomised in to receive saline infusion in control group (Group C) or ketamine infusion in ketamine group (Group K). Ketamine will be administered with an initial bolus of 0.3 mg/kg followed by a perfusion of1.5 mcg/kg/min during the first 48 h. The dose of fentanyl will be protocolized adjusted according to NRS or CPOT or RASS. We tested the research hypothesis that low-doseketamine infusion is associated with a reduced fentanyl dose without increased vulnerability to its psychotropic effects.

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