Study on the effects of different concentrations of propofol target controlled infusion on postoperative cognitive function in patients undergoing coronary artery bypass grafting / 中国生化药物杂志

ABSTRACT

Objective To investigate the effects of different concentration propofol target controlled infusion on postoperative cognitive function in patients undergoing coronary artery bypass grafting.Methods182 cases with coronary heart disease undergoing off-pump coronary artery bypass grafting were randomly divided into groupA and groupB from January 2014 to December 2016 in our hospital, 91cases in each group.GroupA were given a small dose propofol target controlled infusion anesthesia;groupB were given high dose propofol target controlled infusion anesthesia.The total dose of propofol induction and effect compartment concentration in the two groups were observed, and the Mini Mental State Examination(MMSE) in the two groups was evaluated preoperative, postoperative 24h, 48h, 72h.Concentration of S100β was determined at suture, postoperative 24h, 72h.ResultsThe total dose of propofol induction in the groupA was significantly lower than that in the groupB (P<0.05), effect compartment concentration between the two groups had no statistically significant difference.MMSE scores in the group A at postoperation 24h, 48h, were higher than those in the group B (P<0.05).Concentration of S100β in the group A was lower than those in the group B at suture, postoperative 24h, 72h.MMSE and concentration of S100β in the two groups were not statistically significant at post operation 72h.ConclusionLow dose propofol target controlled infusion can reduce postoperative cognitive dysfunction in patients undergoing coronary artery bypass grafting, which is worthy of clinical application.