Predictive value of baseline serum electrolyte levels for adverse prognosis in patients with severe traumatic brain injury in Lanzhou Plateau / 中华老年心脑血管病杂志

ABSTRACT

Objective To explore the predictive value of baseline serum electrolyte levels for adverse prognosis in patients with severe traumatic brain injury(sTBI)in Lanzhou Plateau Area.Methods A total of 210 sTBI patients admitted to our hospital were enrolled,and then divided into good progno-sis group(91 cases)and poor prognosis group(119 cases)according to clinical outcome.The clinical data and serum electrolyte levels were compared between the two groups.Multivariate logistic regres-sion analysis was used to analyze the influencing factors of poor prognosis,and ROC curve was plot-ted to analyze the predictive value of the influencing factors.Results There were significant differ-ences in diabetes,GCS score,serum calcium and magnesium levels between the two groups(P＜0.05,P＜0.01).Multivariate logistic regression analysis showed that diabetes(OR=3.483,95％CI:1.452-8.357),GCS score(OR=0.464,95％CI:0.3 6 3-0.594),hypocalcemia(OR=6.243,95％CI:3.353-11.626)and hypermagnesemia(OR=9.985,95％CI:1.251-19.701)were the influencing factors for poor prognosis of sTBI patients.ROC curve analysis showed that the AUC val-ue was 0.702(95％CI:0.635-0.763)in hypocalcemia and 0.565(95％CI:0.495-0.633)in hy-permagnesemia for the prediction.Conclusion Diabetes,low GCS score,hypocalcemia and hypermag-nesemia are risk factors for poor prognosis of sTBI patients at high altitude.Hypocalcemia has good predictive value in the prediction and can be used as an independent predictor.