ABSTRACT
Objective To identify the risk factors for the development of hypotension during craniotomy in patients with severe traumatic brain injury (TBI).Methods One hundred and seventy-five patients,aged ≥ 18 yr,undergoing emergency craniotomy for TBI,were selected.According to the occurrence of intraoperative hypotension (systolic pressure ＜ 90 mm Hg or the decreased amplitude ＞ 30％ of the baseline),all the patients were divided into 2 groups:hypotension group and non-hypotension group.The data including gender,age,preoperative Glasgow Coma Scale (GCS) score,pupils,preoperative systolic pressure,application of mannitol,hyperventilation,methods for induction of anesthesia,and decrease in intracranial pressure were recorded.The risk factors of which P values were less than 0.05 would enter the multi-factor logistic regression analysis to stratify the independent risk factors for intraoperative hypotension.Results Fifty patients developed intraoperative hypotension,and the incidence was 28.57％.There was significant difference in preoperative systolic pressure,GCS score and changes in pupils between hypotension group and non-hypotension group (P ＜ 0.05).Logistic regression analysis showed that preoperative systolic pressure was the independent risk factor for hypotension during craniotomy in patients with severe TBI (P ＜ 0.05),and OR value (95％ confidence interval) was 1.019 (1.005-1.033),and regression coefficient was 0.019.Conclusion Preoperative systolic pressure is the independent risk factor for hypotension during craniotomy in patients with severe TBI.
