Objective To investigate risk factors for healthcare-associated infection (HAI) in patients with aneurysmal subarachnoid hemorrhage(aSAH)in the department of neurology of a hospital.Methods Clinical data of 47 patients with aSAH who were admitted to a hospital from January 2014 to January 2015 were retrospectively analyzed.Results Of 47 patients with aSAH,17 developed 19 times of HAI,HAI rate was 36.17%,case infection rate was 40.43%.The main infection site was lower respiratory tract (n = 17,89.47%),followed by urinary tract (n=2,10.53%);2 patients had both lower respiratory tract infection and urinary tract infection.17 patients were performed pathogenic detection,13 pathogenic isolates were isolated from 9 patients.Multivariate non-conditional logistic regression analysis revealed that risk factors for HAI in patients with aSAH were disturbance of consciousness (OR,24.878 [95%CI ,3.996 - 156.040])and intensive care unit admission(OR, 8.645 [95%CI ,1.419-52.670]).The prognosis of patients with HAI was poorer than those without HAI(Z =4.108,P < 0.001 ).Conclusion Patients with aSAH are at high risk of HAI,it is necessary to take targeted prevention and control measures for reducing the occurrence of HAI and promoting good prognosis.

Objective To investigate the role of complement C3 in early predicting pregnancy outcomes of frozen-thawed embryo transfer(F-ET).Methods A total of 378 F-ET cycles were prospectively collected and divided into group A(complement C3≤1.05,120 cycles)and group B(complement C3>1.05,258 cycles)based on the best cutoff value of complement C3 for predicting F-ET pregnancy outcomes.The outcomes of the two groups were compared,and the best cutoff value of complement C3 for predicting F-ET spontaneous abortion was analyzed in group B.Results Age was a risk factor for successful F-ET pregnancy(P<0.05),and complement C3 and embryo type were protective factors for successful F-ET pregnancy(P<0.05).The area under the receiver-operating characteristic curve(ROC)of complement C3 for predicting F-ET pregnancy outcome was 0.702,and the best cutoff value was 1.05 g/L,with a clinical pregnancy sensitivity of 87.60%and a specificity of 52.00%.The clinical pregnancy rate and embryo implantation rate in group B were both significantly higher than those in group A(67.05%vs.52.75%,P<0.05).The best cutoff value of complement C3 for predicting spontaneous abortion after F-ET was 1.32 g/L,with an area under the ROC curve of 0.760,a sensitivity of 69.00%,and a specificity of 81.20%.Conclusions Complement C3 is of significance in the early prediction of F-ET pregnancy outcome.When complement C3 exceeds the level of 1.32 g/L,it may lead to an increase in the rate of spontaneous abortion.