Objective To investigate the distribution of carbapenemase-resistant genes carried by multi-drug resistant Acineto-bacter baumannii .Methods 80 strains of multi-drug resistant Acinetobacter baumannii were collected .Polymerase chain reaction (PCR)wasusedtodetectcarbapenemase-resistantgenes,suchasOXA-23,OXA-24,OXA-51,OXA-58,SIM,IMP,VIM ,GIMand SPM ,in multi-drug resistant Acinetobacter baumannii .Results Drug resistant gene OXA-23 [49 (61 .3% )] ,OXA-51 [73 (91 .3% )] ,OXA-58[7(8 .8% )] ,OXA-24[1(1 .3% )] ,IMP[17(21 .3% )] and VIM[2(2 .5% )] were found in 80 strains of multi-drug resistant Acinetobacter baumannii ,while GIM ,SIM and SPM gene were not found .Conclusion IMP ,OXA ,VIM is the main genotypes carried by multi-drug resistant Acinetobacter baumannii .

Objective To study the effect of early enteral nutrition on stress ulcer in patients with severe craniocerebral injury.Methods 134 patients with severe craniocerebral injury were randomly divided into two groups,the early enteral nutrition group (the EEN group,69 cases) was given nasogastric intubation feeding after hospitalization or within 24 hours postoperation,the delayed enteral nutrition group (the DEN group,65 cases) was given nasogastric intubation feeding 24 hours postoperation.The incidence of upper gastrointestinal bleeding in two groups were compared.Results The incidence of upper gastrointestinal bleeding in the EEN group was significantly lower than that of the DEN group.Conclusions Patients with severe brain injury should be given enteral nutrition as soon as possible to reduce the occurrence of stress ulcer and prevent upper gastrointestinal bleeding.