Objective To observe the clinical characteristics, risk factors, and sensitivity to antibiotics of nosocomial infections caused by acinetobacter baumannii. Methods Data were retrospectively collected from all isolated 37 strains acinetobacter. The clinical features, results of suptum culture and test of drug sensitivity were reviewed. Results The 37 acinetobacter baumannii strains mainly distributed in intensive care unit (ICU), most of them had the risk factors of receiving invasive treatment, mechanical ventilation, ect. The antibiotics imipenem, amikacin, pipercillin/tazobactam showed good efficacy for patients with acinetobacter infection, but other antibiotics had highly drug resistant rate. 5 were dead. The mortality of nosocomial infections caused by multi-drug resistant acinetobacter was 41.7%, which was much higher than the non-multi-drug resistant's (2 dead, the mortality was 8%). Conclusion Acinetobacter is one of the most important multi-drug resistant pathogen in nosocomial infections. Antimicrobial agents should be chosen according to antimicrobial susceptibility teat results. Patients who have the risk factors of nosocomial infections caused by acinetobacter should have suptum culture and antibiotic susceptibility studies as soon as possible.

Objective To investigate the correlation between the serum ghrelin levels and nutrition state in the patients with chronic obstructive pulmonary disease(COPD) ,as well as to explore the role of ghxelin in the nutri-tion metabolism. Methods Fifty-three COPD patients were observed, thirty-one of them were with malnutrition (group A), twenty-two COPD patients with normal nutrition status(group B), and twenty were healthy controls.Serum ghrelin, and nutritional parameters such as body mass index(BMI), ideal body weitht( % IBW), mid-upper arm cricumference(MAC), serum albumin(ALB), total lymphocyte counts(LYM) were determined. The correlation between ghrelin and nutritional parameters was analysed. Resuits The level of serum ghrelin in group A were sig-nificantly higher than those in group B and in healthy controls. And the serum ghrelin showed a negative correlation with BMI, % IBW, MAC, but there was no correlation between serum ghrelin level, ALB and LYM. Conclusion Ghrelin participated in the nutrition metabolism in patients with COPD, it would become much higher because of malnutrition in COPD.