Background: Development of resistance to antimicrobial agents and increase of cost as the result of unnecessary and inappropriate use of antibiotics has become a global health problem. Therefore many strategies, which are aimed at optimizing antibiotic therapy, have been developed until now. In Turkey, an antibiotic restriction policy as a governmental solution was applied to decrease the antibiotic use and especially costs by Ministry of Health in 2003. The aim of this study is to evaluate the rational antibiotic use and the impact of the implementation of new restriction policy, with their reinforcement by infectious disease specialist, on the hospital wide use of antibiotics. Methodology: The data of the inpatients received antibiotics (n=495) during January-June 2006 were compared with our previous study performed by the same methodology before the restriction policy in 1998. In both studies, prospective active daily surveillance of patients was performed by three infectious disease specialists. The appropriateness of antibiotic therapy was determined using the criteria described by Kunin and Jones. The data were analyzed by using SPSS for Windows. Results: While the rate of antibiotic use decreased from 16.6% to 11.3%, rational use increased after the restriction policy (p<0.001). Besides the specific antibiotic use increasing, prophylactic antibiotic use was found decreased (p<0.001). Mostly determined irrationality was the prophylactic uses in both studies. As expected, infectious disease specialist examinations resulted in an increase in the appropriate antibiotic use. Conclusions: The restriction policy was effective in decreasing the antibiotic consumption and increasing the rational antibiotic prescription in our hospital.

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In a rhinogenic sinusitis model, although histological features of sinusitis were demonstrated, further studies are required to standardize this model and to examine whether or not the studied bacterial strain spreads from nasal cavity into sinus.

The study shows that the Turkish government's new intervention policy on antimicrobial prescribing has been effective.

Stenotrophomonas maltophilia is an important nosocomial pathogen with increasing frequency in recent years, especially in immunocompromised and clinically debilitated patients. The aim of this study is to describe the characteristics of 35 episodes of S. maltophilia bacteremia at Celal Bayar University hospital in Turkey over a 3-year period from January 2003 to December 2005. Cases were identified with microbiology laboratory records and clinical data were collected from the medical record of each patient. The source of bacteremia was central venous catheter (CVC) in 65.7% (23) and respiratory tract infection in 2.9% (1) of episodes while the source of bacteremia was unknown in 11 (31.4%) episodes of bacteremia. Factors significantly associated with mortality were age of > or =65 years, APACHE score of > or =16, the presence of the total parenteral nutrition, anemia, low creatinine clearance level and shock. The most sensitive antibiotic was found as trimethoprim-sulfamethoxazole (91.4%) in antibiotic susceptibility testing of the isolates. Susceptibilities of piperacillin-tazobactam and netilmicin which frequently used antibiotics as an empirical therapy were 62.8% and 68.6%, respectively.