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Öğe Annual trends in antibiotic resistance of nosocomial Acinetobacter baumannii strains and the effect of synergistic antibiotic combinations(Luigi Ponzio E Figlio, 2004) Tatman-Otkun, M; Gürcan, S; Özer, B; Shokrylanbaran, NAcinetobacter baumannii is becoming increasingly resistant to antibiotics often requiring combination therapy. Annual changes of resistance to selected antimicrobials of 150 A. baumannii strains, isolated as nosocomial pathogens between 1994 and 2000 were investigated. The synergistic effects of antimicrobials were studied using a microdilution checkerboard technique in eight selected isolates resistant to third-generation cephalosporins and beta-lactam/beta-lactamase inhibitor combinations and to at least one aminoglycoside. Rates of resistance of cefepime, ceftazidime, ampicillin/sulbactam, amikacin and ciprofloxacin (before 1996 and between 1996-2000) were 29.7% - 72.6, 37.8% - 81.4%, 35.1% - 72.6%, 8.1% - 56.6%, 5.4% - 46.0% respectively (p<0.001 for each one). Synergy was observed in at least one of the combinations of antibiotics from seven of eight isolates (87%), no antagonism was detected with any combination. Ceftazidime-amikacin (50%) and ampicillin/sulbactam-tobramycin (50%) were the most effective combinations. Due to the effectiveness of sulbactams to Acinetobacter, ampicillin/sulbactam-tobramycin combination is recommended as the first line of choice.Öğe The antimicrobial susceptibility of Stenotrophomonas maltophilia isolates using three different methods and their genetic relatedness -: art. no. 24(Bmc, 2005) Tatman-Otkun, M; Gürcan, S; Özer, B; Aydoslu, B; Bukavaz, SBackground: Stenotrophomonas maltophilia is inherently resistant to many antimicrobials. So far, antimicrobial susceptibility tests for S. maltophilia have not been fully standardized. The purpose of the study was to compare the susceptibility of S. maltophilia isolates against seven different antimicrobials using three different methods and to investigate their genetic relatedness. Results: Although trimethoprim/sulfamethoxazole (SXT) and ciprofloxacin have the lowest MIC values, SXT (98.1%) and ticarcillin/clavulanate (TLc) (73.1%) were found to be the most effective antimicrobials by agar dilution method, which was in accordance with the breakpoints established by NCCLS. Disc diffusion and E-test was in agreement with agar dilution method for SXT. When the isolation dates, clinics, antibiotyping, and AP-PCR data were investigated, two small outbreaks consisting of five and three cases were determined. Conclusion: By using the NCCLS criteria, disc diffusion and E-test were unreliable alternative methods for S. maltophilia, except for SXT. However, the significance of these data should be confirmed by further experimental and clinical studies.Öğe Efficacy of low level laser therapy in myofascial pain syndrome(Wiley, 2003) Hakgüder, A; Birtane, M; Gürcan, S; Kokino, S; Turan, FNBackground and objectives: The efficacy of low level laser therapy (LLLT) in myofascial pain syndrome (MPS) seems controversial. Our aim was to clarify the effect of LLLT in MPS by using algometry and thermography. Study Design/Materials and Methods: Sixty-two patients with MPS having an active trigger point in the neck or upper back region were randomly divided into two equal groups according to therapy applied (group 1: LLLT + stretching exercises, group 2: stretching exercises alone). The outcome measures were pain measured with visual analogue scale (VAS), algometry on the trigger point, algometric difference, thermographic difference, and thermal asymmetry. Comparison was made within and between the groups pre- and post-therapeutically and 3 weeks after therapy. Results: Mean pain values decreased more significantly in group 1 from baseline to 3 weeks followup, (7.54-3.06) while these values were 7.03-5.19 in group 2 (P < 0.05). Group comparisons revealed significant favorable differences in group 1 patients in terms of all other parameters at the first and the second evaluation post therapeutically (P < 0.05). Conclusions: LLLT seemed to be beneficial for pain in MPS by using algometry and thermography. (C) 2003 Wiley-Liss, Inc.Öğe First case report of empyema caused by Beauveria bassiana(Blackwell Publishing, 2006) Gürcan, S; Tugrul, HM; Yörük, Y; Özer, B; Tatman-Otkun, M; Otkun, MInfections with Beauveria bassiana are extremely rare in humans. A 51-year-old man was admitted to hospital with the diagnosis of lung adenocarcinoma. Thoracic wall resection with lobectomy was applied and empyema has developed after prolonged air leakage. B. bassiana was isolated in pleural fluid. The patient improved without antifungal therapy after thoracotomy with securing of air leakage.Öğe Meningitis due to Bacillus anthracis(Yonsei Univ College Medicine, 2005) Gürcan, S; Akata, F; Kuloglu, F; Erdogan, S; Tugrul, MThe first case of haemorrhagic meningitis due to Bacillus anthracis in the European part of Turkey is reported here. B. anthracis, sensitive to penicillin, was isolated from the cerebrospinal fluid and blood cultures. Although appropriate therapy was administered, the patient died two days after hospitalization.Öğe An outbreak of tularemia in western Black Sea Region of Turkey(Yonsei Univ College Medicine, 2004) Gürcan, S; Tatman-Otkun, M; Otkun, M; Arikan, OK; Ozer, BThe aim of this study was to investigate the source and the size of a tularemia outbreak in a village located in a non-endemic area. Five patients from the same village were admitted to hospital with the same complaints all within one week of September 2001. Tularemia was suspected and a diagnosis was made after physical and anamnesis examinations. The village was visited the same week that the patients were admitted to the hospital, in the January and April 2002. The villagers were examined and screened serologically by microagglutination method and the water sources were investigated bacteriologically. A total of 14 people were found to be infected from the outbreak and the oropharyngeal form was the only clinical presentation. Antibody titers ranged between 1 : 80 and 1 : 640. The patients responded well to the aminoglycoside plus tetracycline therapy. Examination of the pipewater and three springs revealed that all the water sources were contaminated by coliforrns, however, Francisella tularensis could not be isolated in glucose-cystine. medium. Antibody levels stayed stable or decreased seven months after. Tularemia had not been reported in this area before, so the first patients were misdiagnosed. In conclusion tularemia should be considered in differential diagnosis of patients with fever, sore throat and cervical lymphadenopaties.
