TR-Dizin İndeksli Açık & Kapalı Erişimli Yayınlar

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search.filters.applied.f.publicationcategory: search.filters.publicationcategory.Makale - Ulusal Hakemli DergiSubject: search.filters.subject.Bacteremia

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    Bloodstream Infections: Etiologic Agents and Their Antibiotic Resistance Rates
    (2016) Aydin, Mehtap; Kasikcioglu, Cemre; Nargiz-Kosucu, Sibel; Timurkaynak, Funda; Arslan, Hande; 0000-0002-5708-7915; ABG-7034-2021
    Objective: In this study, we aimed to investigate the etiological agents of bloodstream infections (BSIs) and their antibiotic resistance rates. Methods: The rates of antibiotic resistance of the microorganisms isolated from blood cultures in the microbiology laboratory between 2012 and 2013 were evaluated retrospectively. Blood cultures were performed by using BACTEC (TM) 9120 (Becton Dickinson, Sparks, MD, USA) automated system. Microorganisms that were isolated were identified by routine microbiological methods. Results: In our study, BSIs were most frequently detected in the cardiovascular surgery clinic. Out of 95 bacteria isolated from blood culture, 61 (64.2) were Gram-negative bacteria (46% enteric, 18% nonfermentative), 20 (21%) were Candida spp. and 14 (15%) were Gram-positive bacteria. The most effective antibiotics for enteric bacteria were found as colistin, followed by imipenem, meropenem and amikacin and for nonfermentative Gram-negative bacteria as colistin, cefepime, piperacillin-tazobactam, imipenem and amikacin. Conclusions: When the resistance rates were compared within two years, significant increases in resistance were observed for quinolones and ceftazidime in nonfermentative bacteria, and for carbapenems in enteric bacteria. Regular monitoring of etiological agents of BSIs and their antibiotic resistance rates will guide the selection of empiric therapy.
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    The Distribution and Antimicrobial Susceptibility Profiles of Etiologic Agents Isolated From Bacteremia Episodes Among Immunocompromised Patients
    (2017) Demirkaya, Melike Hamiyet; Yesilkaya, Aysegul; Akcil-Ok, Mehtap; Kurt-Azap, Ozlem; 0000-0002-3171-8926; AAK-4089-2021
    Objective: Bacteremia is the leading cause of morbidity and mortality among immunocompromised patients. The aim of this study is to evaluate the etiology of bacteremia and the antibiotic susceptibilities of etiologic agents among immunocompromised patients followed up from January 1, 2012 to July 30, 2013. Methods: Immunocompromised patients, both inpatient and outpatient treated in our hospital, were followed prospectively. The definition of "immunocompromised patients" consisted of solid organ (kidney, liver) transplantation recipients and hemato-oncologic malignancy patients with a history of chemotherapy in the previous month before bacteremia. Results: This prospective study comprised of 167 bacteremia episodes of 130 consecutive immunocompromised patients. The most isolated group of bacteria was Gram-negative bacteria. Escherichia coli was the most commonly (30.8%) isolated bacteria and the second was coagulase-negative staphylococci (15.1%). Fifty one percent of the E. coli isolates were extended-spectrum beta-lactamasepositive. Acinetobacter baumannii was the second most common bacteria of Gram-negative agents and the ratio of multiple drug-resistant (MDR) isolates among Acinetobacter isolates was 73%. Conclusions: Gram-negative bacteria are the most common causative agents of bacteremia in immunocompromised patients in our hospital. The rising ratio of MDR A. baumannii is a striking problem which causes difficult-to-treat infections.