Publications by authors named "Gulsen Hazırolan"

Background: Data on infections in children are scarce in the context of earthquakes. Here, we describe our clinical experiences regarding infections in pediatric victims after the earthquakes in Kahramanmaraş/Türkiye.

Methods: Trauma patients after the Kahramanmaraş earthquakes, aged under 18 years and admitted to our hospital, were evaluated retrospectively.

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Objectives: This study was conducted to measure the prevalence of antibiotic resistance, and corresponding resistance genes among Bacteroides and related genera in a tertiary hospital.

Methods: We examined 138 clinical strains of Bacteroides, Phocaeicola and Parabacteroides species isolated between July 2018 and June 2022. Antibiotic susceptibility tests were conducted using agar dilution.

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Objectives: Multidrug resistant infections present a treatment challenge for clinicians. These infections have been associated with increased morbidity and mortality. Recently, there has been increasing discussion in the literature that high dose extended infusion of meropenem may be helpful.

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Objective: The rise of antibiotic-resistant organisms necessitates the implementation of rapid identification (ID) and antibiotic susceptibility testing (AST) methods for patient management. We aimed to analyze how rapid ID and AST reporting influenced clinicians' treatment decisions.

Materials And Methods: Bacteria were identified directly from positive blood cultures (BC) using serum separator tubes and MALDI-TOF MS.

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This study aimed to assess the performance of the MALDI-TOF MS short incubation method for bacterial identification at short-term incubation times to improve the reporting of blood cultures. MALDI-TOF MS analysis was conducted at intervals of 2, 4, and 6 hours during the development of microbial biomass on solid media until successful identification was achieved, with a final assessment at 24 hours for conventional identification. Species-level identification rates at the 2nd, 4th, 6th, and 24th hours were 57.

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Article Synopsis
  • - The study analyzed 412 cases of bloodstream infections in hospitalized children, finding Klebsiella spp., Escherichia coli, and Acinetobacter spp. to be the most common bacteria involved.
  • - High levels of antibiotic resistance were observed, with 41.2% of isolates being multidrug-resistant and 27.6% resistant to carbapenems, indicating a concerning trend over the years.
  • - Key risk factors for these infections included having a central-venous catheter and being admitted to a pediatric intensive care unit; outcomes varied significantly between patients infected with carbapenem-resistant and carbapenem-susceptible bacteria.
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Objectives: To investigate the isolation rates, antimicrobial resistance rates, minimum inhibitory concentration values of antimicrobial agents, and clonal relationships of Enterococcus faecalis and Enterococcus faeciumdue to the relocation of a hospital to a newly constructed building.

Methods: The comparative, prospective study was conducted at adult general intensive care units of the Mus State Hospital, Mus, Turkey, in two phases; before the relocation from January 25 to December 1, 2014, and after the relocation from February 10 to May 24, 2015. Rectal swab samples were collected 72 hours post-hospitalisation.

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The aim of this study was to assess the utility of CHROMID Colistin R for direct detection of colistin-resistant Gram-negative bacteria from positive blood cultures. A total of 390 blood cultures from hospitalised patients containing Gram-negative bacteria were included in this study. These blood cultures were referred to clinical laboratories in the United Kingdom and Türkiye.

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It is well-established that Infectious Diseases consultation (IDC) enhances the prognosis of bloodstream infections. However, it is unclear if adoption of an institutional sepsis protocol would lead to any further improvement in a setting where IDC and infectious diseases approval (IDA) - available throughout 7 days/24 hours -are mandatory for administering broad spectrum antibiotics. We aimed to evaluate the influence of the institutional sepsis protocol developed by Department of Infectious Diseases and Clinical Microbiology on the selection of appropriate empirical antibiotics by IDC through focusing on patients who had bloodstream infections caused by Extended-spectrum β-lactamase (ESBL) producing Escherichia coli and Klebsiella pneumoniae, which poses a therapeutic challenge.

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Objectives: This study aimed to evaluate the effectiveness of a 1-min 10% povidone-iodine immersion in the decontamination of dropped osteochondral fragments.

Materials And Methods: Forty-eight sets of sterile osteochondral bone fragments, each consisting of three samples, were prepared from removed femoral heads that would otherwise be discarded during different hip replacement surgeries. Immediately afterward, each set was dropped on the floor right behind the surgeon in another operating room in which fracture fixation operations were being performed.

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Objective: Here, we compared the impact of different polices on the epidemiology of Vancomycin-resistant bloodstream infections (VRE-BSIs) in a tertiary care hospital including two hospital buildings (oncology and adult hospitals) in the same campus.

Material And Methods: All patients who were hospitalized in high-risk units were screened weekly for VRE colonization via rectal swab between January 2006 and January 2013. After January 2013, VRE screening was only performed in cases of suspicion of VRE outbreak and during point prevalence studies to evaluate the epidemiology of VRE colonization.

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Background: Immune checkpoint inhibitors (ICIs) are a promising new treatment for different types of cancer. The infectious complications in patients taking ICIs are rare.

Case Report: A 58-year-old male who received chemotherapy consisting of pembrolizumab (PD-1 inhibitor) for esophagus squamous cell carcinoma one month before was admitted to the emergency room with shortness of breath soon after fiberoptic bronchoscopy, which was done for the inspection of the lower airway.

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Article Synopsis
  • Cefiderocol is effective against carbapenem-resistant bacteria, but its susceptibility varies based on different interpretive criteria from EUCAST and CLSI.
  • Researchers tested 254 CRK blood isolates and found significant differences in resistance rates to cefiderocol when applying EUCAST versus CLSI criteria.
  • High cefiderocol resistance rates were especially noted among NDM producers using EUCAST guidelines, leading to the recommendation that these criteria should be prioritized for testing until more clinical data is available.
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An outbreak investigation was initiated after detecting an increase in the number of patients with bloodstream infections (SM-BSIs) througout the hospital. was isolated from the cultures of blood-gas ınjectors containing liquid heparin. The incidence density of SM-BSIs decreased significantly after prohibiting the use of those injectors.

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Article Synopsis
  • Aminoglycosides are important for treating infections caused by carbapenemase-producing bacteria (CPK), but resistance to these antibiotics is rising, primarily due to 16S rRNA methyltransferases (RMTs) often found alongside NDM genes.
  • In a study of 181 invasive CPK isolates, 60% were resistant to amikacin, gentamicin, and tobramycin, with most of the resistant isolates carrying RMTs, particularly ArmA and RmtC.
  • The study found that the resistance is largely linked to specific clonal types, particularly ST2096 and ST14, which are associated with certain carbapenemases and other resistance genes, suggesting that clonal spread is a
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Introduction: There are no precise data about the effect of Aspergillus infection on lung function other than allergic bronchopulmonary aspergillosis (ABPA) in patients with cystic fibrosis (pwCF). Here, we aimed to determine clinical phenotypes caused by Aspergillus spp. using laboratory and immunologic parameters and to compare Aspergillus phenotypes in terms of pulmonary function tests (PFT) prospectively.

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Growing evidence suggests that oral infections can modify the course of systemic diseases. To date, epidemiological data on microbial oral infections are scarce. Here, we performed a comprehensive analysis of the trend and microbial diversity in oral infection specimens referred for clinical microbiology analysis from 2010 to 2020.

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Background: Chronic Pseudomonas aeruginosa colonization (Pa-CC) affects cystic fibrosis (CF) progression, including pulmonary exacerbations and pulmonary function tests. There are few studies of the effects of eradication protocols on colonization time. Here, we aimed to evaluate the effect of eradication regimens on chronic colonization and assess the impact of Pa-CC on body mass index, lung functions, and pulmonary exacerbations.

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Background: Methicillin-resistant Staphylococcus aureus (MRSA) rates have increased in cystic fibrosis (CF) patients.This study aimed to determine the rate of MRSA, define risk factors, and clarify the effect of MRSA on pulmonary functions, annual pulmonary exacerbation (aPEx) in children with MRSA positive CF.

Methods: This was a retrospective case control study.

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We investigated the change in the epidemiology of nosocomial bloodstream infections (BSIs) caused by multidrug-resistant bacteria during Coronavirus Disease (COVID-19) and antibiotic consumption rates at a pandemic hospital and at the Oncology Hospital which operated as COVID-19-free on the same university campus. Significant increases in the infection density rate (IDRs) of BSIs caused by carbapenem-resistant (CRAB) and ampicillin-resistant (ARE) were detected at the pandemic hospital, whereas carbapenem-resistant BSIs were increased at the non-pandemic Oncology Hospital. Pulsed field gel electrophoresis showed a polyclonal outbreak of CRAB in COVID-19 intensive care units.

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Ceftazidime-avibactam exhibits good in vitro activity against carbapenem resistant Klebsiella carrying OXA-48-like enzymes. We tested two hundred unique carbapenem resistant Klebsiella blood stream isolates (71% with single OXA-48-like carbapenemases, including OXA-48, n = 62; OXA-232, n = 57; OXA-244, n = 17; OXA-181, n = 5) that were collected as part of a multicentre study against ceftazidime-avibactam using Etest (bioMérieux, Marcyl'Étoile, France), 10/4 μg disc (Thermo Fisher) and Sensititre Gram Negative EURGNCOL Plates (Lyophilized panels, Sensititre, Thermo Fisher) with the aim of comparing the performances of the Etest and disc to that of Sensititre. Ceftazidime-avibactam MIC was 2/>16 mg/L for the entire collection and was 2/4 mg/L for single OXA-48-like producers.

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Objective: Patients with hematological malignancies (HMs) have a substantial incidence of febrile neutropenic episodes. Gram-negative bacteremia (GNB) is still the major cause of these episodes. We evaluated the factors associated with GNB and mortality of bacteremic patients with HMs in a high-resistance setting.

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Background: COVID-19-associated pulmonary aspergillosis (CAPA) has been reported as an important cause of mortality in critically ill patients with an incidence rate ranging from 5% to 35% during the first and second pandemic waves.

Objectives: We aimed to evaluate the incidence, risk factors for CAPA by a screening protocol and outcome in the critically ill patients during the third wave of the pandemic.

Patients/methods: This prospective cohort study was conducted in two intensive care units (ICU) designated for patients with COVID-19 in a tertiary care university hospital between 18 November 2020 and 24 April 2021.

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