Publications by authors named "Ozger H"

Introduction: This study investigated wrist joint degeneration after curettage and PMMA treatment for giant cell bone tumours (GCBT) at the distal radius.

Methods: We performed a retrospective single-centre study, which included 23 patients with GCBT at distal radius treated with curettage and PMMA between 2001 and 2021. The progression of wrist joint degeneration was assessed through radiographic evidence, comparing the postoperative grade with both the preoperative grade and the grade of the contralateral wrist at the latest follow-up.

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Objectives: To evaluate the possible impact of RAST on optimal antimicrobial therapy via de-escalation or escalation, and to determine the reduction in antibiotic susceptibility reporting time with RAST.

Methods: In this single-center, prospective descriptive study, RAST was performed on clinical blood cultures containing E. coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii isolates.

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Article Synopsis
  • * Out of 90 RTR participants, the median antibody level was 16.7 AU/mL at 42 days post-first dose, with 60% showing positive serology; mycophenolic acid (MFA) and ACE inhibitors were found to decrease seropositivity.
  • * Patients who received the Pfizer/BioNTech booster had better antibody levels and lower COVID-19 infections compared to those with the CoronaVac/Sinovac booster, indicating that heterologous vaccination is more effective for RTRs.
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Objective: This study aimed to investigate the relationship between procalcitonin (PCT) kinetic and estimated glomerular filtration rates (eGFR) in critically ill patients who had Gram-negative primary bloodstream infection (GN-BSI) and responded to the antimicrobial therapy.

Materials And Methods: This single-centered study was retrospective and observational. Critically ill GN-BSI patients over 18 years old who had clinical and microbiological responses to antibiotic treatment were included in the study.

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Background And Objectives: This study aimed to evaluate the frequency of multidrug-resistant (MDR) bacteria in biliary samples, MDR-bacteria risk factors, and the relationship between MDR-bacteria positivity and some clinical outcomes.

Materials And Methods: The study was conducted between May 2018 and May 2023, including patients over the age of 18 who had positive culture results in biliary samples. The frequency of MDR-bacteria in biliary samples was evaluated.

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Background/aim: This experimental study aimed to examine the effectiveness of transdermal antimicrobial photodynamic therapy (APDT) with and without antimicrobial lock therapy (ALT), on catheter biofilms.

Methods: S. epidermidis and C.

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The multisystemic effects of COVID-19 may continue for a longer time period following the acute phase, depending on the severity of the disease. However, long-term systemic transcriptomic changes associated with COVID-19 disease and the impact of disease severity are not fully understood. We aimed to investigate the impact of COVID-19 and its severity on transcriptomic alterations in peripheral blood mononuclear cells (PBMCs) following 1 year of the disease.

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Background: The study aimed to compare polymyxin B with colistimethate sodium (CMS) regarding neurotoxicity, nephrotoxicity and 30-day mortality in patients with MDR Gram-negatives.

Methods: All adult patients who received polymyxin B or CMS for at least 24 h for the treatment of MDR microorganisms were evaluated retrospectively.

Results: Among 413 initially screened patients, 147 patients who were conscious and able to express their symptoms were included in the neurotoxicity analysis.

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Objective: Periprosthetic joint infections (PJI) represent major complications in arthroplasty, contributing to increased patient morbidity and imposing substantial financial burdens. Meticulous surveillance of PJI occurrences and identification of associated risk factors is imperative for accurately gauging the incidence rates and implementing proactive infection control measures. This study aimed to ascertain the early incidence of PJI and elucidate the key risk factors involved in its occurrence.

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Article Synopsis
  • * The Birmingham Orthopaedic Oncology Meeting in January 2024 gathered 300 experts from over 50 countries to reach global consensus on chondrosarcoma treatment and address challenges related to periprosthetic joint infection in cancer surgeries.
  • * The meeting aimed to not only resolve current controversies but also to encourage collaboration among specialists for future research that could improve patient outcomes worldwide.
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Objective: Influenza is among the most important respiratory infections affecting all age groups and can lead to hospitalizations. We aimed to determine the frequency of influenza infections among acute admissions with influenza-like illness (ILI) and evaluate the demographic, clinical findings, and outcomes of patients with influenza.

Methods: This prospective, active surveillance study was conducted in a university hospital between 2015 and 2017.

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Objective: This study aimed to determine the effect of prophylactic use of carbapenems for acute pancreatitis on clinical outcomes.

Materials And Methods: It was conducted according to the preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines by using the keywords "Pancrea AND carbapenem OR imipenem OR ertapenem OR meropenem OR doripenem." Primer outcomes were mortality, surgical intervention, and pancreatic and non-pancreatic infection.

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Article Synopsis
  • The study investigated the vaccination status and risk factors for ICU support among inpatients with breakthrough COVID-19 infections, categorizing them as fully or partially vaccinated.
  • A total of 516 patients were analyzed, revealing that hypertension, diabetes, and coronary artery disease were common comorbidities, with fully vaccinated patients showing a significantly lower need for ICU support.
  • The findings suggest that older age, specific health conditions, and incomplete vaccination increase the likelihood of requiring ICU care, highlighting the need for ongoing monitoring and booster vaccinations for at-risk populations.
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This study aimed to evaluate the significance of radiological (magnetic resonance imaging [MRI]) findings, surgical, and previous interventions on prognosis with oncological and functional outcome in patients with parosteal osteosarcoma (POS). Twenty-seven patients (8 male/19 female) who were operated with the diagnosis of primary POS in our institution were retrospectively reviewed. The epidemiological data, biopsy method, misdiagnosis/improper interventions, and delay in diagnosis were noted.

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Article Synopsis
  • The study aimed to assess the vaccine response and impact of the BNT162b2 booster on COVID-19 positivity in haemodialysis (HD) and peritoneal dialysis (PD) patients previously vaccinated with two doses of CoronaVac.
  • A total of 80 PD and 163 HD patients were analyzed for antibody levels at various intervals post-vaccination, noting that all patients receiving the BNT162b2 booster showed seropositivity, while those who received another CoronaVac booster did not.
  • Results suggested that older age increased COVID-19 positivity, but receiving the booster significantly reduced this risk, highlighting the potential need for additional vaccination doses for patients undergoing dialysis.
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Background: The current systematic review aimed to answer the following questions: (i) Does extended curettage combined with the PMMA technique for the treatment of aggressive bone tumors around the knee led to the development of knee osteoarthritis? (ii) What factors are associated with osteoarthritis after bone cementation around the knee joint?

Methods: This study was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. All electronic searches were performed on November 20, 2022, by a single researcher who evaluated the full texts of potentially eligible studies to determine inclusion. In these patients, the presence of osteoarthritis secondary to the surgical procedure was investigated.

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Background: This study was designed to investigate the secondary osteoarthritis rate in patients with benign aggressive bone tumors treated with curettage and cementing at long-term follow up.

Methods: Patients diagnosed with benign aggressive bone tumor (giant cell or aneurysmal bone cyst), treated with extended curettage and cementation with polymethylmethacrylate, who had a minimum of 60 months of follow up after surgery were included in this study. After definitive diagnoses were confirmed by a histopathologist, we decided to perform standard surgical management.

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Background: Gram-negative bloodstream infections (GN-BSIs) are a significant clinical challenge. The utility of follow-up blood cultures (FUBCs) in GN-BSIs and their impact on mortality and antibiotic consumption are areas of debate. This study aimed to evaluate the effect of FUBCs on mortality and antibiotic consumption in patients with GN-BSIs.

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Introduction: Combination techniques, which encompass the combined use of vascularized bone grafts with massive allografts or autografts (recycled bone grafts), are especially important in the biological reconstruction of tumor-related lower extremity long bone defects. Liquid nitrogen recycled bone (frozen autograft) and free vascular fibula graft (FVFG) combination, which was coined as the "frozen hotdog (FH)" method by the authors, has not been as widely used nor its outcomes reported for significantly sized patient groups. This study aims to provide an answer to whether FH is a safe and effective reconstructive tool for limb salvage in malignant tumors of the lower extremity regarding radiological, functional, and oncological outcomes.

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Introduction And Importance: Total knee arthroplasty (TKA) in the neuropathic unstable knee (NUK) setting is classically a challenging orthopedic problem due to intraoperative technical difficulties and a higher frequency of periprosthetic complications. More recently, satisfactory results have been reported using improved constraints, stems and revision-type TKA components. The study aims to present long-term results of a small case series with NUK osteoarthritis reconstructed by a condylar, semi-constrained prosthesis with a polygonal, hydroxyapatite-coated (HA-coated) press-fit stem.

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This study aims to evaluate the clinical pharmacist's contribution impact on the appropriate use of colistin. Our study was conducted prospectively in patients in the Internal Diseases Intensive Care Unit of Gazi University Medical Faculty Hospital for eight months. The first four months of the study were with the observation group, while the next four months were with the intervention group.

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Objective: The aim of the study is to investigate the role of whole-body magnetic resonance imaging (MRI) in assessing extrapulmonary metastases in primary osteosarcoma staging.

Methods: We retrospectively reviewed medical data to identify primary osteosarcoma patients with available preoperative whole-body MRI obtained in the staging or restaging. Histopathology was the reference test for assessing the diagnostic performance, if available.

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Objective: Accurate determination of life expectancy becomes very important when determining the treatment of patients with pathologic fractures. We aimed to investigate the predictive role of the PATHFx model in Turkish patients by estimating the area under curve (AUC) of the receiver operator characteristic (ROC) and externally validating the results of PATHFx on the Turkish population.

Methods: The data of 122 patients who presented to one of four orthopaedic oncology referral centres in Istanbul (2010-2017) and underwent surgical management of pathologic fractures were retrospectively collected.

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Objective: There are many difficulties in diagnosing and treating bacteremia. In this study, we aimed to evaluate "true" and "false-positive bacteremia" and assess mortality risk factors and the impact of different treatment regimens.

Materials And Methods: Hospitalized adult patients with -positive blood cultures were assessed by a two-stage analysis.

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