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    Comparison of Rapid Antibiotic Susceptibility Test Method Directly from Blood Culture Bottle with Standard Disc Diffusion Method
    (Duzce University Medical School, 2024) Keskin, B.H.; Öksüz, Ş.
    Aim: Early determination of antimicrobial susceptibility of sepsis pathogens is important. In this study, we aimed to compare the standard disc diffusion method with the rapid antimicrobial susceptibility testing (RAST) method performed directly from blood culture bottles. Material and Methods: Bacteria isolated from samples that gave a positive signal on the blood culture device between April 2019 and September 2019 were included in the study, and antimicrobial susceptibilities were determined by the standard disc diffusion method and the RAST method. Categorical agreement, small error, large error, very large error, and area of technical uncertainty ratios were recorded. Results: A total of 103 bacteria including 19 S. aureus, 10 Enterococcus spp. and 24 E. coli, 24 K. pneumoniae, 13 P. aeruginosa, and 13 A. baumannii were included in the study. When the RAST method was compared with the standard disc diffusion method, 100% agreement was found between the methods against imipenem, meropenem, gentamicin, and trimethoprim-sulfamethoxazole in E. coli isolates at all hours evaluated, and against meropenem in K. pneumoniae isolates at the 6th and 8th hour. For S. aureus and P. aeruginosa isolates, very major errors were found in the RAST results. For A. baumannii isolates, 100% agreement between methods was observed for many antibiotics. Conclusion: It was concluded that the RAST method is a simple and inexpensive test for life-threatening infections such as sepsis. It was also felt that similar studies should be carried out with a large number of isolates, as compliance rates vary depending on the bacteria tested. © 2024, Duzce University Medical School. All rights reserved.
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    Evaluation of Clinical Features and Treatment Results of Pediatric Patients With Pre-Diagnosis of COVID-19
    (Duzce University Medical School, 2022) Sav, Nadide Melike; Türay, S.; Özde, Ş.; Öksüz, Ş.
    Aim: The epidemiological characteristics and modes of transmission of coronavirus disease 2019 (COVID-19) in children are not yet fully understood. In this study, it was aimed to evaluate clinical, laboratory, and radiological findings and treatment approaches in patients with negative and positive PCR tests among those with suspected COVID-19 retrospectively. Material and Methods: This study was conducted with 317 patients under 18 years of age, who received outpatient or inpatient treatment with a pre-diagnosis of COVID-19. All patients were assessed for clinical course, disease severity, comorbidity, demographic characteristics, laboratory and radiodiagnostic tests, treatment characteristics, and outcomes. Results: The PCR test was positive in 133 (42%) and negative in 184 (58%) of the patients with suspected COVID-19. There was a history of contact in 78 (58.6%) and 51 (27.7%) of the PCR-positive and negative patients, respectively (p<0.001). While the PCR-negative group had a higher rate of hospitalization (p=0.020), hospital stay was longer in PCR-positive cases (p=0.037). The white blood cell count (p=0.001), platelet count (p=0.037), neutrophil count (p=0.015), and lactate level (p=0.025) were significantly lower in the PCR-positive group. Conclusion: Early detection and isolation of children with symptoms suggestive of COVID-19 are important to limit the spread of the disease. It can be challenging initially to clinically understand whether the case has COVID-19, especially in pediatric patients. PCR test is the gold standard in the diagnosis of COVID-19. Considering the prevalence, severity, and complications of the outbreak, it would be a proper approach to initially evaluate suspected patients as COVID-19 patients. © 2022, Duzce University Medical School. All rights reserved.