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    Öğe
    Bacterial Contamination of Needles Used for Intravitreal Injections: Comparison between 27-gauge and 30-gauge Needles
    (Informa Healthcare, 2013) Tufan, Hasan Ali; Vural, Ahmet; Gencer, Baran; Kara, Selcuk; Arikan, Sedat; Yuksel, Erdem
    Purpose: To compare the contamination rate between 27-gauge and 30-guage needles used for intravitreal injection (IVT). Methods: Patients undergoing IVT injections were enrolled prospectively. Injections were performed with 27- or 30-gauge needles. All needle tips were collected and placed in brain-heart infusion broth. The contamination rates of needles were compared. Results: A total of 109 patients participated in the study and a total of 126 IVT injections were performed. Injections were performed by 27-gauge (49%) and 30-gauge (51%) needle. No patient developed endophthalmitis. The overall contamination rate of the used needles were 13% for 27-guage and 29% for 30-guage (p = 0.022). However, this difference was nonsignificant after Bonferroni's correction was applied. The most common bacteria isolated from the used needles are coagulase-negative Staphylococcus (CNS). Conclusion: The results suggest that the needle bore size seems not to be a risk factor for contamination during IVT injection.
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    Öğe
    Human-Derived Fibrin Glue: In Vitro Antibacterial Effects and Antibiotic Permeation
    (Turkish Ophthalmological Soc, 2014) Yuksel, Erdem; Akata, Fikret; Yuksel, Nilay; Tufan, Hasan Ali; Mert, Bedia Dinc
    Objectives: This study investigated the in vitro antibacterial efficacy and antibiotic permeation of human-derived fibrin glue (FG). Materials and Methods: FG was prepared under sterile conditions by the Blood Bank of Gazi University Faculty of Medicine. In this study, cultivations were performed in 5 main groups: Group 1 (control) - only FG; Group 2a (control) - pure Staphylococcus aureus (SA) and Group 2b (control) - pure Staphylococcus epidermidis (SE); Group 3a (control) - SA+ antibiotic and Group 3b ( control) SE+ antibiotic; Group 4a - FG+SA and Group 4b - FG+SE; Group 5a - FG+SA+ antibiotic and Group 5b - FG+SA+ antibiotic. Results: Group 1 showed no bacterial growth, whereas Group 2a and Group 2b, Group 4a and Group 4b showed bacterial growth. Group 5a and Group 5b showed no growth. Conclusion: Although FG has no antibacterial efficacy in vitro, it may be used safely due to antibiotic permeation in diseases with either infected or non-infected ocular surface that require suturing.