8 results on '"Bayer N"'
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2. Comparison of two digital alignment systems for toric intraocular lens implantation.
- Author
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Zeilinger J, Schlatter A, Ruiss M, Bayer N, Kronschläger M, and Findl O
- Subjects
- Humans, Prospective Studies, Female, Male, Middle Aged, Aged, Lenses, Intraocular, Reproducibility of Results, Astigmatism surgery, Adult, Phacoemulsification methods, Surgery, Computer-Assisted methods, Surgery, Computer-Assisted instrumentation, Visual Acuity physiology, Cataract, Lens Implantation, Intraocular methods, Lens Implantation, Intraocular instrumentation
- Abstract
Purpose: To compare the two most used digital alignment systems regarding precision, repeatability and loss of track., Methods: 15 eyes of 15 patients older than 21 years with cataracts were included in this prospective study. The two systems were intraoperatively superimposed and recorded, and the alignment of the two displayed alignment axes was analysed regarding precision, repeatability and loss of track., Results: There was a significant difference in precision and repeatability between the two digital alignment systems regarding the projected alignment axis. The deviation from the actual target axis was significantly different, with a mean of 0.34°±0.75° for the Zeiss system and 1.60°±1.08° for the Alcon system (p=0.03, n=14). The within-subject SD was significantly lower with 0.21° for the Zeiss system and 0.34° for the Alcon system (p=0.03, n=14)., Conclusions: The Zeiss Callisto system showed a significantly lower deviation from the target axis, higher stability with eye movements and less need for microscope illumination than the Alcon system. Both systems showed high precision when compared with manual marking methods., Trial Registration Number: NCT05220683., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2024
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- View/download PDF
3. Influence of Sutureless Scleral Fixation Techniques With 3-Piece Intraocular Lenses on Dislocation Force.
- Author
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Zeilinger J, Kronschläger M, Schlatter A, Ruiss M, Bayer N, and Findl O
- Subjects
- Humans, Sutureless Surgical Procedures methods, Tissue Donors, Biomechanical Phenomena, Sclera surgery, Lenses, Intraocular, Artificial Lens Implant Migration surgery, Lens Implantation, Intraocular methods, Suture Techniques
- Abstract
Purpose: To compare 4 different secondary intraocular lens (IOL) fixation techniques regarding the least required force to dislocate a scleral fixated 3-piece IOL in human corneoscleral donor tissue., Design: Experimental laboratory investigation., Methods: The least required dislocation force (LRDF) of 4 different secondary IOL fixation techniques, namely, the techniques using transscleral tunnels (TTs; as described by Scharioth), glued haptics (GHs; Agarwal), flanged haptics (FHs; Yamane), and bent haptic ends (BH; Behera/Bolz), were investigated using 40 three-piece IOLs (Sensar AR40) fixated to human scleral tissue. The main outcome of the study, dislocation force between different techniques, was measured with a tensiometer., Results: The force needed to dislocate the haptics was highest with the FH technique and was significantly higher than with all the other techniques (GH vs FH: -1.02±0.02 N, P < .001; TT vs FH: -1.08±0.21 N, P < .001; BH vs FH: -1.00±0.25 N, P = .044). There was no significant difference regarding the dislocation force between the other techniques: GH vs TT (-0.06±0.100 N, P = .988), GH vs BH (-0.02±0.03 N, P = .60), TT vs BH (-0.08±0.04 N, P > .99)., Conclusions: The FH technique as described by Yamane proved to be the strongest form of secondary IOL fixation regarding dislocation force in this in vitro study. The other fixation techniques showed significantly less resistance to axial traction., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
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4. Cognitive Control/Flexibility, Social Isolation, and Intrinsic Job Satisfaction of Intensive Care Unit Nurses.
- Author
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Allahverdi FZ and Bayer N
- Abstract
Although cognitive control and flexibility have been examined in the past, this study examines their relationship in a stressful working environment, focusing on intrinsic job satisfaction using cognitive behavioral theory as a framework. This study examined cognitive factors (cognitive control and cognitive flexibility) and emotional state (intrinsic job satisfaction) while assessing the mediating role of social isolation, an external work environment variable. The study focused on intrinsic job satisfaction with extrinsic job satisfaction as a covariate. A cross-sectional questionnaire method was used. Two hundred and ten nurses from twelve intensive care units participated. Model one examined cognitive control while model two examined cognitive flexibility, accounting for 32% and 38% of the variance in intrinsic job satisfaction, respectively. Model one accounted for 13% of the variance in social isolation through cognitive control and extrinsic job satisfaction while model two accounted for approximately 14.91% of the variance in social isolation through cognitive flexibility and extrinsic job satisfaction. Combining the two models accounted for 17% of the variance in social isolation and 37.4% of the variation in intrinsic job satisfaction. The results emphasize the importance of training nurses in cognitive control and flexibility to increase intrinsic job satisfaction.
- Published
- 2024
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5. An Evaluation of Patient Privacy Protection with Fuzzy Conjoint Analysis-A Case Study from Nurses' Perspective.
- Author
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Gürsel G, Bayer N, Turunç Ö, Çalışkan A, Akkoç İ, Demirci A, Çetin M, and Köroğlu Ö
- Abstract
Background: With the rapid improvement in healthcare technologies, the security and privacy of the most sensitive data are at risk. Patient privacy has many components, even when data are in electronic format. Although patient privacy has extensively been discussed in the literature, there is no study that has presented all components of patient privacy., Methods: This study presents a complete assessment framework, develops an inventory as an assessment tool, and examines the reliability and validity of the inventory. The study was carried out in three phases: conceptual framework development, inventory development, and an evaluation case study. Fuzzy conjoint analysis was used in the evaluation to deal with subjectivity and ambiguity. As a result of the evaluation, the case study institution was given a patient privacy maturity level between 1 and 5, where 1 is the worst and 5 is the best., Results: The case study evaluated the largest hospital in Turkey, which employs 800 nurses. Half of the nurses, 400, participated in the study. According to the literature, healthcare institutions do not invest enough in protecting patients' privacy, and the results of the study support this finding. The institution's maturity level was 2, which is poor., Conclusions: This study measured privacy maturity with many assessment components. The result of the assessment explains to patients and the public whether their data are secure or not. With the implementation of this maturity level, patients have an idea about which institution to choose, and the public can infer the reliability of institutions in terms of patient privacy.
- Published
- 2024
- Full Text
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6. A Modular Cloning Toolkit for the production of recombinant proteins in Leishmania tarentolae .
- Author
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Hieronimus K, Donauer T, Klein J, Hinkel B, Spänle JV, Probst A, Niemeyer J, Kibrom S, Kiefer AM, Schneider L, Husemann B, Bischoff E, Möhring S, Bayer N, Klein D, Engels A, Ziehmer BG, Stieβ J, Moroka P, Schroda M, and Deponte M
- Abstract
Modular Cloning (MoClo) is based on libraries of standardized genetic parts that can be directionally assembled via Golden Gate cloning in one-pot reactions into transcription units and multigene constructs. Here, a team of bachelor students established a MoClo toolkit for the protist Leishmania tarentolae in the frame of the international Genetically Engineered Machine (iGEM) competition. Our modular toolkit is based on a domesticated version of a commercial LEXSY expression vector and comprises 34 genetic parts encoding various affinity tags, targeting signals as well as fluorescent and luminescent proteins. We demonstrated the utility of our kit by the successful production of 16 different tagged versions of the receptor binding domain (RBD) of the SARS-CoV-2 spike protein in L. tarentolae liquid cultures. While highest yields of secreted recombinant RBD were obtained for GST-tagged fusion proteins 48 h post induction, C-terminal peptide tags were often degraded and resulted in lower yields of secreted RBD. Fusing secreted RBD to a synthetic O -glycosylation SP20 module resulted in an apparent molecular mass shift around 10 kDa. No disadvantage regarding the production of RBD was detected when the three antibiotics of the LEXSY system were omitted during the 48-h induction phase. Furthermore, the successful purification of secreted RBD from the supernatant of L. tarentolae liquid cultures was demonstrated in pilot experiments. In summary, we established a MoClo toolkit and exemplified its application for the production of recombinant proteins in L. tarentolae ., Competing Interests: Conflict of Interest: The authors declare that there are no conflicts of interest., (Copyright: © 2024 Hieronimus et al.)
- Published
- 2024
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7. Quality assurance via telephone interviews after cataract surgery: An explorative study.
- Author
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Ruiss M, Pai V, Pilwachs C, Bayer N, Palkovits S, and Findl O
- Subjects
- Humans, Patient Satisfaction, Telephone, Cataract Extraction, Telemedicine, Cataract
- Abstract
Introduction: Cataract surgery is a relatively safe procedure with satisfactory postoperative results in most patients. However, in rare cases severe complications can occur shortly after the intervention. Therefore, patients are advised to undergo an ophthalmological examination postoperatively, which should be performed as soon as possible in case of emergencies. However, exactly when these follow-up visits should take place is still discussed. A time- and cost-saving alternative to this could be short-term postoperative telemedical approaches. The aim of this study was to analyze patient complaints as well as satisfaction with and the best timepoint to perform telephone calls after cataract surgery., Methods: Patients scheduled for cataract surgery received a telephone call on the surgery day or the day after (study group) during which they were asked about complaints or additional examination visits. Patients without telephone calls served as control group. All patients had a follow-up visit one week after the intervention during which a questionnaire was filled out and the study group was asked about their satisfaction with the telephone calls., Results: 181 patients were recruited in this study. Ocular surface problems were the most common postoperative symptom. More than 80% of the patients were very satisfied with the telephone calls, with patients being contacted on the day of surgery being more calmed than those called on the next day. No difference in additional and planned follow-up visits was found between the study and the control group (P > .40). Postoperative patient complaints (Phi 0.372, P < .001) and additional prescribed therapy (Phi 0.480, P < .001) were moderately associated with additional visits., Conclusion: Satisfaction with telephone reviews shortly after cataract surgery was very high and contacting patients on the evening of the day of the procedure could be a time- and cost-saving alternative to short-term in-house follow-up visits., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Ruiss et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2024
- Full Text
- View/download PDF
8. Attaining the optimal flange technique for transscleral capsular bag stabilization using iris hooks.
- Author
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Schlatter A, Kronschläger M, Ruiss M, Bayer N, Blouin S, and Findl O
- Subjects
- Humans, Nylons, Suture Techniques, Iris surgery, Polymers, Sclera surgery, Lens Implantation, Intraocular methods, Lenses, Intraocular
- Abstract
Purpose: To investigate the flange properties of different iris hooks., Setting: Vienna Institute for Research in Ocular Surgery (VIROS), Hanusch Hospital, Vienna, Austria., Design: Laboratory study., Methods: The flanging properties of 4 different iris hooks made from polypropylene (PP), elastic polymer (EP), and nylon were investigated with different heating distances and both with and without forceps gripping. The maximum diameter of the flanges was measured, and the shape of the flanges was evaluated., Results: Although both nylon and EP iris hooks had too small flange diameters for intrascleral fixation, PP iris hooks had a sufficient flange diameter (>330 μm) and mushroom-like shape. Furthermore, in PP hooks, heating distance was directly proportional to flange diameter., Conclusions: The findings of this study suggest that only PP iris hooks are suitable for flanged intrascleral fixation, which is off-label, to secure adequate fixation., (Copyright © 2023 Published by Wolters Kluwer on behalf of ASCRS and ESCRS.)
- Published
- 2024
- Full Text
- View/download PDF
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