4 results on '"Ünal, Aysun"'
Search Results
2. Comparison of retinal nerve fibre layer thickness with visual evoked potential and visual field in patients with multiple sclerosis
- Author
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Alpay, Atilla, Guney, Tuncer, Ünal, Aysun, and Uğurbaş, Suat H.
- Subjects
retinal nerve fibre layer ,genetic structures ,Neuritis ,Scanning Laser Polarimetry ,Vision ,Diagnosis ,Axonal Loss ,standard automated perimetry ,visual evoked potential ,Optical Coherence Tomography ,multiple sclerosis ,eye diseases - Abstract
Background: To evaluate retinal nerve fibre layer thickness and to compare results with visual evoked potentials and visual field in patients with multiple sclerosis. Design: A prospective, case-control study, university hospital setting. Participants: Seventy-three eyes of 37 multiple sclerosis patients and 74 eyes of 37 healthy subjects. Methods: All patients underwent a complete neurological and ophthalmological examination and peripapillary retinal nerve fibre layer thickness was evaluated using scanning laser polarimetry (GDx). Furthermore, visual evoked potential and visual field testing were performed. Main Outcome Measures: The chi(2) test, Student's t-test, Mann-Whitney U-test and Pearson's correlation coefficient analysis of the GDx, visual evoked potential and visual field testing parameters. Results: GDx measurements showed significantly more retinal nerve fibre layer damage in the patients than in the control groups. Comparison of the GDx parameters between patients with optic neuritis and non-optic neuritis demonstrated a statistically significant difference in symmetry (P = 0.046) and superior/nasal parameters (P = 0.009). A correlation was found between the number, superior and inferior ratio parameters, and P100 amplitude obtained with visual evoked potential in patients with non-optic neuritis. Additionally, there was a correlation between the number, inferior ratio and superior/nasal parameters, and the mean deviation of visual field in the non-optic neuritis group. Conclusions: For retinal nerve fibre layer thickness measurements in multiple sclerosis patients, the GDx, along with other techniques, such as visual evoked potential, can be used as a diagnostic and follow-up criterion, particularly in patients without optic neuritis. Department of Ophthalmology, the School of Medicine, Zonguldak Karaelmas University, Zonguldak, TurkeyBulent Ecevit University We express our sincere gratitude for support and valuable contributions to Dr Sebnem Hanioglu Kargi from Department of Ophthalmology, the School of Medicine, Zonguldak Karaelmas University, Zonguldak, Turkey. This article is dedicated to Dr Sebnem Hanioglu Kargi, who passed away before the completion of this paper.
- Published
- 2012
3. Investigation of the Relationship Between Perceived Leadership Behaviours of Nurses and Hospital Safety Culture: A Study With the Structural Equation Model.
- Author
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Ünal A, Yıldırım N, and Öncel S
- Subjects
- Humans, Adult, Female, Male, Surveys and Questionnaires, Attitude of Health Personnel, Latent Class Analysis, Turkey, Nurse Administrators psychology, Middle Aged, Leadership, Organizational Culture, Nursing Staff, Hospital psychology, Patient Safety, Safety Management
- Abstract
Background: Work environments that support patient safety initiatives are important for quality service and patient outcomes. The relationship between the leadership behaviours of nurse managers and safety culture, which has the potential to support these initiatives, constitutes one of the most important knowledge gaps., Objectives: The study aimed to determine the relationship between nurses' perceived leadership behaviours and hospital safety culture and the factors affecting them., Design: We tested the theoretical model using structural equation modelling with the AMOS 21 program., Methods: The research was conducted with 134 nurses in two public hospitals in the south of Türkiye. Data were collected between October and December 2021 using the Leadership Behaviour Questionnaire and the Patient Safety Culture Hospital Questionnaire. Descriptive statistical analysis used to evaluate the data of the study. Structural equation modelling analysis and confirmatory factor analysis performed to test the research hypotheses., Results: The study found that non-punitive attitudes towards the mistakes had a full mediating effect on overall perception of safety interaction with employee-oriented leadership and high-level hospital interventions (β = -0.510, 95% CI -1.006/-0.076), and change had partly mediating effect on overall perception of safety interaction with change-oriented leadership (β = -0.510, 95% CI -1.043/-0.053)., Conclusions: It is clear that if nurse managers are to improve the staff's patient safety culture, they should develop change-oriented leadership skills by identifying adverse events and risks and motivating staff to learn from errors without taking punitive measures. In this context, healthcare organizations should evaluate the leadership qualities of managers. Managers at all levels can make plans to develop leadership behaviours that will play a facilitating role in improving patient safety., (© 2025 John Wiley & Sons Australia, Ltd.)
- Published
- 2025
- Full Text
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4. Patient safety in the pandemic: Experiences of charge nurses.
- Author
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Ünal A, Öncü YA, and Arikan E
- Subjects
- Humans, Nursing Staff, Hospital psychology, Pandemics, Adult, Female, SARS-CoV-2, Male, Qualitative Research, COVID-19 nursing, COVID-19 epidemiology, Patient Safety
- Abstract
Aim: The aim of this study was to identify charge nurses' experiences ensuring patient safety during the coronavirus disease 2019 (COVID-19) pandemic., Methods: The research was conducted with charge nurses between July 2021 and February 2022. Research data were collected using a semi-structured interview with two main questions, six sub-questions and an audio recording. Interviews were conducted with 12 charge nurses and lasted ≈30 min. The content analysis method was used to transfer the collected data to written documents and define them to analyse the individual interview data. Content analyses were conducted independently by three different researchers. Inclusion and exclusion criteria for content were established to ensure consistency among all researchers. Researchers independently developed a coding scheme for content analysis based on the research objectives and applied it to the content. Intercoder reliability was assessed with Cohen's kappa coefficient to measure the consistency of coding among researchers., Results: Three main themes were identified as a result of the content analysis. The themes identified after independent examination by the three researchers were 'ensuring safety and protection', 'sustaining motivation and resilience' and 'organizational restructuring and challenges'., Conclusions: This study highlights the challenges faced by charge nurses during the COVID-19 pandemic and their critical role in maintaining patient safety. The findings emphasize the importance of organizational adaptability, continuous motivation and comprehensive risk management strategies. Charge nurses played a key role in enhancing safety measures and fostering a culture of resilience among healthcare staff. Moving forward, these insights should guide health policies and practices to better prepare for future public health crises, ensuring the safety of both patients and staff., (© 2024 John Wiley & Sons Australia, Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
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