İstanbul Sağlık ve Teknoloji Üniversitesi Kurumsal Akademik Arşivi
DSpace@İSTÜN, Üniversite mensupları tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Machine learning insights into nurse retention through job satisfaction and financial incentives
(Frontiers Media S. A., 2026) Atılgan Sarıdoğan, Ayşe; Küçükgergerli, Nabi; Ertürk, Muzaffer; Emeç, Murat; Yaman, Adem
The global nursing shortage has reached a critical inflection point, where the financial sustainability of healthcare institutions is increasingly determined by their ability to maintain a stable, high-quality workforce. This study investigates the structural determinants of nurse staffing quality—operationalized as an institutional-level proxy for retention capacity—by integrating financial incentives, workload demands, and job-satisfaction metrics into an advanced machine-learning framework. Using the comprehensive CMS Provider Information dataset (N = 15,640 nursing facilities), we developed and validated a predictive architecture comparing Random Forest, Support Vector Machines, and Histogram-based Gradient Boosting (HGB) models. Our analysis reveals a clear hierarchy of influence: while Financial Incentives and penalties (Total Fines, importance weight: 0.083) and Job Satisfaction Proxies (QM Rating, 0.079) serve as significant secondary drivers, the primary boundaries of staffing stability are governed by Workload and capacity constraints, specifically the Number of Residents (0.309) and Number of Certified Beds (0.287). The Gradient Boosting model emerged as the superior predictive tool (Balanced Accuracy: 0.42; Macro F1: 0.41), demonstrating that institutional scale and patient volume are the dominant predictors of staffing quality ratings. These findings suggest that financial interventions alone are insufficient; sustainable nurse retention requires a dual-strategy that aligns fiscal incentives with rigorous workload management and capacity optimization. By identifying these high-impact variables and explicitly acknowledging the limitations of proxy-based operationalization, this research provides a data-driven roadmap for policymakers and healthcare executives to mitigate turnover and enhance the financial and operational resilience of nursing care systems.
Preliminary effects of MBCT on coping, self-compassion, and empowerment in early-stage breast cancer
(Selcuk University Press, 2026) Savaş, Esra
Aim: The objective of the study was to evaluate the effects of a Mindfulness-Based Cognitive Therapy (MBCT) program on coping attitudes, self-compassion, and cancer-related empowerment among women diagnosed with early-stage breast cancer. Materials and Methods: Eighty women with stage 0–II breast cancer were assigned to either an intervention group (n = 40) or a control group (n = 40). The intervention group completed an eight-week group-based MBCT program, while the control group received a single three-hour informational seminar after the completion of the intervention group program. All participants completed the Coping Attitudes Scale, the Self-Compassion Scale–Short Form, and the Cancer Empowerment Scale from pre-to-post. Due to violations of normality assumptions, data were analyzed using Wilcoxon signed-rank tests and Mann–Whitney U tests. False discovery rate correction was applied to control for multiple comparisons. Results: Significant improvements were observed in coping attitudes, self-compassion, and empowerment levels within the intervention group (p < .05). Notably, the increase in self-compassion may be attributed to the gender- and culturally sensitive structure of the intervention delivered in the Turkish context. Compared with the control group, the intervention group showed sizable pre to post gains (CAS: 83.9→115.4; SCS SF: 19.9→39.8; CES: 154.4→160.8), while controls showed minimal change or decline (CAS: 84.3→80.9; SCS SF: 24.0→25.2; CES: 151.0→140.2); group differences favored MBCT at post test (FDR adjusted p’s ≤ .005). Conclusion: These findings suggest that mindfulness-based group interventions may serve as an effective psychosocial approach for supporting psychological well-being in female cancer patients. In addition to reducing psychological symptoms, the MBCT program enhanced coping flexibility and internal empowerment. These preliminary findings warrant consideration of culturally sensitive MBIs within oncology services; however, time matched randomized trials are required before making firm recommendations.
Traumatic fibroma of the gingiva in a child: 4-year follow-up
(Cumhuriyet University Faculty of Dentistry, 2025) Taşdemir, Tülin; Erbaş Ünverdi, Gizem; Çehreli, Zafer Cavit
This case report presents a 3-year-old boy referred to the Department of Pediatric Dentistry with a hyperplastic soft tissue lesion in the maxillary anterior region, present for six months. The lesion began as small and gradually enlarged without pain or bleeding, as reported by the parents. The lesion was treated with surgical excision under local anesthesia. Histopathological analysis confirmed a diagnosis of traumatic fibroma, a benign reactive lesion often associated with chronic irritation. Postoperative recovery was uneventful, but recurrence was observed at one year, presenting as small punctate lesions. Over a subsequent four-year follow-up, no further growth was noted. This case highlights the importance of accurate diagnosis and long-term monitoring of reactive oral lesions in pediatric patients, given their potential for recurrence.
Protective roles of gallic acid and lycopene against 4-nonylphenol induced testicular damage in SD rats
(SAGE Publications, 2026) Güleş, Özay; Kum, Şadiye; Naseer, Zahid; Boyacıoğlu, Murat; Özel Armutoğlu, Emine; Yıldız, Mustafa; Kırıkkulak, Murat; Doğan, Göksel; Bilici, Esra; Türkmen, Aybike; Tuna, Bilginer; Eren, Ülker
4-Nonylphenol (4-NP), an endocrine disruptor, is known to induce mutagenic, toxic, or carcinogenic effects, including testicular toxicity via inducing oxidative stress and apoptosis. The objective of this work was to determine the capacity of lycopene (LC) and gallic acid (GA) to protect testicular histological structure, biochemical responses, and semen parameters in rats exposed to 4-NP. In this 28-day dietary trial, six groups (n= 6 per group) received treatment via oral gavage: a control (corn oil, 2 mL/kg/day), LC (10 mg/kg body weight (BW)/day), GA (50 mg/kg BW/day), 4-NP (125 mg/kg BW/day), LC + 4-NP (LC followed by 4-NP), and GA + 4-NP (GA followed by 4-NP) groups. The results indicated that 4-NP administration adversely affects the final body weight, testicular histology, seminiferous epithelium heights (SEHs) (4-NP: 57.95 ± 0.49, p: 0.000), follicle-stimulating hormone (FSH) level, testis antioxidant capacity, testis malondialdehyde (MDA) level, and sperm viability and morphology. LC and GA supplementation significantly improved SEHs, activities of testis superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH), and sperm viability compared to the 4-NP group. Moreover, LC and GA exposures decreased histopathological lesions, including germinal epithelial degeneration, vacuolization, immature germ cells in the tubular lumen, and congestion in the interstitial area. Furthermore, they lowered TUNEL-positive cell counts and tubule percentages, testicular MDA levels, and abnormal sperm percentages. To our knowledge, this study provides one of the first systematic comparisons of lycopene and gallic acid in protecting against 4-NP-induced testicular toxicity under identical experimental conditions. The findings suggest that both compounds preserve testicular structure and function through their antioxidant and anti-apoptotic properties.
Efficacy-oriented approach for medium-sized follicles: A perspective on stimulation, expectation, and triggering strategy in IVF cycles
(Wiley, 2026) Aydın, Gerçek; Ergin, Elif; Araç, Merve; Bülbül, Mehmet; Çalışkan, Eray; Hatırnaz, Şafak; Dahan, Michael; Malvasi, Antonio; Tinelli, Andrea
Objective: To assess the therapeutic significance of routinely aspirating mid-sized fol licles (14.0–16.9 mm) during oocyte pick-up (OPU) by looking at procedural efficiency and embryo usage in cycles with varied follicular cohorts. Methods: In vitro fertilization (IVF) cycles with follicles classified as large (≥17 mm) or mid-sized (14.0–16.9 mm) at the time of OPU were included in this prospective cohort. Each group's oocytes were extracted and treated independently while main taining rigorous traceability. Analysis was performed on embryologic results, opera tive time factors, and embryo transfer utilization across successive transfer attempts. Pregnancy outcomes and the length of the operation were investigated. Laboratory results pertaining to trigger strategies were assessed descriptively. Results: When measured per mature oocyte, oocytes from mid-sized follicles showed comparable fertilization and blastocyst development rates. However, only a small percentage of embryo transfers included embryos from mid-sized follicles, especially in the initial two transfer attempts. Large follicles had a longer total OPU duration, and cycles that resulted in miscarriage had significantly longer operative times among large-follicle-derived embryo transfers. For mid-sized follicles, there were no differ ences in the length of the procedure based on the pregnancy outcome. Conclusion: The contribution of mid-sized follicle-derived oocytes to embryo trans fer selection seems to be restricted in everyday practice, despite their reassuring laboratory competence. Procedural efficiency is a potentially significant factor in customized IVF care, as evidenced by the correlation between longer operating times and worse clinical outcomes. In certain clinical situations, a focused stimula tion and aspiration approach might be suitable without obviously jeopardizing cu mulative results.
