共查询到20条相似文献,搜索用时 15 毫秒
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Technical feasibility and safety of image‐guided parieto‐occipital ventricular catheter placement with the assistance of a wearable head‐up display 下载免费PDF全文
Jang W. Yoon Robert E. Chen Karim ReFaey Roberto J. Diaz Ronald Reimer Ricardo J. Komotar Alfredo Quinones‐Hinojosa Benjamin L. Brown Robert E. Wharen 《The international journal of medical robotics + computer assisted surgery : MRCAS》2017,13(4)
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Anusha Balasubramanian Vigneshwar Paleri Robin Bennett Vinidh Paleri 《Head & neck》2020,42(7):1638-1644
Unprecedented times call for extraordinary measures. While surgeons across the globe try to comprehend the evolving facade of the COVID‐19 pandemic and improvise surgical practice to the best of their ability, the psychological impact of the stress on their own mental health and well‐being has been underestimated. This paper aims to review the indirect and overt factors that may affect the mental health of a surgeon in the present circumstances. Furthermore, it will aim to highlight key coping mechanisms at an individual and institutional level, so as to mitigate the negative psychological impact on surgeons. 相似文献
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Yoshiyuki Sakawa 《Optimal control applications & methods.》1999,20(5):235-248
In this paper, we consider the planar motion of a free‐flying robot equipped with the jet thrust mechanism. Based on the non‐linear equations of motion of the free‐flying robot, we calculate the optimal control such that the fuel consumption is minimized and that the given terminal condition is satisfied at the end of motion. We use Sakawa–Shindo algorithm for calculating the optimal control, which was derived on the basis of Pontryagin's maximum principle. The computational results are satisfactory and show that the algorithm works well. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
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Ellen Melbye Langballe Siw Tone Innstrand Olaf Gjerløw Aasland Erik Falkum 《Stress and health》2011,27(1):73-87
The purpose of this study was to examine physician burnout in association with individual factors, work characteristics and work–home interaction (job performance‐based self‐esteem, goal orientation, value congruency, workload, autonomy, work–home conflict and work–home facilitation). This two‐wave panel study includes a sample of Norwegian physicians collected in 2003 (N = 683) and 2005 (N = 523). Hierarchical multiple regression analysis was used to test the assumed effects in male and female physicians separately. The results imply that many of the assumed predictors play significant parts in physician burnout. A noticeable finding was that the pattern and strength of significant effects differed within the separate analyses of men and women. Work–home conflict was a particularly strong burnout predictor in female physicians whereas workload was the strongest burnout predictor in male physicians. The findings may have implications when planning future interventions. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Yu‐Hwa Huang Pey‐lan Du Chin‐Hui Chen Chin‐Ann Yang Ing‐Chung Huang 《Stress and health》2011,27(2):e94-e109
This study attempted to investigate the role of emotional exhaustion as a mediator on the relationship between job demands–control (JDC) model and mental health. Three‐wave data from 297 employees were collected. The results showed that job demands were positively related to emotional exhaustion, and increasing job demands will increase the level of emotional exhaustion. Job control was negatively associated with emotional exhaustion; therefore, increasing job control will decrease the level of emotional exhaustion. Emotional exhaustion was negatively related to mental health. Emotional exhaustion fully mediated the relationship between job demands and mental health, and partially mediated the positive relationship between job control and mental health. In addition, job control was positively associated with mental health directly. The remarkable finding of the present study was that emotional exhaustion served as the key mediator between the JDC model and mental health. Theoretical and managerial implications and limitations were discussed. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Comparative investigation on clinical outcomes of robot‐assisted radical prostatectomy between experienced open prostatic surgeons and novice open surgeons in a laparoscopically naïve center with a limited caseload 下载免费PDF全文
Makoto Sumitomo Kent Kanao Yoshiharu Kato Takahiko Yoshizawa Masahito Watanabe Kenji Zennami Kogenta Nakamura 《International journal of urology》2015,22(5):469-474
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Stinus Hansen Ellen M Hauge Jens‐Erik Beck Jensen Kim Brixen 《Journal of bone and mineral research》2013,28(4):736-745
Whereas the beneficial effects of intermittent treatment with parathyroid hormone (PTH) (intact PTH 1–84 or fragment PTH 1–34, teriparatide) on vertebral strength is well documented, treatment may not be equally effective in the peripheral skeleton. We used high‐resolution peripheral quantitative computed tomography (HR‐pQCT) to detail effects on compartmental geometry, density, and microarchitecture as well as finite element (FE) estimated integral strength at the distal radius and tibia in postmenopausal osteoporotic women treated with PTH 1–34 (20 µg sc daily, n = 18) or PTH 1–84 (100 µg sc daily, n = 20) for 18 months in an open‐label, nonrandomized study. A group of postmenopausal osteoporotic women receiving zoledronic acid (5 mg infusion once yearly, n = 33) was also included. Anabolic therapy increased cortical porosity in radius (PTH 1–34 32 ± 37%, PTH 1–84 39 ± 32%, both p < 0.001) and tibia (PTH 1–34 13 ± 27%, PTH 1–84 15 ± 22%, both p < 0.001) with corresponding declines in cortical density. With PTH 1–34, increases in cortical thickness in radius (2.0 ± 3.8%, p < 0.05) and tibia (3.8 ± 10.4%, p < 0.01) were found. Trabecular number increased in tibia with both PTH 1–34 (4.2 ± 7.1%, p < 0.05) and PTH 1–84 (5.3 ± 8.3%, p < 0.01). Zoledronic acid did not impact cortical porosity at either site but increased cortical thickness (3.0 ± 3.5%, p < 0.01), total (2.7 ± 2.5%, p < 0.001) and cortical density (1.5 ± 2.0%, p < 0.01) in tibia as well as trabecular volume fraction in radius (2.5 ± 5.1%, p < 0.05) and tibia (2.2 ± 2.2%, p < 0.01). FE estimated bone strength was preserved, but not increased, with PTH 1–34 and zoledronic acid at both sites, whereas it decreased with PTH 1–84 in radius (?2.8 ± 5.8%, p < 0.05) and tibia (–3.9 ± 4.8%, p < 0.001). Conclusively, divergent treatment‐specific effects in cortical and trabecular bone were observed with anabolic and zoledronic acid therapy. The finding of decreased estimated strength with PTH 1–84 treatment was surprising and warrants confirmation. © 2013 American Society for Bone and Mineral Research. 相似文献
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Kyung Sun Park Jung‐ho Shin Hye Ryoun Jang Jung Eun Lee Woo Seong Huh Yoon Goo Kim Ha Young Oh Dae Joong Kim 《Clinical transplantation》2014,28(9):953-960
Living‐unrelated donors (LURD) have been widely used for kidney transplantation (KT). We retrospectively reviewed 779 patients who underwent living‐donor KT from 2000 to 2012, to compare outcomes of 264 KT from LURD and 515 from living‐related donors (LRD), and to identify risk factors for living KT. Median follow‐up was 67 months. Mean donor age, total human leukocyte antigen (HLA) mismatches, and HLA–DR mismatches were higher, and mean estimated glomerular filtration rate (eGFR) was lower in LURD. Acute rejection (AR)‐free survival (p = 0.018) and graft survival (p = 0.025) were lower for LURD than LRD, whereas patient survival rate was comparable. Cox regression analysis showed HLA–DR mismatches (OR 1.75 for one mismatch; OR 2.19 for two mismatches), recipient age ≤ 42 yr, and donor age > 50 yr were significant risk factors for acute rejection. For graft survival, AR and donor eGFR (OR 1.90, p = 0.035) were significant. We also identified significant impact of recipient age > 50 yr and diabetes for patient survival. However, KT from LURD was not a significant risk factor for AR (p = 0.368), graft survival (p = 0.205), and patient survival (p = 0.836). Our data suggest that donor eGFR and donor age are independent risk factors for clinical outcomes of living KT, which can be related with poor outcome of KT from LURD. 相似文献
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Adriana Lozano‐Platonoff Jose Contreras‐Ruiz Judith Dominguez‐Cherit Andrea Cardenas‐Sanchez Valeria Alvarez‐Rivero Joel A. Martínez‐Regalado 《International wound journal》2020,17(1):167-173
The aim of this study was to translate into Mexican Spanish, cross‐culturally adapt and validate the wound‐specific quality of life (QoL) instrument Cardiff wound impact schedule (CWIS) for Mexican patients. This instrument went through the full linguistic translation process based on the guidelines of Beaton et al (Beaton DE, Bombardier C, Guillemin F, Ferraz MB, Guidelines for the process of cross‐cultural adaptation of self‐report measures, Spine Phila Pa, 1976, 2000, 318‐391). We included a total of 500 patients with chronic leg ulcers. The expert committee evaluated the Face validity and they agreed unanimously that the instrument was adequate to assess the QoL of these patients, covering all relevant areas presented by them. The content validity index obtained was of 0.95. The construct validity demonstrated moderately significant correlations between related sub‐scales of CWIS and SF‐36 (P = .010 to P < .001). The instrument was able to discriminate between healed and unhealed ulcers. The instrument obtained an overall Cronbach's alpha of .952, corresponding to an excellent internal consistency (.903‐.771 alpha range for domains). The CWIS can be appropriately used to assess the health‐related QoL of Mexican patients with chronic leg ulcers. 相似文献
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Impact of antiviral prophylaxis in adults Epstein–Barr Virus‐seronegative kidney recipients on early and late post‐transplantation lymphoproliferative disorder onset: a retrospective cohort study 下载免费PDF全文
Simon Ville Berthe‐Marie Imbert‐Marcille Marianne Coste‐Burel Claire Garandeau Aurélie Meurette Diego Cantarovitch Magali Giral Maryvonne Hourmant Gilles Blancho Jacques Dantal 《Transplant international》2018,31(5):484-494
Post‐transplantation lymphoproliferative disorder (PTLD ) pathogenesis is related to EBV infection. Mismatch with the donor (EBV D+/R?) is the main risk factor for both early PTLD (<1 year post‐transplantation) and late (>1 year). In these at‐risk patients, the role of antiviral prophylaxis for preventing PTLD remains controversial. We analyzed the impact of antiviral drugs given to prevent CMV disease in a monocentric retrospective cohort of 73 adult kidney or kidney–pancreas EBV ‐seronegative recipients, transplanted between 01/01/2000 and 01/01/2016. Thirty‐seven (50.7%, prophylaxis group) received (val‐)aciclovir or (val‐)ganciclovir for 3–6 months and 36 (49.3%, no‐prophylaxis group) received no‐prophylaxis. Mean follow‐up was 69 ± 7.2 months in the prophylaxis group and 91 ± 10.3 months in the no‐prophylaxis group. Monitoring of EBV PCR revealed that prophylaxis delayed primary infection at 100 days (43% vs. 84%, P = 0.02). Early PTLD incidence was not different between groups (4/37 vs. 4/36, P = 0.99). Concerning late events, EBV ‐related neoplasia incidence was significantly lower in treated patients among whom no cases were observed, while in the no‐prophylaxis group 6 cases were reported (P = 0.02). Despite a weak level of evidence our study suggests that antiviral prophylaxis could prevent late onset PTLD . 相似文献
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Insignificant role of bacillus Calmette–Guérin maintenance therapy after complete transurethral resection of bladder tumor for intermediate‐ and high‐risk non‐muscle‐invasive bladder cancer: Results from a randomized trial 下载免费PDF全文
Yasushi Nakai Satoshi Anai Nobumichi Tanaka Yoshitomo Chihara Masaki Haramoto Takeshi Otani Yoshinori Nakagawa Yoshihiko Hirao Noboru Konishi Kiyohide Fujimoto 《International journal of urology》2016,23(10):854-860
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Mixed H2/H∞ control for a class of nonlinear discrete‐time networked control systems with random delays and stochastic packet dropouts 下载免费PDF全文
Yanqian Wang Junwei Lu Shuyu Zhang Yuming Chu 《Optimal control applications & methods.》2015,36(6):825-843
The paper studies the problem of mixed H2/H∞ control for a class of nonlinear discrete‐time networked control systems. By using the indicator function method, random network‐induced delays and stochastic packet dropouts are taken into account in a unified framework in the designed mixed H2/H∞ controller. In the presences of random transmission delays, stochastic packet dropouts and all admissible disturbances, the resulting closed‐loop system is stochastically stable in mean square and attains the prescribed H2 and H∞ performances. The designed mixed H2/H∞ controller can be obtained by solving a set of feasible linear matrix inequalities. Finally, a numerical example is provided to show the usefulness and effectiveness of the developed method. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献