全文获取类型
收费全文 | 864篇 |
免费 | 5篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 74篇 |
妇产科学 | 25篇 |
基础医学 | 78篇 |
口腔科学 | 32篇 |
临床医学 | 85篇 |
内科学 | 158篇 |
皮肤病学 | 35篇 |
神经病学 | 40篇 |
特种医学 | 20篇 |
外科学 | 138篇 |
综合类 | 20篇 |
预防医学 | 24篇 |
眼科学 | 34篇 |
药学 | 51篇 |
中国医学 | 14篇 |
肿瘤学 | 41篇 |
出版年
2023年 | 2篇 |
2022年 | 8篇 |
2021年 | 39篇 |
2020年 | 8篇 |
2019年 | 141篇 |
2018年 | 100篇 |
2017年 | 58篇 |
2016年 | 7篇 |
2015年 | 1篇 |
2014年 | 19篇 |
2013年 | 17篇 |
2012年 | 12篇 |
2011年 | 14篇 |
2010年 | 11篇 |
2009年 | 8篇 |
2008年 | 9篇 |
2007年 | 12篇 |
2006年 | 10篇 |
2005年 | 5篇 |
2004年 | 6篇 |
2003年 | 5篇 |
2002年 | 10篇 |
2001年 | 11篇 |
2000年 | 6篇 |
1999年 | 3篇 |
1998年 | 1篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 4篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1985年 | 41篇 |
1984年 | 62篇 |
1983年 | 37篇 |
1982年 | 50篇 |
1981年 | 51篇 |
1980年 | 27篇 |
1979年 | 27篇 |
1978年 | 16篇 |
1977年 | 16篇 |
1976年 | 9篇 |
排序方式: 共有873条查询结果,搜索用时 15 毫秒
1.
Managing traumatic liver injury (TLI) is always challenging and demands precise clinical judgment. Currently, treatment of TLI in most circumstances is non-operative; however, surgical therapy might be required for severe TLI, particularly those that result in extensive blood loss. In the current institutional study carried out from June 1995 to April 2017, we describe our experience with 5 patients who received an orthotopic liver transplant for severe TLI. One patient passed away postoperatively from cerebral edema; 1 patient died of renal failure 4 years after the liver transplantation, and 3 patients are still alive. Based on our experience, we conclude that in patients with TLI, especially those with uncontrollable bleeding or those who develop liver failure, liver transplantation should be taken into consideration. 相似文献
2.
Sabin J. Bozso Jeevan Nagendran Roderick G.G. MacArthur Michael W.A. Chu Bob Kiaii Ismail El-Hamamsy Raymond Cartier Ali Shahriari Michael C. Moon 《The Journal of thoracic and cardiovascular surgery》2019,157(5):1763-1771
Objectives
We describe the Canadian results of the Ascyrus Medical Dissection Stent (AMDS), a novel partially uncovered aortic arch hybrid graft implanted antegrade during hypothermic circulatory arrest to promote true lumen expansion and enhance aortic remodeling.Methods
From March 2017 to February 2018, 16 consecutive patients (66 ± 12 years; 38% female) presented with acute type A aortic dissections and underwent emergent surgical aortic repair with AMDS implantation. All patients presented with DeBakey I aortic dissection, with evidence of malperfusion in 50% (n = 8) of patients. All cases were performed under hypothermic circulatory arrest with an additional average duration for AMDS implantation time of 2.1 minutes.Results
All 16 device implantations were successful. Overall 30-day mortality was 6.3% (n = 1) and stroke occurred in 6.3% (n = 1) of cases. There was no incidence of device-related aortic injury or aortic arch branch vessel occlusion. During the follow-up period, 12 patients had completed at least 1 postoperative computed tomography scan. At initial follow-up computed tomography scan, complete or partial thrombosis, and remodeling of the aortic arch occurred in 91.7% of cases (n = 11/12) and in the proximal descending thoracic aorta, complete or partial thrombosis, and remodeling occurred in 91.7% (n = 11/12).Conclusions
Preliminary results suggest that the AMDS is a safe, feasible and reproducible adjunct to current surgical approaches for acute DeBakey I aortic dissection repair. Further, the AMDS manages malperfusion and promotes early positive remodeling in the aortic arch and distal dissected segments, with favorable FL closure rates at follow-up. Ongoing follow-up will provide additional insight into the long-term effects of the AMDS. 相似文献3.
AimThis integrative review aimed to develop an understanding of the experiences and perceptions of newly qualified nurses in the United Kingdom (UK).BackgroundIn the transitional period following registration, newly qualified nurses may feel socially isolated and overwhelmed by increases in accountability, workplace pressures and the psychological demands of the role. Despite this, the experiences and perceptions of newly qualified nurses remains an under-researched area in the UK, with much of the existing research having been conducted internationally.MethodAn integrative framework methodology was used as a basis for the literature review. The methodology comprised of five stages: problem identification, literature search, data evaluation, data analysis and presentation of the findings. 20 papers were assessed for quality and analysed thematically.ResultsData were synthesised under four themes: Preparation for real-world practice, the transition experience, growing into the role and preceptorship and support from the wider team.ConclusionThe review suggests that newly qualified nurses require on-going support post qualification. Workplace culture appears to have a significant impact on the transition experience. The review provides further evidence in relation to the experiences of newly qualified nurses in the UK context. The review may help to inform the development of strategies to support and retain newly qualified nurses in an ever-changing health care environment. 相似文献
4.
《Clinical colorectal cancer》2022,21(2):80-88
Lateral lymph nodes in low, locally advanced, rectal cancer have proven implications for local recurrence rates, which increase drastically in the presence of persistently enlarged lateral lymph nodes. These clinical implications warrant a thorough understanding of lateral nodal disease with awareness and knowledge from all three specialties involved – radiology, radiation oncology, and surgery – to ensure proper treatment. Relevant literature for each specialty, including all current guidelines and perspectives, were examined. Variations in definitions and treatment paradigms were evaluated. There is still no consensus for the standardized treatment of lateral nodal disease. Each discipline works according to their own available evidence, but relevant data are scarce. Current international guidelines and standard recommendations for the diagnostics and treatment of lateral lymph nodes are lacking. This results in differing perspectives and interpretations between the disciplines which can lead to challenging communication in an area where multidisciplinary collaboration is essential. This review addresses this by presenting the current evidence, perspectives and practices of each specialty and makes suggestions for each phase of the diagnostic and treatment process for patients with lateral nodal disease. By doing this, steps are taken toward achieving international consensus, and multidisciplinary collaboration. 相似文献
5.
6.
7.
8.
The COVID-19 outbreak in Winter (2020) has caused widespread disruption for health sciences students undergoing clinical placements—vital periods of experiential learning that cannot be substituted with distance alternatives. For students placed in rural areas, already coping with isolation, precarious supply chains and shortages of essential personnel, the effects of the COVID-19 outbreak may have far-reaching implications for psychosocial wellness, self-efficacy and clinical judgment. Four nursing and eight medical students (n = 12) supplied photographs and commentary documenting the experience of withdrawing suddenly from clinical sites in rural Alberta. Collaborative, thematic analysis revealed continuities between pre- and post-outbreak life, both for the students and their rural hosts. Social determinants of health such as seclusion, environmental hazards, and health-seeking behaviors carried over and compounded the effects of the outbreak on the placement communities and clinical sites. Other continuities included the reliance on technology for clinical and social connectivity, and capitalizing on natural settings to cope with isolation and confinement. Prolonged liminality, lack of closure, and the loss of team identity were the greatest stressors brought on by the suspension of clinical activities. However, the participants felt well equipped to deal with these circumstances through the resilience, adaptability, and community ethos acquired during their placements. 相似文献
9.
Healthcare practice supports the achievement of programme learning outcomes for nursing students internationally. Within this context the issue of reluctance to fail nursing students, when warranted, is extensively examined within the literature with few definitive solutions emerging. Little is known about the perceived barriers that exacerbate this reluctance, or about factors that might enable and support nurses to fail students. To address this issue our study employed a non-experimental cohort study of nurses (n = 365) from two large teaching hospitals in the Republic of Ireland (ROI). Preceptors in this study clearly enjoyed their role with students, and received positive feedback from students. However, findings suggest that preceptors require more support from colleagues in providing comprehensive evidence in assessment. They also require additional training for providing negative feedback to students. A collaborative approach to competence assessment is recommended, whereby the professional burden can be borne by the team, and where students can engage in a holistic, reflective, learning experience that will ultimately improve their competence. 相似文献