首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2177篇
  免费   85篇
  国内免费   6篇
耳鼻咽喉   1051篇
儿科学   21篇
妇产科学   30篇
基础医学   42篇
口腔科学   23篇
临床医学   417篇
内科学   103篇
皮肤病学   14篇
神经病学   55篇
特种医学   27篇
外科学   91篇
综合类   108篇
预防医学   134篇
眼科学   1篇
药学   55篇
  1篇
中国医学   65篇
肿瘤学   30篇
  2024年   4篇
  2023年   35篇
  2022年   74篇
  2021年   57篇
  2020年   47篇
  2019年   66篇
  2018年   57篇
  2017年   44篇
  2016年   44篇
  2015年   58篇
  2014年   108篇
  2013年   207篇
  2012年   430篇
  2011年   423篇
  2010年   292篇
  2009年   64篇
  2008年   50篇
  2007年   43篇
  2006年   41篇
  2005年   33篇
  2004年   19篇
  2003年   25篇
  2002年   16篇
  2001年   19篇
  2000年   5篇
  1999年   3篇
  1998年   3篇
  1997年   1篇
排序方式: 共有2268条查询结果,搜索用时 15 毫秒
31.
32.
Health care professionals need to approach their profession with a view to life long learning. They need to develop a strategy to meet their learning needs in a reflective and effective manner. Continuous medical educational (CME) is the traditional tool for learning and updating knowledge. Most of them are in the forms of courses, conferences, journal clubs and workshops. They are mostly didactic sessions and evidence suggests that they are not effective to improve the clinical skills and attitude. Systematic review of teaching evidence-based medicine shows that interactive and clinically integrated learning is the most effective form of learning. It enhances knowledge and skills. Professionals should view CME in a holistic manner in the context of continuous professional development (CPD) and even in the wider concept of knowledge translation, which encompasses both CME and CPD. e Learning is one of the most important forms of non-traditional CME. It provides an efficient and increasingly interactive delivery system that can handle complex and layered information. More work needs to be done to see its effectiveness for practising clinicians.  相似文献   
33.
The aim of the present review is to summarize the current knowledge regarding pharmacological prevention and treatment of acute pancreatitis (AP) based on experimental animal models and clinical trials. Somatostatin (SS) and octreotide inhibit the exocrine production of pancreatic enzymes and may be useful as prophylaxis against Post Endoscopic retrograde cholangiopancreatography Pancreatitis (PEP). The protease inhibitor Gabexate mesilate (GM) is used routinely as treatment to AP in some countries, but randomized clinical trials and a meta-analysis do not support this practice. Nitroglycerin (NGL) is a nitrogen oxide (NO) donor, which relaxes the sphincter of Oddi. Studies show conflicting results when applied prior to ERCP and a large multicenter randomized study is warranted. Steroids administered as prophylaxis against PEP has been validated without effect in several randomized trials. The non-steroidal anti-inflammatory drugs (NSAID) indomethacin and diclofenac have in randomized studies showed potential as prophylaxis against PEP. Interleukin 10 (IL-10) is a cytokine with anti-inflammatory properties but two trials testing IL-10 as prophylaxis to PEP have returned conflicting results. Antibodies against tumor necrosis factor-alpha (TNF-α) have a potential as rescue therapy but no clinical trials are currently being conducted. The antibiotics beta- lactams and quinolones reduce mortality when necrosis is present in pancreas and may also reduce incidence of infected necrosis. Evidence based pharmacological treatment of AP is limited and studies on the effect of potent anti-inflammatory drugs are warranted.  相似文献   
34.
35.

Objectives

To systematically locate, critically appraise, and synthesize the available evidence regarding the effectiveness of cognitive behavioral therapies (CBTs) and psychoeducation that can be implemented by rehabilitation specialists to treat fear-avoidance beliefs in patients with acute, subacute, and chronic low back pain (LBP).

Data Sources

Electronic databases (CINAHL, PubMed, Psychology and Behavior Sciences Collection, SPORTDiscus, PsycINFO) were searched from inception to September 2017.

Study Selection

Assessment of methodological quality was completed using the Physiotherapy Evidence Database (PEDro) scale. The Strength of Recommendation Taxonomy was used to evaluate the quality of evidence.

Data Extraction

Study sample, subject demographics, CBT and/or psychoeducation intervention details, data collection time points, outcome assessments, statistical analysis, results, and conclusions were extracted from each study. In addition, effect sizes were calculated.

Data Synthesis

Five high-quality studies (PEDro ≥6) were included. All included studies evaluated fear-avoidance beliefs. CBTs and psychoeducation strategies designed to target patient-specific fears demonstrated clinically meaningful results, while psychoeducation methodologies were not as effective.

Conclusions

There is inconsistent, patient-oriented evidence (grade B) to support the use of CBTs and/or psychoeducation strategies by rehabilitation specialists to treat fear-avoidance beliefs. Patient-centered and personalized CBTs were most effective to treat these psychosocial factors in patients with LBP when compared with a control treatment.  相似文献   
36.

Objectives

To provide an evidence-based overview of the effectiveness of conservative and (post)surgical interventions for trigger finger, Dupuytren disease, and De Quervain disease.

Data Sources

Cochrane Library, Physiotherapy Evidence Database, PubMed, Embase, and CINAHL were searched to identify relevant systematic reviews and randomized controlled trials (RCTs).

Data Selection

Two reviewers independently applied the inclusion criteria to select potential studies.

Data Extraction

Two reviewers independently extracted the data and assessed the methodologic quality.

Data Synthesis

A best-evidence synthesis was performed to summarize the results. Two reviews (trigger finger and De Quervain disease) and 37 randomized controlled trials (RCTs) (trigger finger: n=8; Dupuytren disease: n=14, and De Quervain disease: n=15) were included. The trials reported on oral medication (Dupuytren disease), physiotherapy (De Quervain disease), injections and surgical treatment (trigger finger, Dupuytren disease, and De Quervain disease), and other conservative (De Qervain disease) and postsurgical treatment (Dupuytren disease). Moderate evidence was found for the effect of corticosteroid injection on the very short term for trigger finger, De Quervain disease, and for injections with collagenase (30d) when looking at all joints, and no evidence was found when looking at the PIP joint for Dupuytren disease. A thumb splint as additive to a corticosteroid injection seems to be effective (moderate evidence) for De Quervain disease (short term and midterm). For Dupuytren disease, use of a corticosteroid injection within a percutaneous needle aponeurotomy in the midterm and tamoxifen versus a placebo before or after a fasciectomy seems to promising (moderate evidence). We also found moderate evidence for splinting after Dupuytren surgery in the short term.

Conclusions

In recent years, more and more RCTs have been conducted to study treatment of the aforementioned hand disorders. However, more high-quality RCTs are still needed to further stimulate evidence-based practice for patients with trigger finger, Dupuytren disease, and De Quervain disease.  相似文献   
37.
38.
39.
目的:总结老年人慢性疼痛管理的相关证据,为临床老年人疼痛管理的相关实践提供参考。方法:针对老年人慢性疼痛的问题,运用循证护理方法检索国内外数据库相关文献,检索时限为建库至2020年6月2日。由2名研究者采用JBI循证卫生保健中心的文献质量评价标准和证据推荐系统,对各类研究进行质量评价及证据推荐级别评定,纳入符合质量标准的文献,并提取证据。结果:共纳入文献20篇,包括指南8篇、系统评价3篇、专家共识3篇、最佳实践1篇、立场声明1篇、证据总结4篇。最终形成包括疼痛管理一般原则、疼痛评估、干预策略、自我管理、教育和培训5个方面的20条最佳证据。结论:本研究汇总了目前老年人慢性疼痛的文献,为临床老年人的慢性疼痛管理提供循证依据,临床人员应依据最佳临床证据并依据医院实际医疗情况进行证据的运用,以提高护理质量。  相似文献   
40.
目的介绍并推广中国儿童与老年健康证据转化平台(Chinese Clearinghouse for Evidence Translation in Child & Aging Health,CCET)。方法分别成立儿童、老年健康顾问委员会,利用科学的评价量表评价筛选国内外相关的儿童、老年健康促进项目并由研究团队翻译转化。与兰州博阳软件工程有限公司合作,根据网站需呈现的内容与目标功能,共同规划设计网站框架与界面,初步建立站点。将转化的健康证据及其他信息资源(疾病基本情况、项目评价量表、研究报告标准等)上传使之在网站相应栏目中呈现,建立CCET网站,并通过微信和微博媒介定期传播儿童及老年健康最新进展、循证研究最新方法。结果CCET主要由儿童健康、老年健康、评价量表、报告标准、推广应用和老年抑郁症循证防治数据库6个版块组成。CCET儿童与老年健康促进项目由国内外专家采用科学的评价量表筛选和评价,转化的证据科学性强,目前已有相关研究机构和社区有意向参与CCET研究和应用转化项目。结论CCET致力于循证方法培训,建立国内健康干预项目的科学性和适用性评价系统,对国外证据转换后的后续干预项目培训,提升服务机构能力,以及综合干预课程研发。CCET信息全面、界面简单、用户友好,为促进我国儿童与老年健康提供证据支持。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号