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   169576篇
  免费   12027篇
  国内免费   383篇
耳鼻咽喉   2351篇
儿科学   5142篇
妇产科学   4742篇
基础医学   20801篇
口腔科学   5043篇
临床医学   24288篇
内科学   39396篇
皮肤病学   4897篇
神经病学   12677篇
特种医学   3691篇
外国民族医学   1篇
外科学   19964篇
综合类   820篇
一般理论   46篇
预防医学   16116篇
眼科学   3635篇
药学   10247篇
中国医学   733篇
肿瘤学   7396篇
  2023年   1679篇
  2022年   774篇
  2021年   3383篇
  2020年   2129篇
  2019年   3688篇
  2018年   6902篇
  2017年   4773篇
  2016年   4556篇
  2015年   4872篇
  2014年   5452篇
  2013年   7908篇
  2012年   11218篇
  2011年   12271篇
  2010年   6822篇
  2009年   5313篇
  2008年   9879篇
  2007年   10383篇
  2006年   9677篇
  2005年   9521篇
  2004年   8574篇
  2003年   8058篇
  2002年   7551篇
  2001年   5238篇
  2000年   5899篇
  1999年   4381篇
  1998年   1273篇
  1997年   1143篇
  1996年   1095篇
  1995年   945篇
  1994年   686篇
  1993年   593篇
  1992年   1665篇
  1991年   1404篇
  1990年   1285篇
  1989年   1053篇
  1988年   882篇
  1987年   818篇
  1986年   806篇
  1985年   734篇
  1984年   556篇
  1983年   445篇
  1979年   428篇
  1976年   292篇
  1975年   326篇
  1974年   358篇
  1973年   396篇
  1972年   378篇
  1971年   325篇
  1970年   307篇
  1969年   308篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
Journal of Immigrant and Minority Health - COVID-19 has disproportionally affected underrepresented minorities (URM) and low-income immigrants in the United States. The aim of the study is to...  相似文献   
3.
Patient navigation is a strategy for overcoming barriers to reduce disparities and to improve access and outcomes. The aim of this umbrella review was to identify, critically appraise, synthesize, and present the best available evidence to inform policy and planning regarding patient navigation across the cancer continuum. Systematic reviews examining navigation in cancer care were identified in the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, Cumulative Index of Nursing and Allied Health (CINAHL), Epistemonikos, and Prospective Register of Systematic Reviews (PROSPERO) databases and in the gray literature from January 1, 2012, to April 19, 2022. Data were screened, extracted, and appraised independently by two authors. The JBI Critical Appraisal Checklist for Systematic Review and Research Syntheses was used for quality appraisal. Emerging literature up to May 25, 2022, was also explored to capture primary research published beyond the coverage of included systematic reviews. Of the 2062 unique records identified, 61 systematic reviews were included. Fifty-four reviews were quantitative or mixed-methods reviews, reporting on the effectiveness of cancer patient navigation, including 12 reviews reporting costs or cost-effectiveness outcomes. Seven qualitative reviews explored navigation needs, barriers, and experiences. In addition, 53 primary studies published since 2021 were included. Patient navigation is effective in improving participation in cancer screening and reducing the time from screening to diagnosis and from diagnosis to treatment initiation. Emerging evidence suggests that patient navigation improves quality of life and patient satisfaction with care in the survivorship phase and reduces hospital readmission in the active treatment and survivorship care phases. Palliative care data were extremely limited. Economic evaluations from the United States suggest the potential cost-effectiveness of navigation in screening programs.  相似文献   
4.
5.
6.
7.
8.
9.
10.

Background and objectives

A prompt and effective management of trauma patient is necessary. The aim of this case report is to highlight the importance of intraoperative echocardiography as a useful tool in patients suffering from refractory hemodynamic instability no otherwise explained.

Case report

A 41 year‐old woman suffered a car accident. At the emergency department, no abnormalities were found in ECG or chest X‐ray. Abdominal ultrasound revealed the presence of abdominal free liquid and the patient was submitted to urgent exploratory laparotomy. Nevertheless, she persisted suffering arterial hypotension and metabolic acidosis. Looking for the reason of her hemodynamic instability, intraoperative transthoracic echocardiography was performed, finding out the presence of pericardial effusion. Once the cardiac surgeon extracted pericardial clots, patient's situation improved clinically and analytically.

Conclusion

Every anesthesiologist should be able to use the intraoperative echocardiography as an effective tool in order to establish the appropriate measures to promote the survival of patients suffering severe trauma.  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