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   23462篇
  免费   5479篇
  国内免费   93篇
耳鼻咽喉   121篇
儿科学   583篇
妇产科学   1737篇
基础医学   794篇
口腔科学   243篇
临床医学   15779篇
内科学   2955篇
皮肤病学   184篇
神经病学   1213篇
特种医学   295篇
外科学   1508篇
综合类   77篇
一般理论   2篇
预防医学   2111篇
眼科学   55篇
药学   372篇
中国医学   8篇
肿瘤学   997篇
  2024年   81篇
  2023年   843篇
  2022年   205篇
  2021年   376篇
  2020年   728篇
  2019年   358篇
  2018年   1244篇
  2017年   1473篇
  2016年   1554篇
  2015年   1631篇
  2014年   1688篇
  2013年   2025篇
  2012年   800篇
  2011年   1047篇
  2010年   1220篇
  2009年   1505篇
  2008年   967篇
  2007年   846篇
  2006年   808篇
  2005年   703篇
  2004年   640篇
  2003年   566篇
  2002年   501篇
  2001年   505篇
  2000年   295篇
  1999年   460篇
  1998年   620篇
  1997年   722篇
  1996年   651篇
  1995年   582篇
  1994年   437篇
  1993年   350篇
  1992年   266篇
  1991年   257篇
  1990年   254篇
  1989年   197篇
  1988年   152篇
  1987年   138篇
  1986年   138篇
  1985年   151篇
  1984年   119篇
  1983年   108篇
  1982年   96篇
  1981年   97篇
  1980年   67篇
  1979年   87篇
  1978年   72篇
  1977年   68篇
  1976年   72篇
  1972年   86篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
61.
Clinical practice guidelines have emerged as a reality for medical practitioners over the past 20 years. Although virtually all groups interested in the development of practice guidelines hope for improvements in patient care, secondary expectations vary widely among those using them. Their use in daily practice by physicians has met with resistance from barriers including concerns of “cookbook” medicine, a loss of autonomy, and increased professional liability. The recent experience of the ACR in addressing these challenges illustrates that physicians are receptive to steps perceived to mitigate the risks accompanying the use of guidelines as well as to efforts to increase their understanding of implementing guidelines in clinical practice. The experiences of other medical societies and an inventory of future trends reveal additional challenges associated with the use of practice guidelines, as third parties look to guidelines as points of reference for gauging the performance of health care providers.  相似文献   
62.
Background: Elder patients with acute coronary syndromes (ACS) are less likely to receive cardiac catheterization. The reasons for this are unclear.
Objectives: To assess whether elder patients who had a documented history of dementia, lived in extended care facilities, or had do not intubate–do not resuscitate (DNR-DNI) advance directives were less likely to receive cardiac catheterization, despite having ACS with high-risk features.
Methods: This was a medical record review conducted at an urban teaching hospital. DNR-DNI status before hospitalization, extended care facility (nursing home or assisted living) residence, and a previous diagnosis of dementia were obtained from the medical record. Patients 65 years and older who presented to the emergency department with acute myocardial infarction or with unstable angina with ST segment deviation were included. Univariate and multivariate logistic regression were performed, and odds ratios (ORs) were reported with their 95% confidence intervals (CIs).
Results: Of the 201 eligible patients, 66 (32.8%) patients did not undergo cardiac catheterization. In the univariate analysis, patients who had dementia, resided in extended care facilities, or were DNR-DNI were less likely to receive cardiac catheterization. Only extended care facility residence (OR, 0.18; 95% CI = 0.04 to 0.83) and DNR-DNI status (OR, 0.19; 95% CI = 0.04 to 0.92) remained significantly associated with decreased cardiac catheterization in the multivariate analysis.
Conclusions: Elder patients with ACS residing in extended care facilities or who are DNR-DNI are less likely to receive cardiac catheterization. Future studies concerning the quality of ACS care for elders should take these variables into account.  相似文献   
63.
64.
TOPIC: Psychological impact of adoption and resulting core issues for adopted children. PURPOSE: To raise awareness of the psychological impact of adoption. SOURCES: Published literature and personal observations. CONCLUSIONS: Adoption raises unique issues and challenges for the child and adoptive parents. Resolving the issues of adoption is a lifelong process. Through an awareness of the issues inherent in adoption, nurses and parents can use strategies that will enhance children's self-esteem and decrease their emotional vulnerability. Search terms: Adoption, intervention, loss, self-esteem, strategies  相似文献   
65.
A documentation system that facilitates accurate and complete recording is needed by every obstetric/neonatal nursing service. Developing an individualized system is a major undertaking. However, specific steps can be taken to ease the process. These steps are described, beginning with the assessment phase and concluding with evaluation.  相似文献   
66.
67.
68.
69.
70.
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