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   1975154篇
  免费   143126篇
  国内免费   3988篇
耳鼻咽喉   28510篇
儿科学   64893篇
妇产科学   57570篇
基础医学   286000篇
口腔科学   55564篇
临床医学   168034篇
内科学   388501篇
皮肤病学   41710篇
神经病学   155066篇
特种医学   77972篇
外国民族医学   672篇
外科学   307767篇
综合类   42243篇
现状与发展   1篇
一般理论   532篇
预防医学   145620篇
眼科学   45708篇
药学   147372篇
  1篇
中国医学   3887篇
肿瘤学   104645篇
  2018年   18925篇
  2016年   16113篇
  2015年   18452篇
  2014年   25996篇
  2013年   39739篇
  2012年   53922篇
  2011年   57773篇
  2010年   34584篇
  2009年   32671篇
  2008年   55602篇
  2007年   59794篇
  2006年   60690篇
  2005年   59452篇
  2004年   57100篇
  2003年   55422篇
  2002年   54546篇
  2001年   88123篇
  2000年   90553篇
  1999年   77360篇
  1998年   21930篇
  1997年   19821篇
  1996年   19951篇
  1995年   18726篇
  1994年   17818篇
  1993年   16648篇
  1992年   61879篇
  1991年   60484篇
  1990年   59467篇
  1989年   57546篇
  1988年   53738篇
  1987年   52711篇
  1986年   50437篇
  1985年   48159篇
  1984年   36083篇
  1983年   31104篇
  1982年   18681篇
  1981年   16431篇
  1979年   34061篇
  1978年   23953篇
  1977年   20527篇
  1976年   19433篇
  1975年   21368篇
  1974年   25273篇
  1973年   24306篇
  1972年   23131篇
  1971年   21519篇
  1970年   20253篇
  1969年   19219篇
  1968年   18235篇
  1967年   16295篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.

Background

Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.

Methods

During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.

Results

No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.

Conclusions

The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach.  相似文献   
104.
105.
106.
107.
108.
BackgroundThe aim of this paper is to assess the current state of quality and outcomes measures being reported for hepatic resections in the recent literature.MethodsMedline and PubMed databases were searched for English language articles published between 1 January 2002 and 30 April 2013. Two examiners reviewed each article and relevant citations for appropriateness of inclusion, which excluded papers of liver donor hepatic resections, repeat hepatectomies or meta-analyses. Data were extracted and summarized by two examiners for analysis.ResultsFifty-five studies were identified with suitable reporting to assess peri-operative mortality in hepatic resections. In only 35% (19/55) of the studies was the follow-up time explicitly stated, and in 47% (26/55) of studies peri-operative mortality was limited to in-hospital or 30 days. The time period in which complications were captured was not explicitly stated in 19 out of 28 studies. The remaining studies only captured complications within 30 days of the index operation (8/28). There was a paucity of quality literature addressing truly patient-centred outcomes.ConclusionQuality outcomes after a hepatic resection are inconsistently reported in the literature. Quality outcome studies for a hepatectomy should report mortality and morbidity at a minimum of 90 days after surgery.  相似文献   
109.
110.
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