首页 | 官方网站   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   1582019篇
  免费   105532篇
  国内免费   4923篇
医药卫生   1692474篇
  2018年   18285篇
  2017年   15300篇
  2016年   16372篇
  2015年   19904篇
  2014年   24355篇
  2013年   33012篇
  2012年   50191篇
  2011年   48345篇
  2010年   28353篇
  2009年   27567篇
  2008年   44238篇
  2007年   48115篇
  2006年   48850篇
  2005年   55223篇
  2004年   54504篇
  2003年   49437篇
  2002年   44345篇
  2001年   65810篇
  2000年   65540篇
  1999年   58724篇
  1998年   16153篇
  1997年   14326篇
  1996年   14367篇
  1995年   13506篇
  1994年   12817篇
  1992年   47717篇
  1991年   47193篇
  1990年   46869篇
  1989年   45312篇
  1988年   42112篇
  1987年   41247篇
  1986年   39268篇
  1985年   37248篇
  1984年   27474篇
  1983年   23652篇
  1982年   13612篇
  1981年   11958篇
  1979年   26468篇
  1978年   18363篇
  1977年   15690篇
  1976年   14639篇
  1975年   16787篇
  1974年   19841篇
  1973年   18912篇
  1972年   18165篇
  1971年   16993篇
  1970年   15838篇
  1969年   15259篇
  1968年   14307篇
  1967年   12716篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
72.
73.

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   
74.
75.
76.
77.
78.
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   
79.
80.
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-23

京公网安备 11010802026262号