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   2738983篇
  免费   217105篇
  国内免费   9599篇
耳鼻咽喉   38575篇
儿科学   89953篇
妇产科学   74716篇
基础医学   366522篇
口腔科学   74492篇
临床医学   269836篇
内科学   556929篇
皮肤病学   69308篇
神经病学   227221篇
特种医学   105696篇
外国民族医学   736篇
外科学   422169篇
综合类   50613篇
现状与发展   83篇
一般理论   968篇
预防医学   208734篇
眼科学   60450篇
药学   188943篇
  8篇
中国医学   5339篇
肿瘤学   154396篇
  2021年   22682篇
  2019年   22492篇
  2018年   37016篇
  2017年   30669篇
  2016年   35074篇
  2015年   38442篇
  2014年   55859篇
  2013年   77329篇
  2012年   85461篇
  2011年   89830篇
  2010年   61086篇
  2009年   63013篇
  2008年   84593篇
  2007年   87844篇
  2006年   91832篇
  2005年   85419篇
  2004年   81685篇
  2003年   78061篇
  2002年   75399篇
  2001年   132179篇
  2000年   134182篇
  1999年   113747篇
  1998年   34968篇
  1997年   31401篇
  1996年   31642篇
  1995年   30509篇
  1994年   27089篇
  1993年   25051篇
  1992年   86555篇
  1991年   82975篇
  1990年   79898篇
  1989年   77241篇
  1988年   70515篇
  1987年   68859篇
  1986年   64410篇
  1985年   61186篇
  1984年   45479篇
  1983年   38478篇
  1982年   22941篇
  1981年   20384篇
  1979年   39234篇
  1978年   27746篇
  1977年   23619篇
  1976年   21728篇
  1975年   23060篇
  1974年   27000篇
  1973年   25582篇
  1972年   24023篇
  1971年   22144篇
  1970年   20411篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between.  相似文献   
3.

Objectives

Expedient extubation after cardiac surgery has been associated with improved outcomes, leading to postoperative extubation frequently during overnight hours. However, recent evidence in a mixed medical-surgical intensive care unit population demonstrated worse outcomes with overnight extubation. This study investigated the impact of overnight extubation in a statewide, multicenter Society of Thoracic Surgeons database.

Methods

Records from 39,812 patients undergoing coronary artery bypass grafting or valve operations (2008-2016) and extubated within 24 hours were stratified according to extubation time between 06:00 and 18:00 (day) or between 18:00 and 6:00 (overnight). Outcomes including reintubation, mortality, and composite morbidity-mortality were evaluated using hierarchical regression models adjusted for Society of Thoracic Surgeons predictive risk scores. To further analyze extubation during the night, a subanalysis stratified patients into 3 groups: 06:00 to 18:00, 18:00 to 24:00, and 24:00 to 06:00.

Results

A total of 20,758 patients were extubated overnight (52.1%) and were slightly older (median age 66 vs 65 years, P < .001) with a longer duration of ventilation (4 vs 7 hours, P < .001). Day and overnight extubation were associated with equivalent operative mortality (1.7% vs 1.7%, P = .880), reintubation (3.7% vs 3.4%, P = .141), and composite morbidity-mortality (8.2% vs 8.0%, P = .314). After risk adjustment, overnight extubation was not associated with any difference in reintubation, mortality, or composite morbidity-mortality. On subanalysis, those extubated between 24:00 and 06:00 exhibited increased composite morbidity-mortality (odds ratio, 1.18; P = .001) but no difference in reintubation or mortality.

Conclusions

Extubation overnight was not associated with increased mortality or reintubation. These results suggest that in the appropriate clinical setting, it is safe to routinely extubate cardiac surgery patients overnight.  相似文献   
4.
5.
6.
7.
8.
9.
10.
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