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   46801篇
  免费   3367篇
  国内免费   168篇
耳鼻咽喉   707篇
儿科学   1087篇
妇产科学   703篇
基础医学   5721篇
口腔科学   766篇
临床医学   5258篇
内科学   9019篇
皮肤病学   616篇
神经病学   4147篇
特种医学   1866篇
外国民族医学   2篇
外科学   8121篇
综合类   764篇
现状与发展   1篇
一般理论   32篇
预防医学   3719篇
眼科学   998篇
药学   3512篇
  1篇
中国医学   76篇
肿瘤学   3220篇
  2023年   323篇
  2022年   468篇
  2021年   1227篇
  2020年   647篇
  2019年   1199篇
  2018年   1420篇
  2017年   1027篇
  2016年   1047篇
  2015年   1272篇
  2014年   1871篇
  2013年   2380篇
  2012年   3609篇
  2011年   3852篇
  2010年   2116篇
  2009年   1795篇
  2008年   3105篇
  2007年   3422篇
  2006年   3240篇
  2005年   3099篇
  2004年   2709篇
  2003年   2703篇
  2002年   2400篇
  2001年   350篇
  2000年   225篇
  1999年   349篇
  1998年   500篇
  1997年   344篇
  1996年   302篇
  1995年   296篇
  1994年   253篇
  1993年   210篇
  1992年   157篇
  1991年   137篇
  1990年   142篇
  1989年   157篇
  1988年   143篇
  1987年   125篇
  1986年   111篇
  1985年   135篇
  1984年   151篇
  1983年   132篇
  1982年   166篇
  1981年   138篇
  1980年   158篇
  1979年   76篇
  1978年   92篇
  1977年   63篇
  1976年   56篇
  1975年   53篇
  1974年   40篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
PurposeTo examine what proportion of caregivers, if given a choice, would choose medical versus surgical treatment of appendicitis and what factors would be important in their decision.MethodsA survey was devised and given to the caregivers of children presenting to the pediatrician for a routine visit in community and academic pediatric clinics. The survey presented a summary of outcomes after medical (non-operative) and surgical treatment of uncomplicated appendicitis. Participants were then asked to choose medical versus surgical treatment if their child were to develop appendicitis. They were also asked to rate the importance of certain factors in their decision ? 1 being “not important” and 5 being “very important”.ResultsFour hundred surveys were distributed with an 86.2% (345/400) response rate. Six percent (21/342) of respondents reported a history of appendicitis and 49.4% (168/340) reported having known someone who had appendicitis. The majority of respondents, 85.3% (284/333), were mothers. A minority of respondents, 41.7% (95% CI: 36.7, 47.0), chose medical treatment over surgery for appendicitis. There was no statistical difference in the proportion of mothers (41.6%) versus fathers who chose medical treatment (41.3%). Caregivers who chose medical treatment were more likely to rate time in hospital (p = .008) and time out of school (p = 05) as important in decision making when compared with those who chose surgery. Those who chose surgical treatment were more likely to rate risk of recurrent appendicitis (p < .001) as important to decision making. In the multivariate analysis, those who rated time in hospital as very important had more than twice the odds of choosing medical therapy (OR 2.20, p = 0.02) when compared with those who rated it as less important. Not knowing someone who has had appendicitis was significantly associated with choosing medical therapy when compared with those who do know someone who has had appendicitis, OR 2.3, p = .002. Rating pain as very important was also significantly associated with choosing medical therapy, when compared to those rating pain 1–3, OR 3.38, p = .03.ConclusionsIn this survey of caregivers of children presenting for routine care, 41.7% would choose medical, or non-operative, therapy for their children with acute appendicitis. The risk of recurrence, time in hospital, and time out of school, pain, and knowing someone who has had appendicitis were all important factors that families may consider when making a decision. These data may be useful for surgeons counseling patients on which treatment to pursue.  相似文献   
4.
Brian C. Werner 《Arthroscopy》2019,35(4):1072-1073
Achieving tendon-bone healing continues to be challenging after arthroscopic rotator cuff repair, particularly for larger tears, despite significant improvements in repair techniques and implants. Considerable effort has been invested in research to identify methods to improve healing, including patches and injectable biologics. Parathyroid hormone improves tendon-to-bone healing. Teriparatide is osteogenic, stimulating bone growth, and chondrogenic, promoting cartilage formation at the enthesis. However, it could be difficult to justify the expense and potential risk of systemic administration of a recombinant hormone to improve structural healing until improvement in clinical outcomes can be shown.  相似文献   
5.
Brian Barlow 《Arthroscopy》2019,35(5):1441-1444
Arthroscopic iliopsoas fractional lengthening requires careful patient selection, specifically reproducible symptoms, confirmatory physical examination, suggestive imaging findings, and evaluation for microinstability. Resolution of hip snapping is expected in about 80% of cases, but there is a possibility of weakness and pain, presumably from microinstability from the loss of a dynamic anterior hip stabilizer.  相似文献   
6.
The Impella 5.0, a percutaneously inserted left ventricular assist device, has been used to support patients who have severe heart failure or who are undergoing high-risk percutaneous coronary intervention. We report our surgical placement of the Impella 5.0, through a graft sewn to the aorta, to unload the left ventricle of a 59-year-old man who was undergoing venoarterial extracorporeal membrane oxygenation for postcardiotomy shock. The patient underwent successful placement of a long-term left ventricular assist device before his discharge from the hospital. The versatility of the Impella 5.0 is exemplified in this patient who was successfully bridged to long-term support.  相似文献   
7.
8.
9.
10.
Introduction: Surgery in patients with head and neck cancers is frequently complicated by multiple stages of procedure that includes significant surgical removal of all or part of an organ with cancer, tissue reconstruction, and extensive neck dissection. Postoperative wound infections, termed ‘surgical site infections’ (SSIs) are a significant impediment to head-and-neck cancer surgery and recovery, and need to be addressed.

Areas covered: Approximately 10–45% of patients undergoing head-and-neck cancers surgery develop SSIs. SSIs can lead to delayed wound healing, increased morbidity and mortality as well as costs. Consequently, SSIs need to be avoided where possible, as even the surgery itself impacts on patients’ subsequent activities and their quality of life, which is exacerbated by SSIs. Several risk factors for SSIs need to be considered to reduce future rates, and care is also needed in the selection and duration of antibiotic prophylaxis.

Expert commentary: Head and neck surgeons should give personalized care especially to patients at high risk of SSIs. Such patients include those who have had chemoradiotherapy and need reconstructive surgery, and patients from lower and middle-income countries and from poorer communities in high income countries, who often have high levels of co-morbidity because of resource constraints.  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