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   12825篇
  免费   653篇
  国内免费   112篇
耳鼻咽喉   315篇
儿科学   639篇
妇产科学   544篇
基础医学   940篇
口腔科学   460篇
临床医学   1023篇
内科学   3242篇
皮肤病学   202篇
神经病学   761篇
特种医学   546篇
外科学   3050篇
综合类   177篇
一般理论   1篇
预防医学   297篇
眼科学   448篇
药学   468篇
中国医学   23篇
肿瘤学   454篇
  2024年   10篇
  2023年   104篇
  2022年   170篇
  2021年   396篇
  2020年   248篇
  2019年   309篇
  2018年   387篇
  2017年   311篇
  2016年   527篇
  2015年   607篇
  2014年   669篇
  2013年   803篇
  2012年   1043篇
  2011年   935篇
  2010年   582篇
  2009年   497篇
  2008年   857篇
  2007年   1010篇
  2006年   918篇
  2005年   907篇
  2004年   803篇
  2003年   592篇
  2002年   532篇
  2001年   67篇
  2000年   35篇
  1999年   49篇
  1998年   57篇
  1997年   41篇
  1996年   31篇
  1995年   24篇
  1994年   15篇
  1993年   7篇
  1992年   8篇
  1991年   10篇
  1990年   9篇
  1989年   6篇
  1988年   2篇
  1986年   2篇
  1985年   3篇
  1984年   1篇
  1979年   2篇
  1978年   1篇
  1975年   1篇
  1973年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
Therapeutic hypothermia has been shown to improve neurological outcomes in patients who remain comatose following resuscitation from cardiac arrest. While there are numerous reports of patients who have had a successful course after induction of therapeutic hypothermia, such therapeutic intervention has not been described in patients with congenital long QT syndrome (LQTS). We report outcomes in two patients with LQTS who had therapeutic hypothermia following a ventricular fibrillation arrest. Careful and routine monitoring of the QT interval in this patient population is necessary due to the potential for worsening electrical instability during induced hypothermia. Ann Noninvasive Electrocardiol 2011;16(1):100–103  相似文献   
142.
143.
Coexistence of bicuspid aortic and pulmonary valves in the same patient is a very rare entity identified mainly during surgery and postmortem. To the best of our knowledge, only one case has been diagnosed by two‐dimensional echocardiography in a newborn with malposition of the great arteries but no images were presented. Here, we are reporting the first case of bicuspid pulmonary and aortic valves diagnosed by live/real time three‐dimensional transesophageal echocardiography in an adult with normally related great arteries.  相似文献   
144.
A 28‐year‐old man was admitted to our emergency service with a shortness of breath and palpitation. On admission, his blood pressure was high and he was in hypertensive pulmonary edema. His physical examination showed rales in both lungs and pansystolic murmur at mitral focus. His medical history included aortic valve replacement (AVR) because of native aortic valve infective endocarditis. Transthoracic echocardiography (TTE) showed normal functional aortic valve. Color flow imaging demonstrated severe mitral regurgitation with posterior eccentric jet. To examine in detail, transesophageal echocardiography (TEE) and three‐dimensional (3D) echocardiography were performed. TEE disclosed a separation in the subaortic curtain leading to severe mitral regurgitation from the left ventricle to the left atrium. In addition to severe mitral regurgitation with posterior eccentric jet, 26‐mm‐long pouch was seen in mitral‐aortic intervalvular fibrosa (MAIVF) at 120° TEE view. This pouch was separated from the mitral anterior leaflet junction releasing the mitral anterior leaflet and causing prolapse and chorda rupture in the A2 scallop of the mitral anterior leaflet. The MAIVF connects the anterior mitral leaflet to the posterior portion of the aortic annulus. The separation of the MAIVF represents a complication of the aortic valve replacement.  相似文献   
145.
146.
Prevalence of sexual dysfunctions is reported as high as 70% during pregnancy. However, there are limited data about the burden of sexual dysfunction in pregnant adolescents. This cross-sectional study was conducted in the outpatient antenatal clinic of our institution between October and December 2014. The total female sexual function index scores and domain scores were compared between adolescent and adult pregnant women. A total of 121 pregnant women participated in the study. Of those women, 29 (24.0%) were 21 years old or younger (Group 1), whereas the remaining were older (Group 2). The sexual dysfunction ratios were 41.4% and 23.9% in Groups 1 and 2, respectively (p = 0.068). The desire (3.29 vs. 2.79, p = 0.024) and arousal (3.48 vs. 2.71, p = 0.008) domain scores of adolescent pregnant women were significantly higher whereas the remaining domain scores (i.e. lubrication, orgasm, satisfaction and pain) were not significantly different. The adolescent women seem to be more prone to sexual dysfunctions during the course of pregnancy, especially in the third trimester. The health care providers should consider discussing the sexual life during pregnancy as a part of routine antenatal visit to improve sexual function and quality of life, especially among adolescent pregnant population.  相似文献   
147.
148.
149.
150.
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