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   609篇
  免费   41篇
  国内免费   6篇
耳鼻咽喉   8篇
儿科学   2篇
妇产科学   13篇
基础医学   61篇
口腔科学   26篇
临床医学   42篇
内科学   14篇
皮肤病学   2篇
神经病学   24篇
特种医学   20篇
外科学   147篇
综合类   52篇
预防医学   6篇
眼科学   201篇
药学   18篇
中国医学   3篇
肿瘤学   17篇
  2024年   2篇
  2023年   13篇
  2022年   9篇
  2021年   31篇
  2020年   23篇
  2019年   29篇
  2018年   32篇
  2017年   21篇
  2016年   20篇
  2015年   16篇
  2014年   23篇
  2013年   47篇
  2012年   29篇
  2011年   27篇
  2010年   23篇
  2009年   29篇
  2008年   36篇
  2007年   31篇
  2006年   24篇
  2005年   28篇
  2004年   12篇
  2003年   15篇
  2002年   8篇
  2001年   10篇
  2000年   11篇
  1999年   6篇
  1998年   9篇
  1997年   6篇
  1996年   8篇
  1995年   9篇
  1994年   3篇
  1993年   4篇
  1992年   2篇
  1991年   6篇
  1990年   5篇
  1989年   4篇
  1988年   5篇
  1987年   3篇
  1986年   3篇
  1985年   10篇
  1984年   8篇
  1983年   3篇
  1982年   2篇
  1981年   2篇
  1980年   2篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1973年   2篇
排序方式: 共有656条查询结果,搜索用时 15 毫秒
1.
S. G. Brearley  S. Varey  A. Krige 《Anaesthesia》2023,78(10):1249-1255
Adequate postoperative analgesia is a key element of enhanced recovery programmes. Thoracic epidural analgesia is associated with superior postoperative analgesia but can lead to complications. Rectus sheath catheter analgesia may provide an alternative. In a nested qualitative study (within a two-year randomised controlled trial) focussing on the acceptability, expectations and experiences of receiving the interventions, participants (n = 20) were interviewed 4 weeks post-intervention using a grounded theory approach. Constant comparative analysis, with patient and public involvement, enabled emerging findings to be pursued through subsequent data collection. We found no notable differences regarding postoperative acceptability or the experience of pain management. Pre-operatively, however, thoracic epidural analgesia was a source of anticipatory fear and anxiety. Both interventions resulted in some experienced adverse events (proportionately more with thoracic epidural analgesia). Participants had negative experiences of the insertion of thoracic epidural analgesia; others receiving the rectus sheath catheter lacked confidence in staff members' ability to manage the local anaesthetic infusion pump. The anticipation of the technique of thoracic epidural analgesia, and concerns about its impact on mobility, represented an additional, unpleasant experience for patients already managing an illness experience, anticipating a life-changing operation and dealing with concerns about the future. The anticipation of rectus sheath catheter analgesia was not associated with such anxieties. Patients' experiences start far earlier than the experience of the intervention itself through anticipatory anxieties and fears about receiving a technique and its potential implications. Complex pain packages can take on greater meaning than their actual efficacy in relieving postoperative pain. Future research into patient acceptability and experience should not focus solely on efficacy of pain relief but should include anticipatory fears, anxieties and experiences.  相似文献   
2.
3.
4.
目的:比较双眼外直肌后徙术与常规疗法治疗斜视的临床疗效。方法:选取2016年6月-2017年6月笔者医院收治的128例斜视患者,按治疗方式不同分成对照组和研究组,每组各64例。其中对照组患者行常规单眼外直肌后徙联合内直肌缩短术(R&R),研究组患者行双眼外直肌后徙术(BLR-rec)。术后对患者随访1年,观察术后眼位正位率、欠矫率、过矫率,视觉功能恢复情况以及并发症发生率。结果:研究组患者正位率为89.06%高于对照组的68.75%,差异有统计学意义(P<0.05)。术前,对照组和研究组患者视近度、视远度和平均斜视度比较,两组患者融合功能和立体视功能占比比较,差异均无统计学意义(P>0.05)。术后,两组患者的斜视度较治疗前均出现了明显下降(P<0.05),且研究组治疗后斜视度下降幅度明显大于对照组(P<0.05);两组患者视觉功能恢复率均明显增加(P<0.05),且研究组恢复率明显大于对照组(P<0.05)。研究组并发症发生率明显低于对照组(P<0.05)。结论:双眼外直肌后徙术较单眼外直肌后徙联合内直肌缩短术有更好地临床效果,且安全性更高,值得临床推广。  相似文献   
5.
BackgroundThe purpose of this article is to illuminate differences in published clinical practice guideline recommendations for breast reconstruction after prophylactic and therapeutic mastectomy.MethodsTen guidelines were identified through a systematic search of websites and databases of reputable oncology guideline developers, and key differences and gaps in recommendations were noted. Quality assessment of the guidelines was conducted by three reviewers using the AGREE II tool, focusing on breast reconstruction specific documents rather than the general breast cancer guidelines.ResultsThe most comprehensive guidelines were published by Alberta Health Services, Cancer Care Ontario, the American Society of Plastic Surgeons, and the Association of Breast Surgery/British Association of Plastic Reconstructive and Aesthetic Surgeons. AGREE II scores in the domains of “Scope and Purpose” and “Clarity and Presentation” were ranked relatively high for all four guidelines while “Applicability” and “Editorial Independence” were ranked relatively low. The Alberta and Ontario guidelines were the overall highest ranked guidelines across all domains.ConclusionOverall, these guidelines provide consistent recommendations on who should receive breast reconstruction education, who is a candidate for postmastectomy breast reconstruction, and the appropriate timing of reconstruction and extent of mastectomy. Future updates from all should focus on expanding to include alloplastic and autologous forms of reconstruction and should include a broad scope of relevant questions.  相似文献   
6.
7.
8.
罗晓燕  何炯  杜娟 《国际眼科杂志》2022,22(12):2095-2098

目的:研究不同手术方法治疗儿童基本型外斜视与术后侧转非共同性发生及矫正效果相关性。

方法:回顾性研究。选取2018-06/2020-12于我院眼科接受治疗的180例基本型外斜视患儿临床资料。根据手术方式分为单眼一退一截术组(R&R组)104例和双眼外直肌后徙术组(BLR-rec组)76例。比较两组患者一般资料、手术矫正效果,以及随访期间手术斜视度数、侧转非共同性发生情况。

结果:两组患者术后3d,1、6mo视近、视远斜视度比较均无差异(均P>0.05)。R&R组术后不同时间点正位率高于BLR-rec组(P<0.05)。R&R组较BLR-rec组发生侧转非共同性的风险更低(OR=0.524, Wald χ2=4.260, P=0.039)。两组患者术后6mo主要表现在水平直肌手术眼外展方向注视,但两组患儿视远和视近侧转非共同性发生率均无差异(均P>0.05)。

结论:R&R对于儿童基本型外斜视的矫正效果优于BLR-rec术式,可降低侧转非共同性发生情况。  相似文献   

9.
AIM: The aim of this study was to investigate the presence of antigens with immunological cross-reactivity in periodontopathogenic bacteria and Helicobacter pylori, the pathogen associated with gastritis and peptic ulcers in human. MATERIALS AND METHODS/RESULTS: Among the putative periodontopathogens tested (Actinobacillus actinomycetemcomitans, Campylobacter rectus, Fusobacterium nucleatum, Porphyromonas gingivalis, Prevotella intermedia and Treponema denticola), cross-reactive bands were only detected in C. rectus by SDS-PAGE/Western immunoblotting analysis using a polyclonal antibody directed to H. pylori cells. One of these cross-reactive antigens, a 64-kDa band antigen, also reacted with a monoclonal antibody directed to the human heat shock protein (HSP) 60. The N-terminal amino acid sequence of this C. rectus protein revealed a high degree of homology with corresponding regions of other HSPs belonging to the HSP60 family, indicating that the 64-kDa antigen was a GroEL protein. The nucleotide sequence of the C. rectus GroEL protein coded for a 547 amino acid protein with a predicted size of 57.8 kDa. Comparison of the alignment of the deduced amino acid sequence of the GroEL protein of C. rectus with that of H. pylori showed a high degree of similarity throughout its length (76.8%). GroEL protein from C. rectus possessed the ability to stimulate production of IL-6 by a confluent monolayer of human gingival epithelial cells and was cytotoxic when used at a high concentration. CONCLUSIONS: This study reveals an immunological relationship between H. pylori and C. rectus, and clearly indicates that one of the shared antigens is a GroEL protein possessing a biological activity that might play a role in the initiation and progression of periodontal disease.  相似文献   
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