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   9036篇
  免费   779篇
  国内免费   17篇
耳鼻咽喉   87篇
儿科学   280篇
妇产科学   166篇
基础医学   1209篇
口腔科学   177篇
临床医学   979篇
内科学   1791篇
皮肤病学   159篇
神经病学   688篇
特种医学   253篇
外科学   1313篇
综合类   91篇
一般理论   11篇
预防医学   1044篇
眼科学   144篇
药学   618篇
中国医学   4篇
肿瘤学   818篇
  2023年   113篇
  2022年   208篇
  2021年   453篇
  2020年   260篇
  2019年   382篇
  2018年   444篇
  2017年   307篇
  2016年   312篇
  2015年   322篇
  2014年   451篇
  2013年   513篇
  2012年   791篇
  2011年   731篇
  2010年   393篇
  2009年   273篇
  2008年   498篇
  2007年   403篇
  2006年   382篇
  2005年   346篇
  2004年   361篇
  2003年   259篇
  2002年   272篇
  2001年   116篇
  2000年   97篇
  1999年   105篇
  1998年   47篇
  1997年   55篇
  1996年   49篇
  1995年   38篇
  1994年   48篇
  1993年   20篇
  1992年   51篇
  1991年   45篇
  1990年   75篇
  1989年   58篇
  1988年   43篇
  1987年   37篇
  1986年   28篇
  1985年   35篇
  1984年   22篇
  1983年   20篇
  1979年   26篇
  1978年   34篇
  1977年   19篇
  1976年   26篇
  1975年   19篇
  1974年   23篇
  1973年   25篇
  1972年   24篇
  1969年   22篇
排序方式: 共有9832条查询结果,搜索用时 0 毫秒
91.
Nissen fundoplication is applied for patients with gastroesophageal reflux disease (GERD), usually because of symptoms of esophageal injury. When presenting symptoms are extraesophageal, there is less enthusiasm for operative control of reflux because of concerns of etiology and efficacy. This study was undertaken to evaluate the efficacy of laparoscopic Nissen fundoplication in palliating extraesophageal symptoms of GERD. Patients were asked to score their symptoms before and after laparoscopic Nissen fundoplication on a Likert scale (0 = never/none to 5 = always/every time I eat). A total of 322 patients with extraesophageal symptoms (asthma, cough, gas/bloat, chest pain, and odynophagia) of 4 to 5 were identified and analyzed. After fundoplication, all extraesophageal symptom scores improved (P < 0.0001 for all, Wilcoxon matched-pairs test). Likewise, postoperative symptoms were noted to be greatly improved or resolved in 67 per cent to 82 per cent of patients for each symptom. Furthermore, after fundoplication, patients were less likely to modify their dietary (82% vs 49%) or sleeping habits (70% vs 28%) to avoid initiating/ exacerbating symptoms. Although extraesophageal symptoms are conventionally thought to be inadequately palliated by surgery, this study documents excellent relief of extraesophageal symptoms after laparoscopic Nissen fundoplication, denotes high patient satisfaction, and encourages application of laparoscopic Nissen fundoplication.  相似文献   
92.
Background: A key feature of health professionals’ training, irrespective of discipline, is the acquisition and application of clinical and communication skills. Despite this, little is known about the potential role of patient feedback on this process. This systematic review aimed to answer the question: How does feedback from patients impact upon healthcare student clinical skill development and learning?

Design: Systematic review of published literature.

Methods: Electronic databases were searched for studies that explored the effects of patient feedback on student learning and were published before March 2016. Eligible articles underwent methodological evaluation using the McMaster University Critical Evaluation Forms and data extraction.

Results: A total of 237 articles were retrieved following searches of electronic databases and hand searches of reference lists. Twelve (7 quantitative, 2 qualitative, 3 mixed methods) studies met the inclusion criteria. Eleven studies reported that patient feedback improved students’ clinical skills.

Conclusion: Minimal research has explored the impact of patient feedback on student learning. The research to date suggests that direct feedback from patients may be beneficial for the development of students’ communication and clinical skills; however, the wide variety of evaluation methods and the lack of validated tools for patients to provide feedback suggest that further exploration is warranted.  相似文献   
93.
94.
95.
96.
97.
Today’s fragrances are present in more than just perfumes, having become ubiquitous in skin care products such as creams, shampoos, sun tan lotion and deodorants. While aromatics can arouse the senses, aromatic compounds applied to skin can also cause allergic contact dermatitis. This article describes diagnosis, limitations of patch testing for fragrance mix 1 and fragrance mix 2, the relevance of fragrance concentration in products, use testing of common consumer products and our current recommendations in regards to the management of fragrance contact allergy.  相似文献   
98.
99.

Background

The Centers for Medicare and Medicaid Services (CMS) model for publicly reporting national 30-day-risk-adjusted mortality rates for patients admitted with heart failure fails to include clinical variables known to impact total mortality or take into consideration the culture of end-of-life care. We sought to determine if those variables were related to the 30-day mortality of heart failure patients at Geisinger Medical Center.

Methods

Electronic records were searched for patients with a diagnosis of heart failure who died from any cause during hospitalization or within 30 days of admission.

Results

There were 646 heart-failure-related admissions among 530 patients (1.2 admissions/patient). Sixty-seven of the 530 (13%) patients died: 35 (52%) died during their hospitalization and 32 (48%) died after discharge but within 30 days of admission; of these, 27 (40%) had been transferred in for higher-acuity care. Fifty-one (76%) died from heart failure, and 16 (24%) from other causes. Fifty-five (82%) patients were classified as American Heart Association Stage D, 58 (87%) as New York Heart Association Class IV, and 30 (45%) had right-ventricular systolic dysfunction. None of the 32 patients who died after discharge met recommendations for beta-blockers. Criteria for prescribing angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, and mineralocorticoid receptor blockers were not met by 33 of the 34 patients (97%) with heart failure with reduced ejection fraction not on one of those drugs. Fifty-seven patients (85%) had a do-not-resuscitate (DNR) status.

Conclusion

A majority of heart failure-related mortality was among patients who opted for a DNR status with end-stage heart failure, limiting the appropriateness of administering evidence-based therapies. No care gaps were identified that contributed to mortality at our institution. The CMS 30-day model fails to take important variables into consideration.  相似文献   
100.
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