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   1282466篇
  免费   98067篇
  国内免费   2011篇
耳鼻咽喉   18457篇
儿科学   44430篇
妇产科学   35084篇
基础医学   182694篇
口腔科学   33615篇
临床医学   111714篇
内科学   258990篇
皮肤病学   28081篇
神经病学   100815篇
特种医学   51305篇
外国民族医学   661篇
外科学   197024篇
综合类   27077篇
现状与发展   1篇
一般理论   378篇
预防医学   95948篇
眼科学   27937篇
药学   95078篇
  2篇
中国医学   2427篇
肿瘤学   70826篇
  2018年   13262篇
  2017年   10065篇
  2016年   11013篇
  2015年   12490篇
  2014年   17308篇
  2013年   26410篇
  2012年   36323篇
  2011年   38344篇
  2010年   22977篇
  2009年   21949篇
  2008年   36858篇
  2007年   39477篇
  2006年   39691篇
  2005年   38644篇
  2004年   37779篇
  2003年   36607篇
  2002年   35952篇
  2001年   64034篇
  2000年   66534篇
  1999年   56439篇
  1998年   15167篇
  1997年   13773篇
  1996年   14217篇
  1995年   13467篇
  1994年   12786篇
  1993年   11806篇
  1992年   44584篇
  1991年   43483篇
  1990年   42244篇
  1989年   40135篇
  1988年   36918篇
  1987年   36259篇
  1986年   33635篇
  1985年   32304篇
  1984年   24161篇
  1983年   20279篇
  1982年   11730篇
  1981年   10693篇
  1980年   9519篇
  1979年   21358篇
  1978年   14827篇
  1977年   12537篇
  1976年   11695篇
  1975年   12628篇
  1974年   14672篇
  1973年   14124篇
  1972年   12945篇
  1971年   11734篇
  1970年   11059篇
  1969年   10029篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
85.
86.

Aim

The purpose of this study is to find out whether telephone referral from Primary Health Care to Internal Medicine Consult manages to reduce waiting days as compared to traditional referral. This study also aims to know how acceptable is the telephone referral to general practitioners and their patients.

Design

No blind randomized controlled clinical trial.

Setting

Northern Huelva Health District.

Participants

154 patients.

Interventions

Patients referrals from intervention clinicians were sent via telephone consultation, whereas patients referrals from control clinicians were sent by traditional via.

Measurements

Number of days from referral request to Internal Medicine Consult. Number of telephone and traditional referrals. Number of doctors and patients denied. Denial reasons.

Results

A statistically significant difference was found between groups, with an average of 27 (21-34) days. Among General Practitioners, 8 of the first 58 total doctors after randomization and, subsequently, 6 of the 20 doctors of the test group refused to engage in the trial because they considered “excessive time and effort consuming”. 50% of patients referred by the 14 General Practitioners finally randomized to the intervention group were denied referral by telephone due to patient's complexity.

Conclusions

Telephone referral significantly reduces waiting days for Internal Medicine consult. This type of referral did not mean an “excessive time and effort consuming” to General Practitioners and was not all that beneficial to complex patients  相似文献   
87.
88.
Postoperative pulmonary complications are associated with an increase in mortality, morbidity and healthcare utilisation. The Agency for Healthcare Research and Quality recommends risk assessment for postoperative respiratory complications in patients undergoing surgery. In this hospital registry study of adult patients undergoing non-cardiac surgery between 2005 and 2017 at two independent healthcare networks, a prediction instrument for early postoperative tracheal re-intubation was developed and externally validated. This was based on the development of the Score for Prediction Of Postoperative Respiratory Complications. For predictor selection, stepwise backward logistic regression and bootstrap resampling were applied. Development and validation cohorts were represented by 90,893 patients at Partners Healthcare and 67,046 patients at Beth Israel Deaconess Medical Center, of whom 699 (0.8%) and 587 (0.9%) patients, respectively, had their tracheas re-intubated. In addition to five pre-operative predictors identified in the Score for Prediction Of Postoperative Respiratory Complications, the final model included seven additional intra-operative predictors: early post-tracheal intubation desaturation; prolonged duration of surgery; high fraction of inspired oxygen; high vasopressor dose; blood transfusion; the absence of volatile anaesthetic use; and the absence of lung-protective ventilation. The area under the receiver operating characteristic curve for the new score was significantly greater than that of the original Score for Prediction Of Postoperative Respiratory Complications (0.84 [95%CI 0.82–0.85] vs. 0.76 [95%CI 0.75–0.78], respectively; p < 0.001). This may allow clinicians to develop and implement strategies to decrease the risk of early postoperative tracheal re-intubation.  相似文献   
89.
90.
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