全文获取类型
收费全文 | 1278889篇 |
免费 | 97810篇 |
国内免费 | 1989篇 |
专业分类
耳鼻咽喉 | 18424篇 |
儿科学 | 44360篇 |
妇产科学 | 35025篇 |
基础医学 | 182224篇 |
口腔科学 | 33587篇 |
临床医学 | 111252篇 |
内科学 | 258230篇 |
皮肤病学 | 28023篇 |
神经病学 | 100364篇 |
特种医学 | 51201篇 |
外国民族医学 | 660篇 |
外科学 | 196399篇 |
综合类 | 27055篇 |
现状与发展 | 1篇 |
一般理论 | 377篇 |
预防医学 | 95725篇 |
眼科学 | 27914篇 |
药学 | 94769篇 |
2篇 | |
中国医学 | 2422篇 |
肿瘤学 | 70674篇 |
出版年
2018年 | 13135篇 |
2017年 | 9963篇 |
2016年 | 10897篇 |
2015年 | 12376篇 |
2014年 | 17167篇 |
2013年 | 26220篇 |
2012年 | 36021篇 |
2011年 | 38058篇 |
2010年 | 22807篇 |
2009年 | 21814篇 |
2008年 | 36645篇 |
2007年 | 39255篇 |
2006年 | 39510篇 |
2005年 | 38442篇 |
2004年 | 37593篇 |
2003年 | 36446篇 |
2002年 | 35797篇 |
2001年 | 63991篇 |
2000年 | 66497篇 |
1999年 | 56417篇 |
1998年 | 15129篇 |
1997年 | 13755篇 |
1996年 | 14197篇 |
1995年 | 13455篇 |
1994年 | 12765篇 |
1993年 | 11791篇 |
1992年 | 44556篇 |
1991年 | 43471篇 |
1990年 | 42223篇 |
1989年 | 40119篇 |
1988年 | 36899篇 |
1987年 | 36242篇 |
1986年 | 33623篇 |
1985年 | 32278篇 |
1984年 | 24139篇 |
1983年 | 20271篇 |
1982年 | 11724篇 |
1981年 | 10691篇 |
1980年 | 9522篇 |
1979年 | 21348篇 |
1978年 | 14824篇 |
1977年 | 12534篇 |
1976年 | 11695篇 |
1975年 | 12628篇 |
1974年 | 14662篇 |
1973年 | 14117篇 |
1972年 | 12945篇 |
1971年 | 11729篇 |
1970年 | 11051篇 |
1969年 | 10025篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
Interaction effects between the 5‐hydroxy tryptamine transporter‐linked polymorphic region (5‐HTTLPR) genotype and family conflict on adolescent alcohol use and misuse
下载免费PDF全文
![点击此处可从《Addiction (Abingdon, England)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
105.
106.
107.
Luis Miguel Azogil-López Juan José Pérez-Lázaro Patricia Ávila-Pecci Esther María Medrano-Sánchez María Valle Coronado-Vázquez 《Atencion primaria / Sociedad Espa?ola de Medicina de Familia y Comunitaria》2019,51(5):278-284
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108.
109.
A. Prado Rodríguez R. Mato Búa L. Mera Mujico J. Arca Suárez M. López Sánchez L. Sampayo Rodríguez P. Rama-Maceiras 《Revista espa?ola de anestesiología y reanimación》2021,68(6):361-366
Serum lactate is a non-specific marker of tissue hypoperfusion. Elevated serum lactate is used in the differential diagnosis of acute intestinal ischemia. Although this practice is controversial, in the absence of other validated markers lactate is still used because of its high sensitivity.We present the cases of two patients who developed acute mesenteric ischemia as a post-surgical complication. The patients reported moderate abdominal pain —a non-specific symptom in the postoperative context— and tests showed progressively increasing serum lactate levels, which facilitated suspicion and subsequent diagnostic confirmation through an imaging test.These cases highlight the physiopathological importance of lactate elevation in the perioperative context and of performing a differential diagnosis of its possible causes, including mesenteric ischemia. Although the outcome was negative in the first case, early suspicion allowed us to make an effective diagnosis and administer appropriate treatment in the second patient. 相似文献
110.
C. Lukannek S. Shaefi K. Platzbecker D. Raub P. Santer S. Nabel H.S. Lecamwasam T.T. Houle M. Eikermann 《Anaesthesia》2019,74(9):1165-1174
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