全文获取类型
收费全文 | 2006714篇 |
免费 | 167470篇 |
国内免费 | 7688篇 |
专业分类
耳鼻咽喉 | 27310篇 |
儿科学 | 62530篇 |
妇产科学 | 56448篇 |
基础医学 | 280535篇 |
口腔科学 | 57051篇 |
临床医学 | 179745篇 |
内科学 | 401619篇 |
皮肤病学 | 45463篇 |
神经病学 | 164820篇 |
特种医学 | 82014篇 |
外国民族医学 | 431篇 |
外科学 | 314722篇 |
综合类 | 51372篇 |
现状与发展 | 4篇 |
一般理论 | 653篇 |
预防医学 | 160574篇 |
眼科学 | 45168篇 |
药学 | 143979篇 |
5篇 | |
中国医学 | 3541篇 |
肿瘤学 | 103888篇 |
出版年
2018年 | 19257篇 |
2016年 | 17955篇 |
2015年 | 20432篇 |
2014年 | 28745篇 |
2013年 | 43321篇 |
2012年 | 54672篇 |
2011年 | 58326篇 |
2010年 | 35726篇 |
2009年 | 34511篇 |
2008年 | 54771篇 |
2007年 | 58890篇 |
2006年 | 59782篇 |
2005年 | 58089篇 |
2004年 | 56008篇 |
2003年 | 54315篇 |
2002年 | 51747篇 |
2001年 | 90930篇 |
2000年 | 93338篇 |
1999年 | 78357篇 |
1998年 | 23971篇 |
1997年 | 21589篇 |
1996年 | 22304篇 |
1995年 | 21998篇 |
1994年 | 20694篇 |
1993年 | 19492篇 |
1992年 | 65778篇 |
1991年 | 64257篇 |
1990年 | 62174篇 |
1989年 | 59401篇 |
1988年 | 55429篇 |
1987年 | 54600篇 |
1986年 | 51569篇 |
1985年 | 49970篇 |
1984年 | 38407篇 |
1983年 | 32539篇 |
1982年 | 20573篇 |
1981年 | 18721篇 |
1980年 | 17626篇 |
1979年 | 36363篇 |
1978年 | 26346篇 |
1977年 | 22236篇 |
1976年 | 20415篇 |
1975年 | 21730篇 |
1974年 | 26152篇 |
1973年 | 25042篇 |
1972年 | 23520篇 |
1971年 | 21649篇 |
1970年 | 20222篇 |
1969年 | 19285篇 |
1968年 | 17702篇 |
排序方式: 共有10000条查询结果,搜索用时 531 毫秒
121.
F. Giovanardi F. Nudo Q. Lai M. Garofalo A. Consolo E. Choppin De Janvry G.A. Arroyo Murillo P. Ursi D. Stabile F. Melandro P.B. Berloco R. Pretagostini L. Poli 《Transplantation proceedings》2019,51(1):128-131
Background
Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.Methods
During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.Results
No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.Conclusions
The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach. 相似文献122.
Paul J. Devlin Brian W. McCrindle James K. Kirklin Eugene H. Blackstone William M. DeCampli Christopher A. Caldarone Ali Dodge-Khatami Pirooz Eghtesady James M. Meza Peter J. Gruber Kristine J. Guleserian Bahaaladin Alsoufi Linda M. Lambert James E. OBrien Erle H. Austin Jeffrey P. Jacobs Tara Karamlou 《The Journal of thoracic and cardiovascular surgery》2019,157(2):684-695.e8
Objective
Arch obstruction after the Norwood procedure is common and contributes to mortality. We determined the prevalence, associated factors, and practice variability of arch reintervention and assessed whether arch reintervention is associated with mortality.Methods
From 2005 to 2017, 593 neonates in the Congenital Heart Surgeons' Society Critical Left Heart Obstruction cohort underwent a Norwood procedure. Median follow-up was 3.7 years. Multivariable parametric models, including a modulated renewal analysis, were performed.Results
Of the 593 neonates, 146 (25%) underwent 218 reinterventions for arch obstruction after the Norwood procedure: catheter-based (n = 168) or surgical (n = 50) at a median age of 4.3 months (quartile 1-quartile 3, 2.6-5.7). Interdigitation of the distal aortic anastomosis was protective against arch reintervention. Development of ≥ moderate tricuspid valve regurgitation and right ventricular dysfunction at any point was associated with arch reintervention. Nonsignificant variables for arch reintervention included shunt type and preoperative aortic measurements. Surgical arch reintervention was protective against arch reintervention, but transcatheter reintervention was associated with increased reintervention. Arch reintervention was not associated with increased mortality. There was wide institutional variation in incidence of arch reintervention (range, 0-40 reinterventions per 100 years patient follow-up) and in preintervention gradient (range, 0-64 mm Hg).Conclusions
Interdigitation of the distal aortic anastomosis during the Norwood procedure decreased the risk of arch reintervention. Surgical arch reintervention is more definitive than transcatheter. Arch reintervention after the Norwood procedure is not associated with increased mortality. Serial surveillance for arch obstruction, integrated with changes in right ventricular function and tricuspid valve regurgitation, is recommended after the Norwood procedure to improve outcomes. 相似文献123.
Are Dermatophytid Reactions in Patients with Kerion Celsi Much More Common Than Previously Thought? A Prospective Study
下载免费PDF全文
![点击此处可从《Pediatric dermatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Dermatophytid reactions are secondary eruptions in response to dermatophytosis. Only a few cases demonstrating an association between dermatophytid reactions and tinea capitis have been reported. Dermatophytid reactions were evaluated in patients diagnosed with kerion celsi. Patients admitted to the dermatology clinic of Van Regional Training and Research Hospital between November 22, 2012, and July 1, 2013, diagnosed with kerion celsi were evaluated for dermatophytid reactions. Six girls (32%) and 13 boys (68%) were included in this study. Dermatophytid reactions were detected in 13 of the 19 patients (68%). Seven patients (36.84%) had eczematous patches or plaques and three (15.8%) had papules. Eczematous lesions, papules, and pustules were noted in two patients (10.5%) and one (5.3%) had signs of an angioedema‐like reaction. Dermatophytid reactions in all patients were observed before the initiation of therapy. According to our clinical experiences, dermatophytid reactions in patients with kerion celsi were more common than reported. Eczematous scaly patches or plaques were the most frequently seen forms of dermatophytid in patients with kerion celsi. Dermatophytid reactions may occur before or after initiation of systemic antifungal therapy. Recognition of this reaction is important so that dermatophytids can be distinguished from drug reactions and the decision can be made whether to continue or to stop the systemic antifungal treatment. 相似文献
124.
125.
126.
127.
128.
129.
130.
Tselios Konstantinos Yap Kristy Su-Ying Pakchotanon Rattapol Polachek Ari Su Jiandong Urowitz Murray B. Gladman Dafna D. 《Clinical rheumatology》2019,38(1):269-269
Clinical Rheumatology - Prof. Ari Polachek on of the author of the published version of this article missed to add his second affiliation which is the Department of Rheumatology, Tel Aviv Sourasky... 相似文献