全文获取类型
收费全文 | 390153篇 |
免费 | 21174篇 |
国内免费 | 15470篇 |
专业分类
耳鼻咽喉 | 3008篇 |
儿科学 | 8713篇 |
妇产科学 | 5923篇 |
基础医学 | 42358篇 |
口腔科学 | 5206篇 |
临床医学 | 42893篇 |
内科学 | 62933篇 |
皮肤病学 | 2859篇 |
神经病学 | 28334篇 |
特种医学 | 17009篇 |
外国民族医学 | 138篇 |
外科学 | 49956篇 |
综合类 | 37337篇 |
现状与发展 | 55篇 |
一般理论 | 19篇 |
预防医学 | 30894篇 |
眼科学 | 9393篇 |
药学 | 31824篇 |
195篇 | |
中国医学 | 12894篇 |
肿瘤学 | 34856篇 |
出版年
2024年 | 700篇 |
2023年 | 3559篇 |
2022年 | 9200篇 |
2021年 | 11577篇 |
2020年 | 8605篇 |
2019年 | 7605篇 |
2018年 | 29182篇 |
2017年 | 23895篇 |
2016年 | 25563篇 |
2015年 | 11103篇 |
2014年 | 13308篇 |
2013年 | 11402篇 |
2012年 | 22706篇 |
2011年 | 38348篇 |
2010年 | 28841篇 |
2009年 | 19415篇 |
2008年 | 30222篇 |
2007年 | 32408篇 |
2006年 | 11675篇 |
2005年 | 13390篇 |
2004年 | 10220篇 |
2003年 | 10805篇 |
2002年 | 7892篇 |
2001年 | 5187篇 |
2000年 | 5739篇 |
1999年 | 5836篇 |
1998年 | 3713篇 |
1997年 | 3695篇 |
1996年 | 2900篇 |
1995年 | 2706篇 |
1994年 | 2234篇 |
1993年 | 1432篇 |
1992年 | 1925篇 |
1991年 | 1678篇 |
1990年 | 1409篇 |
1989年 | 1165篇 |
1988年 | 1064篇 |
1987年 | 927篇 |
1986年 | 748篇 |
1985年 | 553篇 |
1984年 | 354篇 |
1983年 | 261篇 |
1982年 | 173篇 |
1981年 | 145篇 |
1980年 | 150篇 |
1979年 | 144篇 |
1975年 | 62篇 |
1974年 | 75篇 |
1938年 | 64篇 |
1932年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Introduction Choroid plexus cysts can lead to isolation of the lateral ventricles and distension of the third ventricle. We present an
ultrasonographic video documentation of an infant with variably shaped and localized choroid plexus cyst of the third ventricle.
Case report An infant had periods of increased intracranial pressure with changing dilatation of the first to third ventricle. Cerebral
ultrasonography of the not crying boy demonstrated a choroid plexus cyst limply hanging down from the roof of the third ventricle
to the beginning of the aqueduct of Sylvius. During crying, the cyst prolapsed from the third into left lateral ventricle
and was strangled by the foramen of Monro. Endoscopic cyst fenestration and third ventriculostomy continuously solved the
problem of intermittent hydrocephalus occlusus.
Conclusion Depending not only on localization and size but also on cyst form and cerebrospinal fluid pressure, a single choroid plexus
cyst can cause various obstructions of cerebrospinal fluid pathways. 相似文献
52.
Background
Health service policy in the United Kingdom emphasises the importance of self-care by patients with chronic conditions. Written information for patients about their condition is seen as an important aid to help patients look after themselves. From a discourse analysis perspective written texts such as patient information leaflets do not simply describe the reality of a medical condition and its management but by drawing on some sorts of knowledge and evidence rather than others help construct the reality of that condition. This study explored patient information leaflets on osteoarthritis (OA) to see how OA was constructed and to consider the implications for self-care. 相似文献53.
Gelin Xu Xinfeng Liu Wusheng Zhu Qin Yin Renliang Zhang Xiaobing Fan 《Blood coagulation & fibrinolysis》2007,18(2):193-197
This study evaluated the safety and efficacy of batroxobin in treating hyperfibrinogenemia for secondary stroke prevention. Patients with ischemic stroke or transient ischemic attack (TIA) were measured for plasma fibrinogen levels. Selected participants had concomitant hyperfibrinogenemia (plasma fibrinogen > or = 3.0 g/l). Patients enrolled between 1 July 2003 and 31 December 2004 were treated with batroxobin; patients enrolled between 1 January 2002 and 30 June 2003 were treated without batroxobin. Batroxobin was administered intermittently via intravenous injection at 3-monthly intervals. Patients in both groups were followed for 1 year. Any cerebrovascular events and suspected adverse events were recorded. In total, 112 ischemic stroke/TIA patients with concomitant hyperfibrinogenemia were enrolled, 52 being treated with batroxobin and 60 without batroxobin. Six patients (11.5%) with batroxobin and 16 patients (26.7%) without batroxobin had recurrent cerebral ischemic events during follow-up. Stroke/TIA recurrence in patients without batroxobin was higher than that in patients with batroxobin (P < 0.05). Two patients with batroxobin and two patients without batroxobin developed hemorrhagic stroke during follow-up. There were five deaths (9.6%) in the batroxobin group, and seven deaths (11.7%) in the nonbatroxobin group during follow-up (P > 0.05). Intermittent intravenous injection of batroxobin can efficiently reduce the risk for stroke/TIA recurrence in patients with concomitant hyperfibrinogenemia. 相似文献
54.
Isolated pure dislocations of the fifth carpo-metacarpal joint are extremely rare injuries. The dorsal form was described
in mere 12 cases. The diagnosis can be easily missed. The lesion is also often overlooked in the routine diagnostic X-ray.
Lateral and oblique views are important for the recognition of the true extent of the lesion. Treatment of these injures is
still controversial and both closed reduction with percutaneous pinning or open reduction with internal fixation are advocated.
The goal of treatment is early reduction and fixation of the metacarpal. Early diagnosis is the key to success. The aim of
this paper is to review literature and present two new cases. 相似文献
55.
一般护理记录单是住院病历的一部分,根据卫生部、中医药管理局公布的《病历书写基本规范》(试行)的规定,一般护理记录的定义是:护士根据医嘱和病情对一般病人住院期间护理过程的客观记录,内容包括病人姓名、记录日期和时间、病情观察、护理措施和效果、护士签名。现将护士在一般护理书写中存在认识上的理解偏差分析如下。 相似文献
56.
Healthcare information systems (HISs) are often implemented to enhance the quality of care and the degree to which it is patient-centered,
as well as to improve the efficiency and safety of services. However, the outcomes of HIS implementations have not met expectations.
We set out to organize the knowledge gained in qualitative studies performed in association with HIS implementations and to
use this knowledge to outline an updated structure for implementation planning. A multi-disciplinary team performed the analyses
in order to cover as many aspects of the primary studies as possible. We found that merely implementing an HIS will not automatically
increase organizational efficiency. Strategic, tactical, and operational actions have to be taken into consideration, including
management involvement, integration in healthcare workflow, establishing compatibility between software and hardware and,
most importantly, user involvement, education and training. The results should be interpreted as a high-order scheme, and
not a predictive theory. 相似文献
57.
58.
Factors affecting aseptic loosening of 4750 total hip arthroplasties: multivariate survival analysis
Barbara Bordini Susanna Stea Manuela De Clerico Sergio Strazzari Antonio Sasdelli Aldo Toni 《BMC musculoskeletal disorders》2007,8(1):69
Background
Total hip arthroplasty is a successful surgery, that fails at a rate of approximately 10% at ten years from surgery. Causes for failure are mainly aseptic loosening of one or both components partially due to wear of articular surfaces and partially to design. The present analysis aimed to identify risk factors and quantify their effects on aseptic failure. 相似文献59.
Michael T Fitch David E Manthey Henderson D McGinnis Bret A Nicks Manoj Pariyadath 《BMC medical education》2008,8(1):38