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   125608篇
  免费   9743篇
  国内免费   3167篇
耳鼻咽喉   1251篇
儿科学   7201篇
妇产科学   3829篇
基础医学   13716篇
口腔科学   1568篇
临床医学   13333篇
内科学   21035篇
皮肤病学   2409篇
神经病学   10524篇
特种医学   2747篇
外国民族医学   3篇
外科学   11276篇
综合类   18352篇
现状与发展   15篇
预防医学   7364篇
眼科学   2255篇
药学   6374篇
  60篇
中国医学   13387篇
肿瘤学   1819篇
  2024年   409篇
  2023年   2243篇
  2022年   4647篇
  2021年   6122篇
  2020年   5636篇
  2019年   4472篇
  2018年   4395篇
  2017年   4574篇
  2016年   4686篇
  2015年   4440篇
  2014年   8737篇
  2013年   8879篇
  2012年   7149篇
  2011年   8225篇
  2010年   6402篇
  2009年   6123篇
  2008年   5955篇
  2007年   6078篇
  2006年   5483篇
  2005年   4524篇
  2004年   3853篇
  2003年   3416篇
  2002年   2372篇
  2001年   2144篇
  2000年   1871篇
  1999年   1734篇
  1998年   1409篇
  1997年   1326篇
  1996年   1266篇
  1995年   1243篇
  1994年   1051篇
  1993年   935篇
  1992年   850篇
  1991年   652篇
  1990年   602篇
  1989年   497篇
  1988年   498篇
  1987年   448篇
  1986年   389篇
  1985年   508篇
  1984年   415篇
  1983年   260篇
  1982年   339篇
  1981年   306篇
  1980年   250篇
  1979年   206篇
  1978年   129篇
  1977年   102篇
  1976年   87篇
  1975年   39篇
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
31.
Abstract: Stellate ganglion block is commonly used to treat the sympathetically maintained pain which may occur in one‐third of patients with complex regional pain syndrome type 1. A complication that followed a single block and presented a diagnostic dilemma for the ophthalmologist is reported.  相似文献   
32.
ABSTRACT. Hultcrantz R, Angelin B, Einarsson K, Friman L (Departments of Internal Medicine and Roentgenology, Serafimer Hospital, and Department of Internal Medicine, Huddinge University Hospital, Karolinska Institute, Stockholm, Sweden). Spontaneous regression of Budd-Chiari syndrome (hepatic venous occlusion) in a young female. Acta Med Scand 1987; 221:503–7. A case of occlusion of the hepatic veins in an 18-year-old girl is presented. The onset was sudden with massive ascites and markedly impaired general condition. The diagnosis was based on liver biopsy and angiograms of the caval and hepatic veins as well as of the celiac artery. No predisposing factors could be found. The patient was treated conservatively with laparo-centesis and diuretics. Clear improvement was seen after two weeks, and after four weeks she had no ascites and could be discharged. All liver function tests were then normalized. After three months, all diuretics could be withdrawn, and in the following 11 years she has remained completely recovered. The case illustrates that also widespread thrombi of the hepatic veins may sometimes rapidly dissolve spontaneously, with apparent total reconstitution of hepatic function. This case is unusual since previously reported cases have had high mortality rates and, in surviving cases, operative procedures or large doses of diuretics have been required to control the ascites.  相似文献   
33.
Background: Buried bumper syndrome (BBS) is a rare complication of percutaneous endoscopic gastrostomy (PEG). Along with the widespread use of the button‐type kit, BBS is encountered frequently. Methods: In the present study, we examined causes and treatments for BBS among 1400 patients who had undergone PEG. Results: The causes of BBS after PEG were classified into two categories: early causes consisted of wound infection, inappropriate size of kit and severe lordosis, while late causes were inappropriate exchange of kit, rough management or weight gain. The treatments for BBS could be determined by the degree of wound infection, fistula and burial of the bumper. Conclusion: We prepared a flowchart for replacement, by which BBS can be managed safely and quickly without surgical or endoscopic intervention.  相似文献   
34.
Renal cell carcinoma (RCC) causes many kinds of symptoms such as hypercalcemia, hypertension, polycythemia and fever. Here we describe a rare case of RCC presenting with a persistent cough. After radical nephrectomy, the obstinate cough disappeared. When the tumor recurred locally, the cough also recurred. Furthermore, the cough disappeared completely again after the removal of the recurrent tumor. Although all the clinical findings suggested that the RCC caused the cough, we could not identify a specific humoral substance responsible for the cough.  相似文献   
35.
Although the prevalence of a learned voiding dysfunction and non-neurogenic neurogenic bladder (NNB), which is one type of dysfunctional elimination syndrome, is considered to be relatively rare, the association of NNB with Down syndrome (DS) has been elucidated in male patients. We herein describe the occurrence of NNB in an adult female with DS. The diagnosis was confirmed after completely ruling out any neurological or anatomical anomalies that could be related to a lower urinary tract dysfunction. She had renal dysfunction and multiple obstructive uropathies for which clean intermittent catheterization was successfully introduced.  相似文献   
36.
人工髋关节置换术后脂肪栓塞综合征的观察与护理   总被引:3,自引:0,他引:3  
曹萍  高海莲 《护理学报》2004,11(10):22-23
笔者报道人工髋关节置换术后脂肪栓塞综合征的护理措施认为重视氧饱和度及动脉血氧分压监测,注意观察中枢神经系统症状和呼吸系统症状,及时发现并纠止低氧血症,对不同的病人制定不同护理方案,严密观察病情,及时掌握病情变化:是护理的关键。  相似文献   
37.
Hyper-IgM syndrome with CHARGE association   总被引:1,自引:0,他引:1  
A girl with coloboma of the iris, sensorineural deafness, growth delay, distinctive face, and cranial nerve dysfunction was diagnosed of CHARGE association in the first year of life. She presented with repeated otitis. At 3 yr of age, the patient suffered a septicemia ( Streptococcus pneumoniae , Corynebacterium sp.). The immunoglobulin G (IgG) and IgA serum levels were decreased, IgM increased and cellular immunity parameters were normal, supporting the diagnosis of hyper-IgM (HIM) syndrome. The sequence of CD40 ligand and cytidine deaminase genes were normal. From then on, she was receiving immunoglobulin intravenously with an excellent outcome . Here, we report the first case of CHARGE association and HIM syndrome in the same patient. Although the cause could not be identified, a non-random link is likely.  相似文献   
38.
39.
Facial muscle spasms, which are rare in adults, present a particularly difficult entity for the optometrist to recognise. The condition may not even manifest itself at an eye examination and the optometrist may have to rely on subjective symptoms to assist in the recognition of the condition. It is important to diagnose the condition correctly as specific and effective treatment is available.  相似文献   
40.
胸部类癌   总被引:2,自引:0,他引:2  
本文报道了31例胸部类癌,其中胸腺类癌14例,支气管类癌17例,伴有异位ACTH综合征者17例。12例患者发生转移(39%),24例行原发肿瘤全部或部分切除,术后放疗或化疗或两者均有者17例,4例仅行探查并取活检,28例经手术及病理证实。  相似文献   
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