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   257篇
  免费   12篇
  国内免费   1篇
耳鼻咽喉   10篇
儿科学   18篇
妇产科学   8篇
基础医学   16篇
临床医学   13篇
内科学   59篇
皮肤病学   1篇
神经病学   14篇
特种医学   9篇
外科学   43篇
综合类   6篇
一般理论   2篇
预防医学   61篇
药学   5篇
中国医学   1篇
肿瘤学   4篇
  2024年   1篇
  2023年   1篇
  2022年   1篇
  2021年   4篇
  2020年   1篇
  2019年   2篇
  2018年   5篇
  2016年   1篇
  2015年   3篇
  2013年   4篇
  2012年   12篇
  2011年   26篇
  2010年   5篇
  2009年   10篇
  2008年   27篇
  2007年   16篇
  2006年   8篇
  2005年   12篇
  2004年   20篇
  2003年   29篇
  2002年   17篇
  2001年   17篇
  2000年   6篇
  1999年   1篇
  1998年   7篇
  1997年   2篇
  1996年   2篇
  1990年   3篇
  1989年   3篇
  1988年   3篇
  1987年   1篇
  1986年   3篇
  1985年   1篇
  1982年   2篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1974年   2篇
  1973年   4篇
  1971年   3篇
  1970年   1篇
排序方式: 共有270条查询结果,搜索用时 15 毫秒
1.
BACKGROUND: Eosinophilic airways inflammation forms the pathophysiologic basis for a proportion of children at risk of developing recurrent wheezing. Early preventive measures and/or anti-inflammatory treatment may be guided by the identification of such children. We aimed to study the relationship between respiratory symptoms and indirect markers of airway inflammation. METHODS: We measured eosinophil protein X (EPX) and leukotriene E(4) (LTE(4)) in urine, as well as eosinophil cationic protein (ECP) in nasal lavages, in a random sample of 1-year-old children with a family history of atopy who participated in an international multicenter study on the prevention of allergy in Europe. For urine analyses, 10 children with upper respiratory illness and 19 healthy children without a family history of atopy were also enrolled. Endogenous urinary LTE(4) was separated by HPLC and determined by enzyme immunoassay with a specific antibody. The concentrations of nasal ECP and urinary EPX were determined by RIA analysis. RESULTS: One hundred and ten children (mean age: 1.05+/-0.1 years) were enrolled. Prolonged coughing during the first year of life was reported in 29 children, wheezy breathing in 17 children, and dry skin in 33 children. A doctor's diagnosis of wheezy bronchitis was given to 17 children. Sensitization to dust mites (specific IgE > or =1.43 ML/units) was detected in two children. Children with a doctor's diagnosis of atopic dermatitis within the first 12 months of life (n=6) had significantly higher urinary EPX than children without this (66.7 vs 30.1 microg/mmol creatinine, P=0.01). Urinary excretion of EPX and LTE4 showed a weak correlation (r=0.22, P=0.02). There were no significant differences in urinary excretion of EPX and LTE(4) or nasal ECP between children with and without respiratory symptoms (P>0.1). CONCLUSIONS: At the age of 1 year, urinary EPX is increased in children with atopic dermatitis. With regard to respiratory symptoms, urinary and nasal inflammatory parameters are not helpful in characterizing the phenotype of a single patient.  相似文献   
2.
3.
奥斯医院分院坐落在玛斯努娜河畔,是AZ医疗集团下属的妇儿医疗中心。2002年至2003年,威尔马科建筑工程设计研究所对其实施了全面的建筑改扩建工程,使其成为现代化的保健诊治双功能的医疗中心。  相似文献   
4.
Use of Resuscitative endovascular balloon occlusion of the aorta (REBOA) for control of non-compressible hemorrhage is a re-emerging technology that historically is employed by surgeons. We present a case in which REBOA was successfully placed by an emergency physician in a critical mass casualty patient awaiting transfer to the operating table. This case is an example in which emergency physicians, in collaboration with the surgeon, can utilize REBOA to temporize non-compressible hemorrhage when a surgeon is not immediately available.  相似文献   
5.
BACKGROUND: To assess the impact of immediate versus delayed antihypertensive treatment on the outcome of older patients with isolated systolic hypertension, we extended the double-blind placebo-controlled Systolic Hypertension in Europe (Syst-Eur) trial by an open-label follow-up study lasting 4 years. METHODS: The Syst-Eur trial included 4695 randomized patients with minimum age of 60 years and an untreated blood pressure of 160-219 mmHg systolic and below 95 mmHg diastolic. The double-blind trial ended after a median follow-up of 2.0 years (range 1-97 months). Of 4409 patients still alive, 3517 received open-label treatment consisting of nitrendipine (10-40 mg daily) with the possible addition of enalapril (5-20 mg daily), hydrochlorothiazide (12.5-25 mg daily), or both add-on drugs. Non-participants (n = 892) were also followed up. RESULTS: Median follow-up increased to 6.1 years. Systolic pressure decreased to below 150 mmHg (target level) in 2628 participants (75.0%). During the 4-year open-label follow-up, stroke and cardiovascular complications occurred at similar frequencies in patients formerly randomized to placebo and those continuing active treatment. These rates were similar to those previously observed in the active-treatment group during the double-blind trial. Considering the total follow-up of 4695 randomized patients, immediate compared with delayed antihypertensive treatment reduced the occurrence of stroke and cardiovascular complications by 28% (P = 0.01) and 15% (P = 0.03), respectively, with a similar tendency for total mortality (13%, P = 0.09). In 492 diabetic patients, the corresponding estimates of long-term benefit (P < 0.02) were 60, 51 and 38%, respectively. CONCLUSIONS: Antihypertensive treatment can achieve blood pressure control in most older patients with isolated systolic hypertension. Immediate compared with delayed treatment prevented 17 strokes or 25 major cardiovascular events per 1000 patients followed up for 6 years. These findings underscore the necessity of early treatment of isolated systolic hypertension.  相似文献   
6.
The aim of this survey, which was part of an English-French project supported by the Commission of the European Communities, was to compare access to HIV post-exposure prophylaxis (PEP) in the occupational and non-occupational contexts in 27 European countries. A protocol was designed in May 1998 in collaboration with all country consultants. Data were collected at country level by each consultant through interviews, review of local and national recommendations and results of national or local surveys. The final comparative analysis was carried out from the individual country reports and a review of the literature. The large majority of European countries have detailed procedures regarding occupational PEP: 20/27 have produced national guidelines, three have adopted the US CDC recommendations and only four have no official recommendations. Although no standard protocol exists, the more common one is a four-week implementation of a triple combination therapy. In the context of non-occupational exposure to HIV, only five countries have guidelines with specific recommendations and one country has adopted the CDC recommendations. In the majority of cases (13 countries), PEP is never recommended but is only available in a few circumstances, sometimes with major limitations. In the last eight countries, such PEP is not currently available. Although the estimations of HIV transmission risks in occupational and non-occupational contexts are really comparables, easy access to PEP after accidental sexual or blood exposures is not guaranteed for the general population in the majority of European countries.  相似文献   
7.
Sensitization to one or more non-specific lipid transfer proteins (nsLTPs), initially thought to exist mainly in southern Europe, is becoming accepted as a cause of allergic reactions to plant foods across Europe and beyond. The peach nsLTP allergen Pru p 3 is a dominant sensitizing allergen and peaches a common food trigger, although multiple foods can be involved. A frequent feature of reactions is the requirement for a cofactor (exercise, alcohol, non-steroidal anti-inflammatory drugs, Cannabis sativa) to be present for a food to elicit a reaction. The variability in the food and cofactor triggers makes it essential to include an allergy-focused diet and clinical history in the diagnostic workup. Testing on suspected food triggers should also establish whether sensitization to nsLTP is present, using purified or recombinant nsLTP allergens such as Pru p 3. The avoidance of known trigger foods and advice on cofactors is currently the main management for this condition. Studies on immunotherapy are promising, but it is unknown whether such treatments will be useful in populations where Pru p 3 is not the primary sensitizing allergen. Future research should focus on the mechanisms of cofactors, improving diagnostic accuracy and establishing the efficacy of immunotherapy.  相似文献   
8.
9.
目的观察经桡动脉入路行急诊ST段抬高急性心肌梗死直接经皮冠状动脉介入(PCI)治疗的有效性和安全性。方法选择沈阳军区总医院2005年1月至2006年10月连续607例ST段抬高性急性心肌梗死(STEMI)住院患者,分别接受经桡动脉入路(273例)或经股动脉入路(334例)途径行PCI治疗,观察两组手术成功率和并发症发生率。结果两组患者PCI成功率差异无统计学意义(97.07%对95.81%,P>0.05)。经桡动脉入路组局部血肿、假性动脉瘤、迷走反射发生率显著低于经股动脉入路组。结论行PCI治疗的STEMI患者经桡动脉入路途径是安全、有效和可行的方法,与经股动脉比较,经桡动脉途径可减少并发症的发生。  相似文献   
10.
医院环境空间的细部设计,是满足临床医学对医疗环境的要求。在国外的医院改扩建工程中,有相当一部分医院进行内部空间的改造(建筑结构不进行拆建)。利用优化整合的装饰装修方法,将原有的医院建筑实施整体内部空间改造,采用弧线分割的设计手法,按照临床医学的要求,对医院内部环境的平面布局进行重新布置。在装饰装修工程中,充分利用室内弧线和角的变化与结合,巧妙地将医疗空间功能需求和人体工学相结合,满足现代临床医学新技术的要求。  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