全文获取类型
收费全文 | 189篇 |
免费 | 6篇 |
国内免费 | 3篇 |
专业分类
儿科学 | 2篇 |
妇产科学 | 10篇 |
基础医学 | 16篇 |
口腔科学 | 1篇 |
临床医学 | 19篇 |
内科学 | 54篇 |
神经病学 | 10篇 |
特种医学 | 4篇 |
外科学 | 59篇 |
预防医学 | 9篇 |
药学 | 6篇 |
肿瘤学 | 8篇 |
出版年
2022年 | 3篇 |
2021年 | 9篇 |
2020年 | 3篇 |
2018年 | 4篇 |
2017年 | 4篇 |
2016年 | 1篇 |
2015年 | 2篇 |
2014年 | 4篇 |
2013年 | 11篇 |
2012年 | 4篇 |
2011年 | 9篇 |
2010年 | 6篇 |
2009年 | 1篇 |
2008年 | 11篇 |
2007年 | 5篇 |
2006年 | 6篇 |
2005年 | 10篇 |
2004年 | 6篇 |
2003年 | 7篇 |
2002年 | 4篇 |
2001年 | 7篇 |
2000年 | 11篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1997年 | 3篇 |
1995年 | 1篇 |
1993年 | 1篇 |
1992年 | 4篇 |
1991年 | 6篇 |
1990年 | 5篇 |
1989年 | 1篇 |
1988年 | 5篇 |
1987年 | 3篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1984年 | 3篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1979年 | 5篇 |
1978年 | 3篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1970年 | 3篇 |
1968年 | 2篇 |
1967年 | 3篇 |
1966年 | 1篇 |
1965年 | 2篇 |
排序方式: 共有198条查询结果,搜索用时 0 毫秒
21.
M. Caselli A. Zullo G. Maconi F. Parente V. Alvisi T. Casetti D. Sorrentino G. Gasbarrini the Working Group of the Cervia II Meeting 《Digestive and liver disease》2007,39(8):782-789
Proper management of Helicobacter pylori infection in clinical practice--when supported by evidence-based data--is expected to produce substantial cost-efficacy advantages. This consideration has prompted the Cervia Working Group to organise a meeting of experts to update the National Guidelines on the diagnosis and treatment of H. pylori infection in Italy. Recommendations in the new European Guidelines were considered in the National setting, here in the light of factors such as the incidence of gastric cancer and gastric lymphoma, the accessibility to different diagnostic tools, the prevalence of bacterial resistance against antibiotics, and the availability of different drugs. The main revisions in respect to the previous guidelines include H. pylori eradication in non-ulcer dyspepsia patients and in non-steroidal, anti-inflammatory drug users, as well as in patients with idiopathic thrombocytopenic purpura and iron deficiency anaemia. The stool antigen test is now accepted as a valid test for confirmation of H. pylori eradication following therapy. New therapeutic approaches have been recommended for both first- (sequential therapy) and second-line (levofloxacin-based) treatment in our country. 相似文献
22.
Gangliocytic paraganglioma is an uncommon and usually benign lesion although some cases with metastasis to regional lymph nodes have been described. It is usually located in the descending duodenum submucosa and more frequently arises in male patients. It comes to clinical attention for discomfort, gastrointestinal bleeding, incidental finding and rarely for obstructive jaundice when it involves the papilla. Even if its histologic and immunocytochemical features have been thoroughly described, its histogenesis is still debated although hyperplastic and amartoma-choristoma theories are well considered. We report a case of duodenal gangliocytic paraganglioma in 46 years old chronic alcoholic man who underwent previous upper endoscopy for discomfort without diagnosing the lesion. This one was observed during a second upper endoscopy that was made for hemathemesis. But it was only after an episode of melena that a third upper endoscopy showed the paraganglioma that still kept hemorrhage stigmata and no other lesions. We describe this case of duodenal gangliocytic paraganglioma with review of the literature. 相似文献
23.
Ultrastructural morphology of the bacterial bodies was studied in 40 Helicobacter pylori positive cases. Two bacterial patterns were identified, which were associated with different modes of contact with the epithelial cells and possibly with different stages of the natural history of the infection. 相似文献
24.
Helicobacter pylori and chronic bronchitis. 总被引:7,自引:0,他引:7
M Caselli E Zaffoni M Ruina S Sartori L Trevisani A Ciaccia V Alvisi L Fabbri A Papi 《Scandinavian journal of gastroenterology》1999,34(8):828-830
BACKGROUND: Chronic infections such as those caused by Helicobacter pylori, Chlamydia pneumoniae, and cytomegalovirus have been epidemiologically related to coronary heart disease (CHD). Other studies place H. pylori in relation to other extradigestive diseases. We carried out an epidemiologic pilot study to evaluate the prevalence of H. pylori in patients with chronic bronchitis, a respiratory disease characterized by persistent chronic inflammation, in comparison with a matched control group. METHODS: An enzyme-linked immunosorbent assay IgG test for H. pylori diagnosis was performed in 60 consecutive patients with chronic bronchitis (15 women and 45 men; age range, 50-89 years; mean age, 70.38 years) and in 69 control subjects, well matched for age and social status (19 women and 50 men: age range, 52-90 years; mean age, 71.3 years). RESULTS: Foty-nine of 60 patients with chronic bronchitis (81.6%) and 40 of 69 subjects in the control group (57.9%) were H. pylori-positive (P = 0.0079). The odds ratio, calculated by simple analysis (3.2) and confirmed by logistic regression analysis (3.399), indicated that H. pylori infection greatly increases the risk of chronic bronchitis. CONCLUSIONS: To date, CHD is the only convincing association between H. pylori infection and an extradigestive disease. The main conclusion of this pilot study is that H. pylori infection seems to increase the risk of developing of chronic bronchitis. An important step in this field will be to evaluate the possible change in the clinical conditions after successful eradication therapy in H. pylori-positive patients with chronic bronchitis. 相似文献
25.
26.
A case of left extracranial internal carotid artery occlusion, associated with ipsilateral parietal glioblastoma, is reported. The clinical and radiological aspects are discussed. The Authors stress the usefulness of a complete investigation in patients with symptoms of cerebrovascular insufficiency. 相似文献
27.
28.
29.
M Capuzzo M L Nepoti M R Rossi M Verri S Tosatti R Alvisi G Gritti 《Minerva anestesiologica》1990,56(3):49-55
Bacterial examinations performed in two periods (Nov. 1985-Feb. 1986) and Nov. 1988-Feb. 1989) on materials taken from patients admitted into two similar Intensive Care Units (ICU) of the same hospital were evaluated. Excluding oropharyngeal swab cultures, which were performed only in the second period, Gram positive bacteria were 45.3% in 1985-1986 and 62.3% in 1988-1989 and Gram negative fell from 41.9% to 29%. The percentage of fungi remained unchanged. Microorganisms did not grow in 33.3% of tracheal aspirate specimens in 1985-1986 and in 54.3% in 1988-1989, probably depending on the larger number of patients with decompensated chronic respiratory failure treated in the second period. Usually the microorganisms found in the trachea was also in the oropharynx; Gram negative were only 5.1% of the microorganism collected in the oropharinx. The authors emphasize the increase of Gram positive bacteria in ICUs and suggest that the low rate of pneumonia observed in this study depends mostly on the good neurologic state of their patients. 相似文献
30.