全文获取类型
收费全文 | 5862篇 |
免费 | 519篇 |
国内免费 | 48篇 |
专业分类
耳鼻咽喉 | 48篇 |
儿科学 | 196篇 |
妇产科学 | 110篇 |
基础医学 | 794篇 |
口腔科学 | 111篇 |
临床医学 | 689篇 |
内科学 | 972篇 |
皮肤病学 | 132篇 |
神经病学 | 339篇 |
特种医学 | 504篇 |
外科学 | 828篇 |
综合类 | 313篇 |
一般理论 | 3篇 |
预防医学 | 467篇 |
眼科学 | 145篇 |
药学 | 484篇 |
2篇 | |
中国医学 | 35篇 |
肿瘤学 | 257篇 |
出版年
2022年 | 52篇 |
2021年 | 86篇 |
2020年 | 59篇 |
2019年 | 65篇 |
2018年 | 94篇 |
2017年 | 74篇 |
2016年 | 66篇 |
2015年 | 108篇 |
2014年 | 141篇 |
2013年 | 197篇 |
2012年 | 270篇 |
2011年 | 277篇 |
2010年 | 207篇 |
2009年 | 206篇 |
2008年 | 231篇 |
2007年 | 257篇 |
2006年 | 228篇 |
2005年 | 195篇 |
2004年 | 209篇 |
2003年 | 184篇 |
2002年 | 173篇 |
2001年 | 166篇 |
2000年 | 143篇 |
1999年 | 138篇 |
1998年 | 153篇 |
1997年 | 114篇 |
1996年 | 104篇 |
1995年 | 108篇 |
1994年 | 76篇 |
1993年 | 80篇 |
1992年 | 108篇 |
1991年 | 107篇 |
1990年 | 100篇 |
1989年 | 103篇 |
1988年 | 127篇 |
1987年 | 127篇 |
1986年 | 105篇 |
1985年 | 85篇 |
1984年 | 74篇 |
1983年 | 74篇 |
1982年 | 45篇 |
1981年 | 41篇 |
1979年 | 59篇 |
1978年 | 51篇 |
1977年 | 43篇 |
1975年 | 36篇 |
1972年 | 54篇 |
1971年 | 42篇 |
1955年 | 42篇 |
1954年 | 35篇 |
排序方式: 共有6429条查询结果,搜索用时 15 毫秒
951.
952.
953.
954.
955.
956.
957.
958.
959.
960.
Surgical management of ventricular septal defects and mitral regurgitation complicating acute myocardial infarction 总被引:3,自引:0,他引:3
M J Buckley E D Mundth W M Daggett H K Gold R C Leinbach W G Austen 《The Annals of thoracic surgery》1973,16(6):598-609
Sixteen patients were studied subsequent to the development of acute ventricular septal rupture in 7 and severe mitral regurgitation in 9. These lesions occurred within two weeks of acute myocardial infarctions. Intraaortic balloon assistance was initiated when cardiovascular deterioration occurred, and hemodynamic improvement was obtained in all patients. Shunting through a ventricular septal perforation was reduced during balloon assistance, and mitral regurgitation, when present, was decreased. These effects were short-lived, and the patients were subsequently studied with coronary angiography and ventriculography.Two of 3 patients with anterior ventricular septal defect underwent successful surgical correction. Three patients had attempted closure of inferior ventricular septal defect without success. The fourth patient with an inferior ventricular septal defect died of his lesion without any attempt at surgical repair.Four patients with rupture of the papillary muscle were long-term surgical survivors. Coronary artery bypass grafting was carried out when indicated in these patients. Two of 5 patients with papillary muscle dysfunction who underwent operation during the acute period of their infarction were long-term survivors.The findings suggest that the mechanical lesions of mitral regurgitation and ventricular septal perforation are amenable to surgical intervention if a sufficient amount of residual functional muscle can be preserved in the left ventricle. Intraaortic balloon assistance allows a period of time to stabilize the condition of patients with these lesions, to reduce myocardial ischemia, and to carry out studies to determine the degree of associated coronary artery disease and the extent of irreversible myocardial damage. Based on the findings from these studies, surgical procedures may be selected. 相似文献