全文获取类型
收费全文 | 29801篇 |
免费 | 2310篇 |
国内免费 | 718篇 |
专业分类
耳鼻咽喉 | 32篇 |
儿科学 | 631篇 |
妇产科学 | 777篇 |
基础医学 | 1882篇 |
口腔科学 | 34篇 |
临床医学 | 5250篇 |
内科学 | 9692篇 |
皮肤病学 | 58篇 |
神经病学 | 487篇 |
特种医学 | 1611篇 |
外国民族医学 | 4篇 |
外科学 | 4291篇 |
综合类 | 3877篇 |
现状与发展 | 1篇 |
一般理论 | 1篇 |
预防医学 | 796篇 |
眼科学 | 181篇 |
药学 | 2148篇 |
23篇 | |
中国医学 | 663篇 |
肿瘤学 | 390篇 |
出版年
2024年 | 60篇 |
2023年 | 593篇 |
2022年 | 914篇 |
2021年 | 1342篇 |
2020年 | 1425篇 |
2019年 | 1344篇 |
2018年 | 1277篇 |
2017年 | 1019篇 |
2016年 | 947篇 |
2015年 | 1074篇 |
2014年 | 1946篇 |
2013年 | 2251篇 |
2012年 | 1461篇 |
2011年 | 1580篇 |
2010年 | 1257篇 |
2009年 | 1324篇 |
2008年 | 1276篇 |
2007年 | 1243篇 |
2006年 | 1169篇 |
2005年 | 1082篇 |
2004年 | 869篇 |
2003年 | 760篇 |
2002年 | 624篇 |
2001年 | 623篇 |
2000年 | 428篇 |
1999年 | 508篇 |
1998年 | 435篇 |
1997年 | 436篇 |
1996年 | 345篇 |
1995年 | 345篇 |
1994年 | 337篇 |
1993年 | 270篇 |
1992年 | 267篇 |
1991年 | 255篇 |
1990年 | 207篇 |
1989年 | 152篇 |
1988年 | 155篇 |
1987年 | 158篇 |
1986年 | 135篇 |
1985年 | 167篇 |
1984年 | 157篇 |
1983年 | 117篇 |
1982年 | 81篇 |
1981年 | 102篇 |
1980年 | 75篇 |
1979年 | 51篇 |
1978年 | 47篇 |
1977年 | 45篇 |
1976年 | 37篇 |
1975年 | 18篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
The purpose of this study is to show a very rare complication of acute cocaine poisoning, namely heart rupture. In the present case report, acute cocaine intoxication caused massive myocardial infarction, resulting in heart rupture and cardiac tamponade. A crime scene investigation found a dead body on the street in a drug dealing district. Examination of the body showed no external injuries. A thorough autopsy was performed showing massive cardiac tamponade with 510 ml of blood within the pericardium and full-thickness tissue lesion at the posterior wall of the left ventricle of 3.5 × 3 cm. Histological examination in hematoxylin and eosin was performed and confirmed the interruption of the posterior wall of the left ventricle with the presence of blood. In fact, although the correlation between cocaine and myocardial damage is well established, the relationship between heart rupture and acute cocaine intoxication is an extremely rare event. Moreover, since there are, to date, few reports of similar deaths, our report provides useful information regarding sudden death in a cocaine abuser. It is, therefore, of crucial importance to report this case to the scientific community. 相似文献
2.
3.
4.
《Archives of Cardiovascular Diseases》2022,115(10):505-513
Central illustration: cumulative major adverse cardiac events (MACE) and bioresorbable vascular scaffold (BVS) thrombosis rates after 1, 2, 3, 4 and 5 years. 相似文献
5.
6.
《Diagnostic and interventional imaging》2020,101(6):335-345
This article was designed to provide a pediatric cardiac computed tomography angiography (CCTA) expert panel consensus based on opinions of experts of the Société Française d’Imagerie Cardiaque et Vasculaire diagnostique et interventionnelle (SFICV) and of the Filiale de Cardiologie Pédiatrique Congénitale (FCPC). This expert panel consensus includes recommendations for indications, patient preparation, CTA radiation dose reduction techniques, and post-processing techniques. The consensus was based on data from available literature (original papers, reviews and guidelines) and on opinions of a group of specialists with extensive experience in the use of CT imaging in congenital heart disease. In order to reach high potential and avoid pitfalls, CCTA in children with congenital heart disease requires training and experience. Moreover, pediatric cardiac CCTA protocols should be standardized to acquire optimal images in this population with the lowest radiation dose possible to prevent unnecessary radiation exposure. We also provided a suggested structured report and a list of acquisition protocols and technical parameters in relation to specific vendors. 相似文献
7.
8.
9.
10.
Moises Rodriguez-Gonzalez Antonio Moruno Tirado Reza Hosseinpour Jose Santos de Soto 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2015,42(4):350-356
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital condition. It responds well to early diagnosis and treatment, but otherwise the prognosis is poor. We present our case series of 12 patients (mean age, 2 ± 2.58 yr; age range, 2 mo–8 yr), emphasizing the diagnostic process and discussing our surgical results. The diagnosis of ALCAPA should be suspected in infants who have dilated cardiomyopathy with electrocardiographic changes that suggest ischemia, and in older children who have isolated mitral regurgitation. When clinical suspicion is high, the results of 2-dimensional echocardiography combined with color-flow Doppler studies in expert hands can establish the diagnosis, thus avoiding angiography in critically ill infants. The treatment of choice in our patients was transfer and reimplantation of the left coronary artery onto the ascending aorta. There were 2 deaths: both were infants in extremis who underwent emergency surgery. An older child with severe ventricular dysfunction was given mechanical ventricular assistance and then heart transplantation. As of this report, all 10 survivors remained well and asymptomatic. 相似文献