全文获取类型
收费全文 | 3322篇 |
免费 | 324篇 |
国内免费 | 76篇 |
专业分类
耳鼻咽喉 | 78篇 |
儿科学 | 124篇 |
妇产科学 | 65篇 |
基础医学 | 352篇 |
口腔科学 | 50篇 |
临床医学 | 287篇 |
内科学 | 733篇 |
皮肤病学 | 255篇 |
神经病学 | 167篇 |
特种医学 | 174篇 |
外科学 | 522篇 |
综合类 | 210篇 |
一般理论 | 6篇 |
预防医学 | 186篇 |
眼科学 | 88篇 |
药学 | 182篇 |
中国医学 | 14篇 |
肿瘤学 | 229篇 |
出版年
2023年 | 44篇 |
2022年 | 19篇 |
2021年 | 102篇 |
2020年 | 84篇 |
2019年 | 93篇 |
2018年 | 102篇 |
2017年 | 77篇 |
2016年 | 99篇 |
2015年 | 103篇 |
2014年 | 114篇 |
2013年 | 134篇 |
2012年 | 174篇 |
2011年 | 217篇 |
2010年 | 101篇 |
2009年 | 112篇 |
2008年 | 142篇 |
2007年 | 201篇 |
2006年 | 185篇 |
2005年 | 147篇 |
2004年 | 137篇 |
2003年 | 134篇 |
2002年 | 128篇 |
2001年 | 102篇 |
2000年 | 106篇 |
1999年 | 103篇 |
1998年 | 42篇 |
1997年 | 42篇 |
1996年 | 43篇 |
1995年 | 32篇 |
1994年 | 46篇 |
1993年 | 49篇 |
1992年 | 59篇 |
1991年 | 53篇 |
1990年 | 43篇 |
1989年 | 46篇 |
1988年 | 42篇 |
1987年 | 54篇 |
1986年 | 41篇 |
1985年 | 37篇 |
1984年 | 25篇 |
1983年 | 15篇 |
1982年 | 13篇 |
1980年 | 6篇 |
1979年 | 15篇 |
1978年 | 10篇 |
1977年 | 5篇 |
1974年 | 7篇 |
1973年 | 8篇 |
1968年 | 4篇 |
1967年 | 6篇 |
排序方式: 共有3722条查询结果,搜索用时 15 毫秒
1.
2.
3.
INTRODUCTIONRecent studies reported that laparoscopic pancreatoduodenectomy (LPD) is associated with superior perioperative outcomes compared to the open approach. However, concerns have been raised about the safety of LPD, especially during the learning phase. Robotic pancreatoduodenectomy (RPD) has been reported to be associated with a shorter learning curve compared to LPD. We herein present our initial experience with RPD.METHODSA retrospective review of a single-institution prospective robotic hepatopancreaticobiliary (HPB) surgery database of 70 patients identified seven consecutive RPDs performed by a single surgeon in 2016–2017. These were matched at a 1:2 ratio with 14 open pancreatoduodenectomies (OPDs) selected from 77 consecutive pancreatoduodenectomies performed by the same surgeon between 2011 and 2017.RESULTSSeven patients underwent RPD, of which five were hybrid procedures with open reconstruction. There were no open conversions. Median operative time was 710.0 (range 560.0–930.0) minutes. Two major morbidities (> Grade 2) occurred: one gastrojejunostomy bleed requiring endoscopic haemostasis and one delayed gastric emptying requiring feeding tube placement. There were no pancreatic fistulas, reoperations or 90-day/in-hospital mortalities in the RPD group. Comparison between RPD and OPD demonstrated that RPD was associated with a significantly longer operative time. Compared to open surgery, there was no significant difference in estimated blood loss, blood transfusion, postoperative stay, pancreatic fistula rates, morbidity and mortality rates, R0 resection rates, and lymph node harvest rates.CONCLUSIONOur initial experience demonstrates that RPD is feasible and safe in selected patients. It can be safely adopted without any compromise in patient outcomes compared to the open approach. 相似文献
4.
5.
6.
Anne C.H. Goh Robert J. Lundstrom 《Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital》2015,42(5):479-482
Spontaneous coronary artery dissection is a rare cause of acute coronary syndrome. Clinical presentation ranges from chest pain alone to ST-segment-elevation myocardial infarction, ventricular fibrillation, and sudden death. The treatment of patients with spontaneous coronary artery dissection is challenging because the disease pathophysiology is unclear, optimal treatment is unknown, and short- and long-term prognostic data are minimal.We report the case of a 70-year-old woman who presented with an acute ST-segment-elevation myocardial infarction secondary to a spontaneous dissection of the left anterior descending coronary artery. She was treated conservatively. Cardiac tamponade developed 16 hours after presentation. Repeat coronary angiography revealed extension of the dissection. Medical therapy was continued after the hemopericardium was aspirated. The patient remained asymptomatic 3 years after hospital discharge. To our knowledge, this is the first reported case of spontaneous coronary artery dissection in association with cardiac tamponade that was treated conservatively and had a successful outcome. 相似文献
7.
8.
9.
Evelyn Xiu Ling Loo Hui Xing Lau Noor Hidayatul Aini Suaini Lydia Su Yin Wong Anne Eng Neo Goh Oon Hoe Teoh Hugo PS Van Bever Lynette Pei-chi Shek Bee Wah Lee Kok Hian Tan Keith M. Godfrey Johan Gunnar Eriksson Yap Seng Chong Elizabeth Huiwen Tham 《Pediatric allergy and immunology》2021,32(5):1096-1099
10.