全文获取类型
收费全文 | 8027篇 |
免费 | 596篇 |
国内免费 | 48篇 |
专业分类
耳鼻咽喉 | 98篇 |
儿科学 | 380篇 |
妇产科学 | 144篇 |
基础医学 | 825篇 |
口腔科学 | 99篇 |
临床医学 | 815篇 |
内科学 | 1742篇 |
皮肤病学 | 230篇 |
神经病学 | 543篇 |
特种医学 | 578篇 |
外科学 | 1256篇 |
综合类 | 284篇 |
一般理论 | 3篇 |
预防医学 | 597篇 |
眼科学 | 163篇 |
药学 | 374篇 |
2篇 | |
中国医学 | 34篇 |
肿瘤学 | 504篇 |
出版年
2022年 | 64篇 |
2021年 | 114篇 |
2020年 | 91篇 |
2019年 | 76篇 |
2018年 | 109篇 |
2017年 | 83篇 |
2016年 | 102篇 |
2015年 | 134篇 |
2014年 | 145篇 |
2013年 | 237篇 |
2012年 | 314篇 |
2011年 | 291篇 |
2010年 | 214篇 |
2009年 | 243篇 |
2008年 | 292篇 |
2007年 | 341篇 |
2006年 | 331篇 |
2005年 | 284篇 |
2004年 | 280篇 |
2003年 | 252篇 |
2002年 | 214篇 |
2001年 | 219篇 |
2000年 | 208篇 |
1999年 | 187篇 |
1998年 | 152篇 |
1997年 | 130篇 |
1996年 | 120篇 |
1995年 | 109篇 |
1994年 | 79篇 |
1993年 | 89篇 |
1992年 | 163篇 |
1991年 | 151篇 |
1990年 | 144篇 |
1989年 | 172篇 |
1988年 | 190篇 |
1987年 | 180篇 |
1986年 | 175篇 |
1985年 | 192篇 |
1984年 | 116篇 |
1983年 | 123篇 |
1982年 | 61篇 |
1981年 | 56篇 |
1980年 | 64篇 |
1979年 | 108篇 |
1978年 | 79篇 |
1977年 | 81篇 |
1975年 | 59篇 |
1974年 | 57篇 |
1973年 | 73篇 |
1972年 | 63篇 |
排序方式: 共有8671条查询结果,搜索用时 15 毫秒
2.
3.
Dr. Arni Raghavendrarao Raghuram M.Ch. Subbiah Kumar MD Kathamuthu Balamurugan DA Arulmurugan DA Ramiah Krishnan M.Ch. Perichiappan Sivakami BS Eluvathingal Varghese John M.Ch. 《Indian Journal of Thoracic and Cardiovascular Surgery》2006,22(3):178-181
Background Beating heart surgery has now become the commonest technique of doing Coronary Artery Bypass Graft Surgery (CABG) in our country.
It is being used even in such high risk situations like diffuse coronary disease and Critical Left Main stem Stenosis (LMCS)
with good results. The aim of this study is to retrospectively review our results in Off-Pump Coronary Artery Bypass Surgery
(OPCAB) in patients with critical left main stem stenosis.
Methods This study is a retrospective analysis of the data of patients who underwent primary coronary artery bypass surgery. During
the period from April 2003 to September 2005 a total of 64 patients underwent OPCAB procedure for critical LMCS. During the
same period 10 patients underwent CABG on Cardio Pulmonary Bypass (CPB). The age range was 36–77yrs. The sex distribution
was M: F 53∶10. Ten patients were done as emergency. 2 of them were on Intra Aortic Balloon Pump (IABP) support preoperatively.
10 patients were high risk with a Euro score of ≥5.
Results Left Internal Mammary Artery (LIMA) was used in 78% of cases. Average grafts per patient was 2.96. The median ventilation
time was 5.91 hrs. New IABP insertion in postoperative period was required in 1 patient. One patient was reexplored for bleeding.
There was one perioperative myocardial infarction. 57% of patients did not need any blood transfusion. There was no conversion
to CPB. There was no operative mortality. Inotropes were used in ten cases.
Conclusions OPCAB is a safe method of revascularization in patients with critical LMCS. Preoperative IABP is useful in patients with cardiogenic
shock. However, there is a place for CPB in patients needing additional procedures like Mitral Valve repair (MV repair) or
Dor's procedure or when the vessels are very diffusely diseased. Those patients who are unstable despite IABP support may
be managed by Beating heart On Pump (BHOP) technique. 相似文献
4.
5.
6.
K A Rosenthal 《Dimensions of critical care nursing》1989,8(5):310-316
The information in this article is for a wide variety of nurses who find themselves in a teaching role: the critical care nurse orienting another nurse (experienced or new graduate); the critical care manager who needs to present an inservice program; and the educator or clinical specialist looking for a new way to present the same information. The author describes how self-paced modules for inservice education offer variety to learners since learners choose the teaching strategy that best suits their learning styles. 相似文献
7.
8.
Steven J Lobritto Philip Rosenthal Rene Bouw Mimi Leung Paul Snell Richard D Mamelok 《Liver transplantation》2007,13(11):1570-1575
There are few pharmacokinetic data for mycophenolate mofetil (MMF) when used in combination with cyclosporine (CsA) in pediatric liver transplant recipients. The aim of this study was to assess the pharmacokinetics of MMF in stable pediatric liver transplant patients and estimate the dose of MMF required to provide a mycophenolic acid (MPA) exposure similar to that observed in adult liver transplant recipients receiving the recommended dose of MMF (target area under the plasma concentration-time curve from 0 to 12 hours [AUC(0-12)] for MPA of 29 mug.hour/mL in the immediate posttransplantation period and 58 microg x hour/mL after 6 months). A 12-hour pharmacokinetic profile was collected for 8 pediatric patients (mean age 20.9 months) on stable doses of MMF and CsA who had received a liver transplant > or = 6 months prior to entry and who had started on MMF within 2 weeks of transplantation. Mean MMF dosage was 285 mg/m(2) (range, 200-424 mg/m(2)). Of 8 patients, 7 had a MPA AUC(0-12) (range, 11.0-37.2 microg x hour/mL) well below the target. One patient had an AUC(0-12) > or = 58 microg x hour/mL but was considered an outlier and was excluded from analyses. Mean MPA AUC(0-12) and maximum plasma concentration values were 22.7 +/- 10.5 microg x hour/mL and 7.23 +/- 3.27 microg/mL, respectively; values normalized to 600 mg/m(2) (the approved pediatric dose in renal transplantation) were 47.0 +/- 21.8 microg x hour/mL and 14.5 +/- 4.21 microg/mL. In conclusion, assuming that MPA exhibits linear pharmacokinetics, when used in combination with CsA, a MMF dose of 740 mg/m(2) twice daily would be recommended in pediatric liver transplant recipients to achieve MPA exposures similar to those observed in adult liver transplant recipients. This finding should be confirmed by a prospective trial. 相似文献
9.
Dr. S. K. Rosenthal 《Archives of dermatological research》1930,162(1):95-101
Ohne ZusammenfassungMit 1 Textabbildung.Vorgetragen mit Demonstration von Kulturen in der dermatologischen Sektion der wissenschaftlichen medizinischen Association in Minsk am 5. I. 1930. 相似文献
10.