全文获取类型
收费全文 | 4448篇 |
免费 | 185篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 81篇 |
儿科学 | 400篇 |
妇产科学 | 129篇 |
基础医学 | 363篇 |
口腔科学 | 49篇 |
临床医学 | 283篇 |
内科学 | 1061篇 |
皮肤病学 | 39篇 |
神经病学 | 199篇 |
特种医学 | 296篇 |
外科学 | 693篇 |
综合类 | 66篇 |
一般理论 | 4篇 |
预防医学 | 117篇 |
眼科学 | 55篇 |
药学 | 315篇 |
1篇 | |
中国医学 | 27篇 |
肿瘤学 | 470篇 |
出版年
2025年 | 2篇 |
2024年 | 11篇 |
2023年 | 36篇 |
2022年 | 64篇 |
2021年 | 154篇 |
2020年 | 76篇 |
2019年 | 116篇 |
2018年 | 144篇 |
2017年 | 108篇 |
2016年 | 130篇 |
2015年 | 145篇 |
2014年 | 181篇 |
2013年 | 258篇 |
2012年 | 359篇 |
2011年 | 428篇 |
2010年 | 252篇 |
2009年 | 233篇 |
2008年 | 287篇 |
2007年 | 286篇 |
2006年 | 280篇 |
2005年 | 268篇 |
2004年 | 236篇 |
2003年 | 168篇 |
2002年 | 171篇 |
2001年 | 15篇 |
2000年 | 23篇 |
1999年 | 17篇 |
1998年 | 31篇 |
1997年 | 36篇 |
1996年 | 30篇 |
1995年 | 12篇 |
1994年 | 13篇 |
1993年 | 13篇 |
1992年 | 8篇 |
1991年 | 6篇 |
1990年 | 10篇 |
1989年 | 4篇 |
1988年 | 5篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1982年 | 1篇 |
1981年 | 8篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1978年 | 1篇 |
1976年 | 2篇 |
1972年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有4648条查询结果,搜索用时 15 毫秒
21.
Rakesh K. Gupta Rajesh Kumar Rohilla Kapil Sangwan Vijendra Singh Saurav Walia 《International orthopaedics》2010,34(8):1285-1290
Open reduction and internal fixation in distal tibial fractures jeopardises fracture fragment vascularity and often results
in soft tissue complications. Minimally invasive osteosynthesis, if possible, offers the best possible option as it permits
adequate fixation in a biological manner. Seventy-nine consecutive adult patients with distal tibial fractures, including
one patient with a bilateral fracture of the distal tibia, treated with locking plates, were retrospectively reviewed. The
4.5-mm limited-contact locking compression plate (LC-LCP) was used in 33 fractures, the metaphyseal LCP in 27 fractures and
the distal medial tibial LCP in the remaining 20 fractures. Fibula fixation was performed in the majority of comminuted fractures
(n = 41) to maintain the second column of the ankle so as to achieve indirect reduction and to prevent collapse of the fracture.
There were two cases of delayed wound breakdown in fractures fixed with the 4.5-mm LC-LCP. Five patients required primary
bone grafting and three patients required secondary bone grafting. All cases of delayed union (n = 7) and nonunion (n = 3) were observed in cases where plates were used in bridge mode. Minimally invasive plate osteosynthesis (MIPO) with LCP
was observed to be a reliable method of stabilisation for these fractures. Peri-operative docking of fracture ends may be
a good option in severely impacted fractures with gap. The precontoured distal medial tibial LCP was observed to be a better
tolerated implant in comparison to the 4.5-mm LC-LCP or metaphyseal LCP with respect to complications of soft tissues, bone
healing and functional outcome, though its contour needs to be modified. 相似文献
22.
Osseous involvement occurs in 5–10% of patients with disseminated cryptococcosis. We are reporting an unusual case of disseminated cryptococcosis involving the sternum and lumbar vertebra with the formation of psoas abscess with pulmonary tuberculosis. The patient presented with fever for 3 months. A diagnosis of pulmonary tuberculosis was made on thoracic contrast-enhanced computerized tomography and she was put on antituberculosis treatment. She was immunocompetent with negative human immunodeficiency virus. She conceived subsequently and had complaints of backache and swelling over the sternum. Magnetic resonance imaging showed destruction of L5 vertebra with psoas abscess. Vertebral cryptococcosis may mimic tuberculosis and malignancy. She had a bad obstetric history and experienced five, first-trimester spontaneous abortions in each successive year since 2001. This pregnancy again resulted in spontaneous abortion. Cryptococcus neoformans was isolated from two different sites: pus-involving the sternum and ultrasound-guided psoas abscess aspirate. Serum latex agglutination test for cryptococcal capsular polysaccharide antigen was positive. The diagnosis of cryptococcosis was delayed because the patient was diagnosed as a case of pulmonary tuberculosis, wherein clinical signs, symptoms and radiological findings in both the conditions are similar. Amphotericin B was started but she developed varicella infection and expired due to cardiac failure. 相似文献
23.
Sayar H Sharfuddin AA Taber TE Mehta R 《Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation》2011,9(5):336-339
The incidence of certain malignancies is significantly higher after organ transplant. However, there are rare reports of chronic myeloid leukemia in the posttransplant setting. The average reported interval between a transplant and the diagnosis of chronic myeloid leukemia is 44 months (range, 10- 96 mo). We report 2 patients with chronic myeloid leukemia within 1 year of a kidney transplant, which is significantly shorter than those previously reported. Both patients were receiving mycophenolate mofetil and tacrolimus for immunosuppression. They were treated with imatinib for chronic myeloid leukemia, and both patients demonstrated an isolated elevation of serum alkaline phosphatase that was directly correlated with imatinib. Despite a potential interaction between the 2 drugs, blood levels of tacrolimus and imatinib were not elevated during the course of treatment. Isolated elevation of alkaline phosphatase in this particular setting has not been reported previously. 相似文献
24.
Pankaj Kumar FRCS Nicholas Walcot FRCS Roger Carpenter FRCS Rakesh Uppal FRCS 《The Annals of thoracic surgery》2001,72(6):728-2141
Surgical management of patients with coexisting ischemic heart disease and pheochromocytoma remains challenging. We present one such case in which hybrid myocardial revascularization (angioplasty with stenting and off-pump coronary artery bypass grafting) and resection of pheochromocytoma were undertaken. Unusual features included simultaneous coronary artery surgery and tumor resection and, in particular, coronary artery surgery being performed without cardiopulmonary bypass. 相似文献
25.
Schaff HV Suri RM Enriquez-Sarano M 《Seminars in thoracic and cardiovascular surgery》2007,19(2):97-102
There has been great progress during the past decade in management of patients with mitral regurgitation. Doppler echocardiography allows accurate quantification of the degree of valve leakage and tracking of the effect of regurgitation on cardiac size and function. Natural history studies have clearly delineated the deleterious effects of severe, persistent mitral valve regurgitation including an increased risk of cardiac death as well as a predisposition to the development of congestive heart failure and atrial fibrillation. In virtually all of our analyses, short-term and long-term outcomes are improved in patients who have early surgical correction of severe mitral valve regurgitation. Moreover, there are clear benefits of mitral valve repair over valve replacement, including greater regression of left heart dimensions, normalization of left ventricular function, and superior long-term survival. 相似文献
26.
27.
28.
Handa R Kale R Upadhyay KK 《Asian journal of surgery / Asian Surgical Association》2004,27(3):241-242
Lymphangiomas are congenital malformations of the lymphatic system, and 90% have manifested by the end of the second year of life. While 75% of these are located in the cervical region, only 2% to 3% are associated with an intrathoracic extension. An isolated mediastinal lymphangioma without a cervical component is an uncommon occurrence. Presented here is an isolated mediastinal lymphangioma that herniated through the intercostal space to present as a cystic mass in the parasternal region, which has not been reported so far. 相似文献
29.
Thanos Athanasiou George Krasopoulos Pradeep Nambiar Tim Coats Mario Petrou Patrick Magee Rakesh Uppal 《European journal of cardio-thoracic surgery》2004,26(2):377-386
OBJECTIVE: The aim of this study is to investigate the influence of Emergency Thoracotomy (ET) on mortality in a group of patients suffering from severe thoracic trauma requiring Helicopter Emergency Medical Service (HEMS) transfer to hospital. This is not clearly defined especially when thoracotomy takes place in the pre-hospital setting. METHODS: A retrospective review of 670 consecutive patients with severe thoracic trauma, transferred to The Royal London Hospital by HEMS between November 1994 and December 2002. ET (on scene, in the Accident and Emergency (A&E) department or in the operating theatre) was performed in 53 patients (7.7%). Both univariate and multivariate analyses were performed to evaluate ET as an independent predictor of mortality. RESULTS: There were 510 males and 160 females with a mean Injury Severity Score (ISS) of 35.12+/-17.5. Univariate analysis identified ET to be a predictor of mortality (OR=0.15, 95% CI=0.07-0.30). However, with multivariate analysis, ET was not found to be an independent predictor of mortality (OR=1.93, 95% CI=0.61-6.1). The independent predictors of mortality identified were: age>60 years (OR 5.57, 95% CI 2.19-14.16), Glasgow Coma Score <8 at the scene (OR=7.4, 95% CI=3.15-17.46), ISS>25 (OR 5.3, 95% CI=1.64-17.11), need for intubation at the scene (OR=2.80, 95% CI=1.022-7.69), oxygen saturation in A&E (<89%) (OR=2.39, 95% CI=1.13-5.05), haemothorax (OR=3.30, 95% CI=1.53-7.13) and bilateral injury (OR=3.1, 95% CI=1.51-6.61). CONCLUSIONS: Our study has shown that when confounding variables are accounted for, ET is not a predictor of mortality following severe chest trauma. This implies that in a well-selected group of patients it may be a significant and life-saving procedure. 相似文献
30.
Leung Wai Sang S Chaturvedi RK Iqbal S Lachapelle K de Varennes B 《Journal of cardiac surgery》2012,27(4):408-414
Abstract Aim: The aim of this study was to determine the midterm functional quality of life in octogenarians after open valvular surgery. Methods: One hundred and eighty‐five consecutive patients above age 80 had valvular surgery with or without coronary artery bypass grafting (CABG). Using the Karnofsky Performance score and Barthel Index, patients were evaluated for functional autonomy, living disposition, and leisure activity by a single telephone interview. Subgroup analysis was performed on the 49 cases of isolated aortic valve replacement (AVR). Results: Mean age of octogenarians undergoing valvular surgery was 82.7 years (range 80 to 92 years). Actuarial survival at one and three years was 71% and 59%, respectively, for the entire group, compared to 84% and 71%, respectively, for isolated AVRs. After a mean follow‐up of 38 months there were 110 survivors (59.5%). Among survivors, 66% were autonomous, 26% semiautonomous, and 8% deemed dependent. Seventy‐two percent were living at home, 19% in a residence, and 9% in a supervised nursing facility. Over 90% of patients pursued leisure activities in the social, cognitive, and physical domains. Conclusions: Valvular surgery in high‐risk octogenarians, can be performed with acceptable mortality rates, and provide patients with functional autonomy and an excellent quality of life. (J Card Surg 2012;27:408‐414) 相似文献