全文获取类型
收费全文 | 625篇 |
免费 | 48篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 16篇 |
妇产科学 | 12篇 |
基础医学 | 54篇 |
口腔科学 | 30篇 |
临床医学 | 35篇 |
内科学 | 112篇 |
皮肤病学 | 10篇 |
神经病学 | 92篇 |
特种医学 | 20篇 |
外科学 | 108篇 |
综合类 | 17篇 |
预防医学 | 31篇 |
眼科学 | 25篇 |
药学 | 43篇 |
中国医学 | 3篇 |
肿瘤学 | 62篇 |
出版年
2024年 | 3篇 |
2023年 | 8篇 |
2022年 | 22篇 |
2021年 | 26篇 |
2020年 | 14篇 |
2019年 | 33篇 |
2018年 | 38篇 |
2017年 | 14篇 |
2016年 | 33篇 |
2015年 | 30篇 |
2014年 | 39篇 |
2013年 | 31篇 |
2012年 | 70篇 |
2011年 | 70篇 |
2010年 | 41篇 |
2009年 | 22篇 |
2008年 | 42篇 |
2007年 | 34篇 |
2006年 | 22篇 |
2005年 | 21篇 |
2004年 | 16篇 |
2003年 | 19篇 |
2002年 | 16篇 |
2001年 | 4篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1981年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有674条查询结果,搜索用时 0 毫秒
101.
Lung transplantation is an established treatment option that can improve quality of life and prolong survival for select patients diagnosed with end-stage lung disease. Given the gaps in organ donation and failures to make effective use of available organs, careful selection of candidates for lung transplant remains one of the most important considerations of the transplant community. Toward this end, we briefly reviewed recent trends in pretransplant evaluation, candidate selection, organ allocation, and organ preservation techniques. Since the latest consensus statement regarding appropriate selection of lung transplant candidates, many advances in the science and practice of lung transplantation have emerged and influenced our perspective of ‘contraindications’ to transplant. These advances have made it increasingly possible to pursue lung transplant in patients with risk factors for decreased survival—namely, older recipient age, increased body mass index, previous chest surgery, poorer nutritional status, and presence of chronic infection, cardiovascular disease, or extrapulmonary comorbid conditions. Therefore, we reviewed the updated evidence demonstrating the prognostic impact of these risk factors in lung transplant recipients. Lastly, we reviewed the salient evidence for current trends in disease-specific indications for lung transplantation, such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, cystic fibrosis, emphysema due to alpha-1 antitrypsin deficiency, and pulmonary arterial hypertension, among other less common end-stage diseases. Overall, lung transplant remains an exciting field with considerable hope for patients as they experience remarkable improvements in quality of life and survival in the modern era. 相似文献
102.
Context A lack of awareness about entitled health and social services may contribute to poor delivery of such services in developing countries, especially among individuals of low socioeconomic status. Objective To determine the impact of informing resource-poor rural populations about entitled services. Design, Setting, and Participants Community-based, cluster randomized controlled trial conducted from May 2004 to May 2005 in 105 randomly selected village clusters in Uttar Pradesh state in India. Households (548 intervention and 497 control) were selected by a systematic sampling design, including both low-caste and mid- to high-caste households. Intervention Four to 6 public meetings were held in each intervention village cluster to disseminate information on entitled health services, entitled education services, and village governance requirements. No intervention took place in control village clusters. Main Outcome Measures Visits by nurse midwife; prenatal examinations, tetanus vaccinations, and prenatal supplements received by pregnant women; vaccinations received by infants; excess school fees charged; occurrence of village council meetings; and development work in villages. Results At baseline, there were no significant differences in self-reported delivery of health and social services. After 1 year, intervention villagers reported better delivery of several services compared with control villagers: in a multivariate analysis, 30% more prenatal examinations (95% confidence interval [CI], 17%-43%; P < .001), 27% more tetanus vaccinations (95% CI, 12%-41%; P < .001), 24% more prenatal supplements (95% CI, 8%-39%; P = .003), 25% more infant vaccinations (95% CI, 8%-42%; P = .004), and decreased excess school fees of 8 rupees (95% CI, 4-13 rupees; P < .001). In a difference-in-differences analysis, 21% more village council meetings were reported (95% CI, 5%-36%; P = .01). There were no improvements in visits by a nurse midwife or in development work in the villages. Both low-caste and mid- to high-caste intervention households reported significant improvements in service delivery. Conclusions Informing resource-poor rural populations in India about entitled services enhanced the delivery of health and social services among both low- and mid- to high-caste households. Interventions that emphasize educating resource-poor populations about entitled services may improve the delivery of such services. Trial Registration clinicaltrials.gov Identifier: NCT00421291 相似文献
103.
M. R. Srinivas K. M. Adarsh Riya Jeeson C. Ashwini B. R. Nagaraj 《Japanese journal of radiology》2016,34(3):181-193
Congenital renal parenchymal and pelvicalyceal abnormalities have a wide spectrum. Most of them are asymptomatic, like that of ectopia, cross fused kidney, horseshoe kidney, etc., while a few of them become complicated, leading to renal failure and death. It is very important for the radiologist to identify these anatomic variants and guide the clinicians for surgical and therapeutic procedures. Cross-sectional imaging with a volume rendered technique/maximum intensity projection has overcome ultrasonography and IVU for identification and interpretation of some of these variants. 相似文献
104.
105.
Navdeep Saini Ashwini Malhotra Sanjay Chhabra Sunny Chhabra 《Indian Journal of Critical Care Medicine》2015,19(3):183-185
Methylmalonic acidemia (MMA) is most common inherited type of organic acidemia. It has diverse presentation in older infants without any initial apparent symptoms. MMA sometimes present with sudden metabolic decompensation, which may mimics common emergencies like septic shock and diabetic ketoacidosis (DKA) without early recognition can be fatal. In born error of metabolism especially organic acidemia should be suspected in any infant presented with severe high anion gap metabolic acidosis. We report two cases of MMA in infants presented acutely mimicking DKA and septic shock. 相似文献
106.
107.
Lower Prefrontal and Hippocampal Volume and Diffusion Tensor Imaging Differences Reflect Structural and Functional Abnormalities in Abstinent Individuals with Alcohol Use Disorder 下载免费PDF全文
108.
Devesh Misra Ceri Elbourne Anastasia Vareli Debasish Banerjee Ashwini Joshi Florian Friedmacher Clare Skerritt 《Journal of pediatric surgery》2019,54(10):2125-2129
BackgroundThere are only a few publications in the medical literature reporting on complication rates in proximal hypospadias surgery, particularly with regard to long-term follow-up.MethodsOver a 17.5-year period, we operated 100 patients with penoscrotal, scrotal and perineal hypospadias. Sixty-four had a single-stage repair, including 15 who received a buccal mucosa inlay “Snodgraft” repair. Thirty-six had a two-stage Bracka repair of which 19 received buccal or lower lip grafts and 17 had preputial grafts. Overall, 34 patients received buccal grafts. The median follow-up was eight years (range 1–16 years). Three patients were operated for residual chordee years later.ResultsUrethral fistulae occurred in a total of 26/100 (26.0%) cases, meatal stenosis in 16/100 (16.0%), wound breakdown in six (6.0%) and graft failure in one (1.0%). The fistula rate after the single-stage approach was 15/64 (23.4%), whereas it was 11/36 (30.6%) following two-stage repair (P = 0.4811).ConclusionsProximal hypospadias remains a challenging condition to treat. It is possible to perform a single-stage repair in 64.0% of cases. This brings down the median number of operations to only two. Lower lip grafts were used in 34.0% but are now used in redo-surgeries only. Our fistula rate was 26.0% but has decreased significantly in recent years.Level of evidenceLevel III. 相似文献
109.
110.