全文获取类型
收费全文 | 8697篇 |
免费 | 490篇 |
国内免费 | 219篇 |
专业分类
耳鼻咽喉 | 66篇 |
儿科学 | 200篇 |
妇产科学 | 85篇 |
基础医学 | 524篇 |
口腔科学 | 75篇 |
临床医学 | 1118篇 |
内科学 | 1297篇 |
皮肤病学 | 276篇 |
神经病学 | 511篇 |
特种医学 | 691篇 |
外科学 | 1802篇 |
综合类 | 1092篇 |
预防医学 | 918篇 |
眼科学 | 92篇 |
药学 | 352篇 |
1篇 | |
中国医学 | 220篇 |
肿瘤学 | 86篇 |
出版年
2024年 | 8篇 |
2023年 | 201篇 |
2022年 | 385篇 |
2021年 | 570篇 |
2020年 | 431篇 |
2019年 | 453篇 |
2018年 | 469篇 |
2017年 | 333篇 |
2016年 | 342篇 |
2015年 | 320篇 |
2014年 | 576篇 |
2013年 | 624篇 |
2012年 | 431篇 |
2011年 | 499篇 |
2010年 | 433篇 |
2009年 | 421篇 |
2008年 | 388篇 |
2007年 | 402篇 |
2006年 | 329篇 |
2005年 | 292篇 |
2004年 | 281篇 |
2003年 | 220篇 |
2002年 | 187篇 |
2001年 | 155篇 |
2000年 | 118篇 |
1999年 | 79篇 |
1998年 | 77篇 |
1997年 | 73篇 |
1996年 | 62篇 |
1995年 | 49篇 |
1994年 | 47篇 |
1993年 | 21篇 |
1992年 | 16篇 |
1991年 | 19篇 |
1990年 | 9篇 |
1989年 | 17篇 |
1988年 | 13篇 |
1987年 | 8篇 |
1986年 | 4篇 |
1985年 | 12篇 |
1984年 | 6篇 |
1983年 | 2篇 |
1982年 | 3篇 |
1980年 | 2篇 |
1978年 | 3篇 |
1976年 | 4篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1969年 | 2篇 |
1968年 | 1篇 |
排序方式: 共有9406条查询结果,搜索用时 328 毫秒
91.
马旭东 《中国卫生质量管理》2021,(6):046-50
患者安全问题已经成为世界各国医疗质量管理关注的焦点,从国家层面对医疗质量安全不良事件进行统一定义和分类具有重要意义。通过总结世界卫生组织、美国、英国以及我国目前不良事件分类及严重程度分级情况,结合我国相关上报数据,分析存在问题,建议国家及各级卫生行政部门发挥引导推动作用,医疗机构利用现有国家医疗质量安全相关平台,参考借鉴相关分类,开展同质化医疗质量安全管理工作。 相似文献
92.
93.
血清胆红素与冠脉病变程度及血脂的相关性分析 总被引:15,自引:4,他引:11
目的分析血清胆红素与冠脉病变程度及血脂的关系。方法对冠状动脉造影术确诊的冠心病者和非冠心病者进行病例-对照研究。结果冠心病组血清胆红素水平低于非冠心病组,差异有显著性(P<0.05)。多元逐步回归分析血清直接胆红素进入回归方程,提示血清直接胆红素与冠脉病变程度呈独立负相关,其相关强度与甘油三脂(TG)和空腹血糖(FBS)相似。血清胆红素与血脂直线相关分析提示血清胆红素与甘油三脂、总胆固醇(TCHO)和低密度脂蛋白胆固醇(LDL-C)呈显著负相关。结论血清直接胆红素水平与冠脉病变程度呈独立负相关,低血清胆红素是冠状动脉粥样硬化的危险因素,血清胆红素与甘油三脂、总胆固醇和低密度脂蛋白胆固醇呈负相关。 相似文献
94.
为了保证民法的公平原则,避免医疗纠纷赔偿案件审理中忽视患者本身病情所致的不良后果的情况,对损伤与疾病对患者预后的影响进行了研究.介绍了伤病比的来源,论述了伤病比在医疗纠纷处理中的适用 范围,伤病比的级别与医院承担的赔偿额度.指出应增强伤病比意识,促进医与法的完美结合. 相似文献
95.
96.
《The Foot》2021
Ankle sprain is very common in sports. Research on its prevention is as important as on its treatment as recommended in the 2016 consensus statement of the International Ankle Consortium. Successful prevention depends on the understanding of its mechanism, which has been presented with quantities in some recent case reports. Inciting event was suggested to be an inverted ankle joint at foot strike, however, is still lacking evidence from comparison with non-injury trials. This study investigated the ankle joint orientation at foot strike in successful non-injury cases and compared them with a previously analysed ankle sprain injury case. Two injury-free cutting motions with similar movement approach to a previously analysed ankle sprain injury performed by the same athlete were collected from an online search and were trimmed from 0.05 s before until 0.30 s after the foot strike. The video sequences were then processed by video editing software and then analysed by a model-based image-matching motion analysis technique. Ankle joint orientation at foot strike and the profiles were presented in inversion, plantarflexion and rotation planes, for both the previously analysed injury case and the two non-injury cases. The ankle joint orientation at foot strike was 0–1 degree inverted and 10–21° dorsiflexed in the two non-injury cases, compared to 14° inverted and 16° plantarflexed in the previously analysed injury case. From the case comparison, it can be observed that an inverted ankle joint orientation at foot strike in an inciting event of ankle inversion sprain. 相似文献
97.
Jeff Choi Lakshika Tennakoon Jonathan G. You Aydin Kaghazchi Joseph D. Forrester David A. Spain 《American journal of surgery》2021,221(1):211-215
BackgroundPulmonary contusions are common injuries. Computed tomography reveals vast contused lung volume spectrum, yet pulmonary contusions are defined dichotomously (unilateral vs bilateral). We assessed whether there is stepwise increased risk of pulmonary complications among patients without, with unilateral, and with bilateral pulmonary contusion.MethodsWe identified adults admitted with rib fractures using the largest US inpatient database. After propensity-score-matching patients without vs with unilateral vs bilateral pulmonary contusions and adjusting for residual confounders, we compared risk for pneumonia, ventilator-associated pneumonia (VAP), respiratory failure, intubation, and mortality.ResultsAmong 148,140 encounters of adults with multiple rib fractures, 19% had concomitant pulmonary contusions. Matched patients with pulmonary contusions had increased risk of pneumonia 19% [95%CI:16–33%], respiratory failure 40% [95%CI: 31–50%], and intubation 46% [95%CI: 33–61%]. Delineation showed bilateral contusions, not unilateral contusions, attributed to increased risk of complications.ConclusionsThere is likely a correlation between contused lung volume and risk of pulmonary complications; dichotomously classifying pulmonary contusions is insufficient. Better understanding this correlation requires establishing the clinically significant contusion volume and a correspondingly refined classification system. 相似文献
98.
Sarvdeep Singh Dhatt Vishal Kumar Deepak Neradi Praveen Sodavarapu Tensubam Tomthin Meetei Vijay Goni 《Indian Journal of Orthopaedics》2021,55(4):1046
AimsTo evaluate vitamin D3 levels in patients who presented with increased musculo-skeletal pain after release of lockdown period when compared to pre-lockdown status.IntroductionDuring this COVID pandemic, many countries have implemented lockdown measures and people have to work from home and many students and workers have to restrict themselves to home. During this period, their outdoor activities were limited. After the partial release of this lockdown many of them started to have some kind of physical activity and started experiencing body pains. We evaluated such patients for vitamin D3 levels and symptoms of fibromyalgia.MethodsThis is a retrospective analysis of patients from age group 18–60 presented to outpatient department or on telephonic consultation after partial release of lockdown. All patients who had mild back ache before lockdown and had symptoms exaggerated during this lockdown release were included. All patients were investigated for vitamin D3, PTH, thyroid profile, liver functional and kidney functional tests.ResultsOut of 120 patients presented to us in a period of 3 months, 31 patients had increased symptoms when compared to pre-lockdown status. 20 out of 31 patients had low vitamin D3 levels. 14 patients also developed symptoms of fibromyalgia.ConclusionThere might be many reasons for increased pain during lockdown, but we focussed specially only on vitamin D3 because of its association with increased symptoms of COVID-19. This is a gentle reminder to test for vitamin D3 levels and supplement if found deficient.Supplementary InformationThe online version contains supplementary material available at 10.1007/s43465-021-00376-8. 相似文献
99.
100.
Emrah Caliskan Salih Suha Koparal Volkan Igdir Emre Alp Ozgur Dogan 《Foot and Ankle Surgery》2021,27(4):457-462
BackgroundThe measurement of plantar fascia thickness with ultrasonography can be used for both for diagnosis and as a response-to-treatment parameter in plantar fasciitis. Furthermore, with the recent studies, red cell distribution width may be used as an inflammatory marker. Aim of this study is to investigate the association of red cell distribution width and ultrasonography on diagnosis and monitoring of treatment in patients with plantar fasciitis.MethodsClinically diagnosed 102 patients with plantar fasciitis between the dates January 2016 to July 2018 were analysed. Hemogram, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and plantar fascial ultrasonography were obtained on initial evaluation and in 1 month, 2 months and 3 months of the standard nonoperative treatment; American Orthopaedic Foot & Ankle Hindfoot Score (AOFAS) and Visual Analog Scale (VAS) scores were recorded. Posthoc and multivariate logistic regression analysis were used for statistical analysis on SPSS 21.0.ResultsRed cell distribution width was correlated with plantar fascia thickness by the end of the 1 month (r = 0.26, P = .013). Female sex, BMI over 30 kg/m2, higher red cell distribution width and higher plantar fascia thickness were associated with plantar fasciitis on initial evaluation. Higher red cell distribution width together with higher plantar fascia thickness were also found to be a risk factor for both on initial evaluation and 1 month after treatment in plantar fasciitis.ConclusionThis study shows that association of red cell distribution width and plantar fascia thickness can be not only a diagnostic predictor but also an indicator of treatment response in plantar fasciitis.Level of clinical evidenceLevel IV 相似文献