首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1977260篇
  免费   154603篇
  国内免费   25494篇
医药卫生   2157357篇
  2021年   25417篇
  2020年   19710篇
  2019年   23965篇
  2018年   30888篇
  2017年   24749篇
  2016年   25559篇
  2015年   32817篇
  2014年   43294篇
  2013年   52587篇
  2012年   74462篇
  2011年   80080篇
  2010年   48014篇
  2009年   42412篇
  2008年   67667篇
  2007年   70863篇
  2006年   71418篇
  2005年   68624篇
  2004年   60784篇
  2003年   57276篇
  2002年   54180篇
  2001年   97607篇
  2000年   100289篇
  1999年   84371篇
  1998年   23781篇
  1997年   21432篇
  1996年   20510篇
  1995年   20396篇
  1994年   18331篇
  1993年   15984篇
  1992年   59613篇
  1991年   57207篇
  1990年   54709篇
  1989年   52230篇
  1988年   47353篇
  1987年   45935篇
  1986年   43038篇
  1985年   40649篇
  1984年   29701篇
  1983年   25112篇
  1982年   14014篇
  1979年   25615篇
  1978年   17580篇
  1977年   14912篇
  1976年   13875篇
  1975年   14553篇
  1974年   17678篇
  1973年   16969篇
  1972年   15722篇
  1971年   14472篇
  1970年   13456篇
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
1.
2.
Modified-release opioids are often prescribed for the management of moderate to severe acute pain following total hip and knee arthroplasty, despite recommendations against their use due to increasing concerns regarding harm. The primary objective of this multicentre study was to examine the impact of modified-release opioid use on the incidence of opioid-related adverse events compared with immediate-release opioid use, among adult inpatients following total hip or knee arthroplasty. Data for total hip and knee arthroplasty inpatients receiving an opioid analgesic for postoperative analgesia during hospitalisation were collected from electronic medical records of three tertiary metropolitan hospitals in Australia. The primary outcome was the incidence of opioid-related adverse events during hospital admission. Patients who received modified with or without immediate-release opioids were matched to those receiving immediate-release opioids only (1:1) using nearest neighbour propensity score matching with patient and clinical characteristics as covariates. This included total opioid dose received. In the matched cohorts, patients given modified-release opioids (n = 347) experienced a higher incidence of opioid-related adverse events overall, compared with those given immediate-release opioids only (20.5%, 71/347 vs. 12.7%, 44/347; difference in proportions 7.8% [95%CI 2.3–13.3%]). Modified-release opioid use was associated with an increased risk of harm when used for acute pain during hospitalisation after total hip or knee arthroplasty.  相似文献   
3.
目的 探讨医院信息系统中增加住院陪护管理功能的应用效果。方法 基于互联网医院、智慧医院等信息系统,开发信息化住院陪护管理功能,包括流行病学史调查、免费核酸申请、电子陪护证办理、体温监测登记及上报和统计查询。该功能与医院智慧护理链接后全院应用。比较功能应用前和应用后的遵医嘱一患一陪达标率、有效陪护证达标率、体温监测并登记日上报达标率和陪护证使用追溯率,评价护士和管理者疫情防控管理的人均耗时以及对该管理功能的满意度。结果 应用信息化陪护管理功能后,一患一陪达标率、有效陪护证达标率、体温监测并登记日上报达标率和陪护证使用追溯率显著高于应用前(均P<0.05);护士陪护管理人均耗时从(554.13±30.77)s降至(311.67±21.54)s(P<0.05);护士和管理者对该信息化陪护管理功能的满意度显著提高(均P<0.05)。结论 信息化住院陪护管理功能的应用有效提升了疫情期间陪护的管理质量和管理效率,提高了一线护士和管理者的满意度。  相似文献   
4.
Renal cell cancer (RCC) represents 2%-3% of all adulthood cancers and is the most common malignant neoplasm of the kidney (90%). In the mid-nineties of the last century, the standard of treatment for patients with metastatic RCC was cytokines. Sunititib and pazopanib were registered in 2007 and 2009, respectively, and have since been the standard first-line treatment for metastatic clear cell RCC (mccRCC). Renal cell cancer is a highly immunogenic tumor with tumor infiltrating cells, including CD8+ T lymphocytes, dendritic cells, natural killer cells (NK) and macrophages. This observation led to the design of new clinical trials in which patients were treated with immunotherapy. With the growing evidence that proangiogenic factors can have immunomodulatory effects on the host’s immune system, the idea of combining angiogenic drugs with immunotherapy has emerged, and new clinical trials have been designed. In the last few years, several therapeutic options have been approved [immunotherapy and immunotherapy/tyrosine kinase inhibitors (TKI)] for the first-line treatment of mccRCC. Nivolumab/ipilimumab is approved for the treatment of patients with intermediate and poor prognoses. Several checkpoint inhibitors (pembrolizumab, nivolumab, avelumab) in combination with TKI (axitinib, lenvatinib, cabozantinib) are approved for the treatment of patients regardless of their International mRCC Database Consortium prognostic group and PD-L1 expression. There is no specific and ideal biomarker that could help in selecting the ideal patient for the appropriate first-line treatment.  相似文献   
5.
Neuroscience and Behavioral Physiology - We present here results from analysis of the formation of brain bioelectrical activity in children and adolescents living in the northern region of Russia...  相似文献   
6.
7.
ABSTRACT BACKGROUND Hepatitis-associated aplastic anemia (HAAA) is a rare condition. Patients with HAAA usually present with acute hepatitis, jaundice and significantly increased transaminase. After 1–2 mo, hepatitis gradually improves, but progressive hemocytopenia, bone marrow hematopoietic failure, and severe or extremely severe aplastic anemia are manifest. Most cases of HAAA are fulminant and usually lethal if left untreated. The literature on Epstein–Barr virus (EBV)-associated HAAA is sparse. CASE SUMMARY We report a 30-year-old man who was admitted to our hospital because of pale yellow urine and skin with a simultaneous decrease in peripheral blood ternary cells. We made a diagnosis of EBV-associated HAAA. The treatment strategy for this patient included eltrombopag, an immunosuppressive regimen of rabbit anti-human thymocyte immunoglobulin, cyclosporine, and supportive care. The patient was discharged in normal physical condition after five months. A hemogram performed on follow-up revealed that he had achieved a complete response. CONCLUSION Eltrombopag plus anti-thymocyte globubin and cyclosporine may be a therapeutic option for EBV-associated HAAA.Larger studies are warranted to confirm.  相似文献   
8.
9.
10.
目的:基于以价值为基础的定价方法,计算核医学学科新增医疗服务项目镭[223 Ra]骨转移瘤治疗的医疗服务价格。为相关新增医疗服务项目的申报和定价打下循证基础,为合理补偿医务人员劳动价值、提升患者服务项目可及性提供依据。方法:采集2021年3—12月使用“镭核素[223 Ra]骨转移瘤治疗资源投入及费用数据采集表”相关数据,开展专家访谈进行系数赋值和基线对照项目确定,得到镭[223 Ra]骨转移瘤治疗服务各个环节的成本和新增服务的价值。结果:镭[223 Ra]骨转移瘤治疗服务按服务特点分为注射前评估、治疗计划、给药、给药后监测、废弃物处理与监测等环节,各环节3地平均人力耗时分别为104分钟、39分钟、25分钟、72分钟和56分钟,中位物耗成本为48.20元,3地总成本(平均人力成本+中位物耗成本)为763.68元。结合系数赋值结果和基线对比项目,得到新增项目的价值为810.19元。结论:运用基于技术难度和风险程度的价值定价理论,计算镭[223 Ra]骨转移瘤治疗新增医疗服务项目的服务价值,建议以价值作为服务定价依据。该定价公式和研究方法不仅可用于其他核医学学科新增服务项目的定价,还适用于现行医疗服务项目的价格动态调整,为未来学科价格工作提供方法学参考。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号