首页 | 本学科首页   官方微博 | 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   11715篇
  免费   529篇
  国内免费   189篇
耳鼻咽喉   79篇
儿科学   329篇
妇产科学   165篇
基础医学   839篇
口腔科学   157篇
临床医学   1288篇
内科学   1864篇
皮肤病学   160篇
神经病学   199篇
特种医学   309篇
外科学   1716篇
综合类   1787篇
预防医学   2461篇
眼科学   32篇
药学   781篇
  8篇
中国医学   112篇
肿瘤学   147篇
  2024年   10篇
  2023年   146篇
  2022年   338篇
  2021年   419篇
  2020年   482篇
  2019年   378篇
  2018年   403篇
  2017年   358篇
  2016年   385篇
  2015年   441篇
  2014年   969篇
  2013年   883篇
  2012年   967篇
  2011年   896篇
  2010年   671篇
  2009年   543篇
  2008年   533篇
  2007年   522篇
  2006年   494篇
  2005年   421篇
  2004年   337篇
  2003年   300篇
  2002年   194篇
  2001年   177篇
  2000年   170篇
  1999年   128篇
  1998年   108篇
  1997年   111篇
  1996年   69篇
  1995年   74篇
  1994年   61篇
  1993年   56篇
  1992年   62篇
  1991年   34篇
  1990年   48篇
  1989年   25篇
  1988年   20篇
  1987年   15篇
  1986年   15篇
  1985年   31篇
  1984年   23篇
  1983年   13篇
  1982年   25篇
  1981年   17篇
  1980年   21篇
  1979年   5篇
  1978年   5篇
  1977年   8篇
  1976年   5篇
  1975年   7篇
排序方式: 共有10000条查询结果,搜索用时 718 毫秒
101.
复方磺胺嘧啶锌涂膜剂治疗烧伤的疗效观察   总被引:6,自引:1,他引:5  
目的 观察复方磺胺嘧啶锌涂膜剂治疗浅Ⅱ度、深Ⅱ度 烧伤创面、残余创面抗感染和促进创面愈合的作用。方法 治疗组清 创 后应用复方磺胺嘧啶锌涂膜剂涂于创面的表面,对照组应用1%磺胺嘧啶银霜覆盖创面,共治 疗119例烧伤患者(即222个创面),包括浅Ⅱ度烧伤、深Ⅱ度烧伤、残余小创面及供皮区创面 ,并观察创面完全愈合时间、创面表面细菌培养用药前与用药中的情况以及复方磺胺嘧啶锌 涂膜剂对全身情况的影响。结果 浅Ⅱ度烧伤创面治疗组(10.25±1 .6 9)天完全愈合,对照组(13.15±2.03)天愈合;深Ⅱ度创面治疗组(18.10±2.72)天愈合 ,对照组(21.2±3.64)天愈合,治疗组明显优于对照组(P<0.05);治疗组用药前细 菌培养阳性率是38.8%,治疗中降至9.0%;对照组用药前细菌培养阳性率为32.7%,治疗 中降至25.4%;两组间比较具有显著性差异(P<0.05);患者未出现疼痛、过敏反应 和其它不良反应。结论 复方磺胺嘧啶锌涂膜剂治疗烧伤创面可促进上 皮 化、加速创面愈合、有效地防治创面感染,该药应用简便、适用于社区、基层常见的中、小 面积浅度烧伤治疗。  相似文献   
102.
小儿脑瘫与弓形虫感染关系的研究   总被引:1,自引:0,他引:1  
目的 探讨海南小儿不明原因脑瘫与弓形虫感染的关系,为诊治小儿脑瘫提供依据,方法 以住院确诊不明原因脑瘫患儿为研究组,体检正常的小儿为对照组,比较两组弓形虫抗体IgG和IgM、循环抗原(CAg)、DNA的四项检测,分析弓形虫感染与脑瘫的关系。结果 研究组检测 79例脑瘫患儿中,弓形虫阳性33例,感染率为41.8%,对照组检测269例中,弓形虫阳性23例,感染率为8.6%,两组对比差别非常显著(P<0.001)。结论 弓形虫感染是海南不明原因脑瘫患儿的主要原因之一,对于孕妇、新生儿和婴幼儿的弓形虫感染检测,是防治脑瘫发生的手段之一。  相似文献   
103.
目的 对本单位普通级金黄地鼠群进行体外寄生虫检测。方法 拔毛法;透明胶带粘贴法;刮取皮屑镜检法。结果 有背肛螨寄生于地鼠表皮内(患皮炎部位),鼠群感染率为4.4%。结论 普通级地鼠必须提高级别,从实验动物设施、饲养环境条件、饲养方法、选种育种等诸多方面达到清洁级标准,才能彻底消除体内外寄生虫的感染。  相似文献   
104.
目的探讨腹部手术对全身炎性反应综合征(SIRS)的影响.方法我们分析了82例腹部术后在ICU留住患者,其中,男50例,女32例,平均在ICU留住8.8天.入ICU时APACHEII评分平均为10.8分.按临床资料分为SIRS组和非SIRS组,SIRS组中无明显感染者归为非感染性SIRS,有明确感染者分别诊断为全身性感染和感染性休克.结果按临床资料非SIRS组APACHEII评分平均为7.21分,SIRS组平均为13.34.SIRS组发生率为61.0%(50/82),SIRS组病死率为18%(9/50),而非SIRS组病死率为3.1%(1/32),明显低于SIRS组,二者之间有极显著差异(P<0.01.急诊手术组SIRS发生率64.7%(22/34),其中感染性SIRS发生率为54.5%(12/22),病死率为22.7%95/22),择期手术组SIRS发生率为58.3%(28/48),其中感染性SIRS发生率为32.1%(9/28),病死率为14.3%(4/28),急诊手术组较择期手术组的SIRS和感染性SIRS发生率及死亡率均明显增高.结论按临床资料,APACHEII评分在7.21以上者有明显的SIRS发生倾向.应针对SIRS的发生机理采取相应的治疗措施,并总结了具有发生SIRS高风险的五种疾病及腹部手术后容易诱发SIRS的因素.  相似文献   
105.
106.
AimTo evaluate the impact of the implementation of a best practice infection prevention and control bundle on healthcare associated burn wound infections in a paediatric burns unit.BackgroundBurn patients are vulnerable to infection. For this patient population, infection is associated with increased morbidity and mortality, thereby representing a significant challenge for burns clinicians who care for them.MethodsAn interrupted time series was used to compare healthcare associated burn wound infections in paediatric burn patients before and after implementation of an infection prevention and control bundle. Prospective surveillance of healthcare associated burn wound infections was conducted from 2012 to 2014. Other potential healthcare associated infection rates were also reviewed over the study period, including urinary tract infections, pneumonia, upper respiratory tract infections and sepsis. An infection prevention and control bundle developed in collaboration between the paediatric burn unit and infection control clinicians was implemented in 2013 in addition to previous standard practice.ResultsDuring the study period a total of 626 patients were admitted to the paediatric burns unit. Healthcare associated burn wound infections reduced from 34 in 2012 to 0 in 2014 following the implementation of the infection prevention and control bundle. Pneumonia and sepsis also reduced to 0 in 2013 and 2014, however one upper respiratory tract infection occurred in 2013 and urinary tract infections persisted in 2013.ConclusionThe implementation of an infection prevention and control bundle was effective in reducing healthcare associated burn wound infections, pneumonia and sepsis within our paediatric burns unit. Urinary tract infections remain a challenge for future improvement.  相似文献   
107.
Epstein–Barr virus (EBV) reactivation is a very common and potentially lethal complication of renal transplantation. However, its risk factors and effects on transplant outcome are not well known. Here, we have analysed a large, multi-centre cohort (N = 512) in which 18.4% of the patients experienced EBV reactivation during the first post-transplant year. The patients were characterized pre-transplant and two weeks post-transplant by a multi-level biomarker panel. EBV reactivation was episodic for most patients, only 12 patients showed prolonged viraemia for over four months. Pre-transplant EBV shedding and male sex were associated with significantly increased incidence of post-transplant EBV reactivation. Importantly, we also identified a significant association of post-transplant EBV with acute rejection and with decreased haemoglobin levels. No further severe complications associated with EBV, either episodic or chronic, could be detected. Our data suggest that despite relatively frequent EBV reactivation, it had no association with serious complications during the first post-transplantation year. EBV shedding prior to transplantation could be employed as biomarkers for personalized immunosuppressive therapy. In summary, our results support the employed immunosuppressive regimes as relatively safe with regard to EBV. However, long-term studies are paramount to support these conclusions.  相似文献   
108.
Antibiotic prophylaxis in surgery is one of the most effective measures for preventing surgical site infection, although its use is frequently inadequate and may even increase the risk of infection, toxicities and antimicrobial resistance. As a result of advances in surgical techniques and the emergence of multidrug-resistant organisms, the current guidelines for prophylaxis need to be revised.The Sociedad Española de Enfermedades Infecciosas (Spanish Society of Infectious Diseases and Clinical Microbiology) (SEIMC) together with the Asociación Española de Cirujanos (Spanish Association of Surgeons) (AEC) have revised and updated the recommendations for antibiotic prophylaxis in surgery to adapt them to any type of surgical intervention and to current epidemiology. This document gathers together the recommendations on antimicrobial prophylaxis in the various procedures, with doses, duration, prophylaxis in special patient groups, and in epidemiological settings of multidrug resistance to facilitate standardized management and the safe, effective and rational use of antibiotics in elective surgery.  相似文献   
109.
PurposeTo report outcomes of Debridement, Antibiotic therapy and Implant Retention (DAIR) for periprosthetic knee joint infections (PJI) in the Indian population and to study factors influencing outcomes.MethodsThis was a Retrospective study of 80 cases of acute PJI after total knee arthroplasty who were treated by DAIR, within 2 weeks of onset of infection. A standardised institutional management protocol was applied to all cases. Patients were followed up for a minimum 1 year. Outcomes of DAIR were classified as successful or unsuccessful based on resolution or persistence of infection, and subsequent requirement of revision surgery. Influence of factors, like comorbidities, culture status and microbiological characteristics of causative organism, on outcomes was assessed.ResultsOverall 55 patients (68.75%) had successful eradication of infection after DAIR. 27 (33.7%) patients were culture negative and 53 (66.2%) patients grew organisms on culture. There was no statistically significant difference in outcomes (p = 0.082) between culture-positive cases (69.8% success rate) and (66.7% success rate) in culture negative cases. Furthermore, no difference in outcomes was observed in culture-positive patients between those who grew Gram-positive organisms versus Gram-negative organisms (p = 0.398) Similarly, patient comorbidities did not significantly alter the outcomes after DAIR (p = 0.732).ConclusionOur study demonstrates that early DAIR within 2 weeks of onset of infection using a standard protocol during surgery and postoperatively can result in good outcomes. Patient comorbidities, culture status (positive versus negative), Gram staining characteristics of organisms and the identity of pathogenic bacteria did not influence outcomes of DAIR for acute PJI.  相似文献   
110.
《Neuro-Chirurgie》2021,67(2):152-156
IntroductionComplex spinal surgery is known to be at risk of complications. Surgical site infection is a serious complication in spine surgery and its frequency is significantly increased in adult spinal deformity correction. The aim of this study is to identify patients’ characteristics and risk factors of surgical site infection (SSI) following an osteotomy.MethodsThis is a single-center retrospective study of patients who underwent an osteotomy between January 2015 and December 2017. Surgical site infection diagnosis was based upon patient's clinical evidence of infection, biologic parameters, microbiological criteria and/or image findings.ResultsIn total, 102 patients were eligible and 70 were women (68.6%). Mean age was 65 years old (27–83 years) and mean body mass index (BMI) was 26.14 kg.m−2 (18.4–44.1). Eleven patients were in the SSI group and 91 in the No-SSI group. The mean Schwab grade was 1.5 (1–4) in the SSI group vs. 1.4 (1–5) in the No-SSI group (P = 0.435). The mean operative time was on 201.9 minutes (67–377). Mean length of stay was 20.6 days (10–73) in the SSI group vs. 15 days (5–44) in the No-SSI group (P = 0.041). Favorable outcome was found in 10 patients (90.9%) in the SSI group.ConclusionCorrection surgery for adult spinal deformity with osteotomies carries a high risk of complications specially SSI. Identification of risk factors, prevention and medical management of SSI should be well assessed.  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