全文获取类型
收费全文 | 23995篇 |
免费 | 1855篇 |
国内免费 | 683篇 |
专业分类
耳鼻咽喉 | 49篇 |
儿科学 | 263篇 |
妇产科学 | 162篇 |
基础医学 | 1053篇 |
口腔科学 | 153篇 |
临床医学 | 1835篇 |
内科学 | 3181篇 |
皮肤病学 | 297篇 |
神经病学 | 2086篇 |
特种医学 | 252篇 |
外国民族医学 | 1篇 |
外科学 | 799篇 |
综合类 | 2998篇 |
一般理论 | 3篇 |
预防医学 | 1510篇 |
眼科学 | 173篇 |
药学 | 9395篇 |
7篇 | |
中国医学 | 1599篇 |
肿瘤学 | 717篇 |
出版年
2023年 | 341篇 |
2022年 | 438篇 |
2021年 | 726篇 |
2020年 | 749篇 |
2019年 | 805篇 |
2018年 | 817篇 |
2017年 | 889篇 |
2016年 | 811篇 |
2015年 | 820篇 |
2014年 | 1748篇 |
2013年 | 2513篇 |
2012年 | 1614篇 |
2011年 | 1686篇 |
2010年 | 1399篇 |
2009年 | 1129篇 |
2008年 | 1086篇 |
2007年 | 1097篇 |
2006年 | 914篇 |
2005年 | 797篇 |
2004年 | 655篇 |
2003年 | 632篇 |
2002年 | 463篇 |
2001年 | 464篇 |
2000年 | 365篇 |
1999年 | 304篇 |
1998年 | 249篇 |
1997年 | 258篇 |
1996年 | 219篇 |
1995年 | 211篇 |
1994年 | 183篇 |
1993年 | 200篇 |
1992年 | 203篇 |
1991年 | 157篇 |
1990年 | 144篇 |
1989年 | 124篇 |
1988年 | 127篇 |
1987年 | 86篇 |
1986年 | 102篇 |
1985年 | 138篇 |
1984年 | 124篇 |
1983年 | 98篇 |
1982年 | 104篇 |
1981年 | 69篇 |
1980年 | 78篇 |
1979年 | 63篇 |
1978年 | 64篇 |
1977年 | 61篇 |
1976年 | 50篇 |
1975年 | 45篇 |
1973年 | 26篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Association of Multimodal Pain Control with Patient-Reported Outcomes in Children Undergoing Surgery
《Journal of pediatric surgery》2023,58(6):1206-1212
IntroductionOur aim was to describe practices in multimodal pain management at US children's hospitals and evaluate the association between non-opioid pain management strategies and pediatric patient-reported outcomes (PROs).MethodsData were collected as part of the 18-hospital ENhanced Recovery In CHildren Undergoing Surgery (ENRICH-US) clinical trial. Non-opioid pain management strategies included use of preoperative and postoperative non-opioid analgesics, regional anesthetic blocks, and a biobehavioral intervention. PROs included perioperative nervousness, pain-related functional disability, health-related quality of life (HRQoL). Associations were analyzed using multinomial logistic regression models.ResultsAmong 186 patients, 62 (33%) received preoperative analgesics, 186 (100%) postoperative analgesics, 81 (44%) regional anesthetic block, and 135 (73%) used a biobehavioral intervention. Patients were less likely to report worsened as compared to stable nervousness following regional anesthetic block (relative risk ratio [RRR]:0.31, 95% confidence interval [CI]:0.11–0.85), use of a biobehavioral technique (RRR:0.26, 95% CI:0.10–0.70), and both in combination (RRR:0.08, 95% CI:0.02–0.34). There were no associations of non-opioid pain control modalities with pain-related functional disability or HRQoL.ConclusionUse of postoperative non-opioid analgesics have been largely adopted, while preoperative non-opioid analgesics and regional anesthetic blocks are used less frequently. Regional anesthetic blocks and biobehavioral interventions may mitigate postoperative nervousness in children.Level of evidenceIII. 相似文献
2.
《Vaccine》2022,40(19):2679-2695
Vaccinations are essential for preventing infectious diseases in children with chronic diseases as they have increased risk of infection from frequent use of biologics. Response to immunizations in this group is not well known.ObjectiveA systematic review was performed to evaluate three primary outcomes: efficacy; immunogenicity; and safety of vaccines in children with chronic conditions treated with biologics.MethodsThe protocol for our systematic review and meta-analysis was registered and published with PROSPERO. We searched electronic bibliographic databases for studies published from 2009 to 2019, focusing on vaccinations in children with chronic conditions treated with biologics.ResultsWe retrieved 532 records. Thirty-one full-text articles were selected, and 14 were included in the meta-analysis. No significant publication bias was found. Efficacy: limited data are available regarding the efficacy of vaccination, as most studies have focused on immunogenicity as surrogate outcome for efficacy. Immunogenicity: patients receiving anti-TNF-alpha therapy had a statistically significant risk of poor seroconversion (p = 0.028) and seroprotection by the serotype B influenza vaccine [inflammatory bowel disease (IBD) p = 0.013; juvenile idiopathic arthritis (JIA) p = 0.004]. We found adequate responses with H1N1 and H3N2 serotypes. Few studies existed for pneumococcal, hepatitis A virus, hepatitis B virus, varicella-zoster virus, Measles Mumps Rubella virus, and multiple vaccine administration. Safety: vaccine administration was not associated with serious side effects, but JIA patients on anti-TNF alpha therapy had a statistically significant risk of presenting with myalgia or arthralgia postinfluenza vaccine (p = 0.014).ConclusionsMore evidence concerning efficacy, immunogenicity, and safety of vaccinations is needed to guide physicians in the vaccine decision process for this pediatric population. 相似文献
3.
4.
目的 本研究旨在探讨原发性高血压患者脉图参数与心血管危险分层的相关性,为原发性高血压患者心血管风险事件预警提供中医特色的依据。方法 采集435例原发性高血压患者的症状体征、脉象信息、生化指标等,分为低中危组、高危组、很高危组,采用单因素方差分析、秩和检验、有序logistic回归分析等方法,探讨原发性高血压患者脉图参数与心血管危险分层的相关性。结果 ①高血压低中危组→高危组→很高危组患者病程逐渐延长,两两组间比较有统计学差异;②高血压低中危组→高危组→很高危组患者的脉图参数H3/H1、H4/H1逐渐上升;高血压患者很高危组H5/H1、T1/T低于低中危组;③有序logistic回归分析结果显示,脉图参数T1、T4、T5、T为影响因素。结论 病程、血脂、肾功能是高血压患者心血管危险分层的影响因素之一。心血管危险分层等级的升高与脉图参数H3/H1、H4/H1、T5、T的升高及H5/H1、T4、T1的降低相关,说明脉图能一定程度上反映原发性高血压患者血管壁增厚、血管内壁受损、血管硬化及左心室收缩功能的减退程度。 相似文献
5.
6.
7.
8.
IntroductionNon-motor DBS outcomes have received little attention in ET relative to PD. This study examines neuropsychological outcomes in ET following thalamic VIM DBS.MethodsFifty patients completed neuropsychological evaluations preoperatively and approximately seven months postoperatively. Cognition and mood changes were analyzed at the group level and individual level. Additional associations with treatment, disease, and demographic characteristics were assessed.ResultsSignificant cognitive decline was not observed at the group level. At the individual level, 46% of patients demonstrated at least subtle overall cognitive decline (≥1SD on at least one test within at least two domains). Mild decline (≥1SD) was seen in 10%–29.17% of patients on individual tests across all cognitive domains, with highest rates in verbal memory. Substantial cognitive decline (≥2SD) occurred in less than 9% of the sample across all tests. Factors related to cognitive decline included higher DBS parameter settings, older age of ET onset, intracranial complications, and inability to reduce ET medications postoperatively. Depression and anxiety did not change when accounting for questionnaire items that could be falsely elevated by tremor.ConclusionSubstantial cognitive decline after VIM DBS is rare in patients with ET. However, subtle decrements can occur across cognitive domains and particularly in verbal memory. DBS parameter settings may relate to cognitive decline. Further research is needed to better understand possible associations with electrode lateralization and other variables that could also relate to disease progression and test-retest effects. Symptoms of depression and anxiety remain stable. 相似文献
9.
10.
昆虫抗菌肽是昆虫为抵御外界病原微生物感染产生的免疫活性物质的总称,其优异的抗炎活性使其具有广阔的应用前景。综述了不同种类昆虫抗菌肽的抗炎活性及可能涉及的信号通路,介绍了昆虫抗菌肽临床研究现状,以期为昆虫抗菌肽的应用研究提供文献参考。 相似文献