全文获取类型
收费全文 | 192126篇 |
免费 | 13233篇 |
国内免费 | 4163篇 |
专业分类
耳鼻咽喉 | 3906篇 |
儿科学 | 2329篇 |
妇产科学 | 2495篇 |
基础医学 | 8475篇 |
口腔科学 | 5112篇 |
临床医学 | 39797篇 |
内科学 | 16158篇 |
皮肤病学 | 1492篇 |
神经病学 | 8106篇 |
特种医学 | 3369篇 |
外国民族医学 | 28篇 |
外科学 | 33796篇 |
综合类 | 29985篇 |
现状与发展 | 7篇 |
一般理论 | 7篇 |
预防医学 | 14730篇 |
眼科学 | 5778篇 |
药学 | 12759篇 |
437篇 | |
中国医学 | 12631篇 |
肿瘤学 | 8125篇 |
出版年
2024年 | 455篇 |
2023年 | 3903篇 |
2022年 | 6436篇 |
2021年 | 8835篇 |
2020年 | 9126篇 |
2019年 | 8208篇 |
2018年 | 7459篇 |
2017年 | 7147篇 |
2016年 | 7046篇 |
2015年 | 6830篇 |
2014年 | 15230篇 |
2013年 | 14058篇 |
2012年 | 12941篇 |
2011年 | 14054篇 |
2010年 | 12158篇 |
2009年 | 9228篇 |
2008年 | 8302篇 |
2007年 | 8737篇 |
2006年 | 7583篇 |
2005年 | 6172篇 |
2004年 | 4884篇 |
2003年 | 4267篇 |
2002年 | 3201篇 |
2001年 | 2934篇 |
2000年 | 2392篇 |
1999年 | 2174篇 |
1998年 | 1621篇 |
1997年 | 1570篇 |
1996年 | 1230篇 |
1995年 | 1122篇 |
1994年 | 970篇 |
1993年 | 747篇 |
1992年 | 712篇 |
1991年 | 640篇 |
1990年 | 486篇 |
1989年 | 473篇 |
1988年 | 490篇 |
1987年 | 431篇 |
1986年 | 389篇 |
1985年 | 652篇 |
1984年 | 610篇 |
1983年 | 465篇 |
1982年 | 513篇 |
1981年 | 486篇 |
1980年 | 446篇 |
1979年 | 377篇 |
1978年 | 316篇 |
1977年 | 291篇 |
1976年 | 222篇 |
1975年 | 141篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
贺利平 《实用中西医结合临床》2022,22(14)
目的 探讨胆囊结石合并胆总管结石(CBDS)术后患者复发情况及危险因素。方法 纳入114例2019年1月~2020年12月在本院行ECRP联合LC治疗的胆囊结石合并CBDS患者,回顾性分析其临床资料,根据所选患者ECRP联合LC术后随访1年内是否复发(REC)将其分为REC组(32例)和未REC组(82例)。回顾性统计胆囊结石合并CBDS术后患者REC情况,比较REC组和未REC组的临床资料,并分析胆囊结石合并CBDS术后患者REC的危险因素。结果 114例胆囊结石合并CBDS术后患者REC32例,发生率28.07%。胆囊结石合并CBDS术后患者REC的危险因素为胆道感染、胆道口括约肌切开、术者经验≤3年、胆道括约肌功能障碍(OR=4.170、4.047、3.568、3.367,P<0.05)。结论 胆囊结石合并CBDS术后患者REC的危险因素与胆道感染、胆道口括约肌切开、术者经验≤3年、胆道括约肌功能障碍密切相关,可据此针对性制定临床治疗及护理干预措施方案,以降低胆囊结石合并CBDS术后患者REC率。 相似文献
2.
3.
4.
5.
6.
《Cirugía espa?ola》2022,100(3):149-153
IntroductionThe Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons (AEC).MethodsCross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the AEC.ResultsThe survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure.ConclusionsThe concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the AEC a specific project to assess activities and skills. 相似文献
7.
Mette Nissen Tiina‐Mari Ikheimo Jukka Huttunen Ville Leinonen Henna‐Kaisa Jyrkknen Mikael von und zu Fraunberg 《Neuromodulation》2021,24(1):102-111
ObjectiveSpinal cord stimulation (SCS) is an effective treatment in failed back surgery syndrome (FBSS). We studied the effect of preimplantation opioid use on SCS outcome and the effect of SCS on opioid use during a two-year follow-up period.Materials and methodsThe study cohort included 211 consecutive FBSS patients who underwent an SCS trial from January 1997 to March 2014. Participants were divided into groups, which were as follows: 1) SCS trial only (n = 47), 2) successful SCS (implanted and in use throughout the two-year follow-up period, n = 131), and 3) unsuccessful SCS (implanted but later explanted or revised due to inadequate pain relief, n = 29). Patients who underwent explantation for other reasons (n = 4) were excluded. Opioid purchase data from January 1995 to March 2016 were retrieved from national registries.ResultsHigher preimplantation opioid doses associated with unsuccessful SCS (ROC: AUC = 0.66, p = 0.009), with 35 morphine milligram equivalents (MME)/day as the optimal cutoff value. All opioids were discontinued in 23% of patients with successful SCS, but in none of the patients with unsuccessful SCS (p = 0.004). Strong opioids were discontinued in 39% of patients with successful SCS, but in none of the patients with unsuccessful SCS (p = 0.04). Mean opioid dose escalated from 18 ± 4 MME/day to 36 ± 6 MME/day with successful SCS and from 22 ± 8 MME/day to 82 ± 21 MME/day with unsuccessful SCS (p < 0.001).ConclusionsHigher preimplantation opioid doses were associated with SCS failure, suggesting the need for opioid tapering before implantation. With continuous SCS therapy and no explantation or revision due to inadequate pain relief, 39% of FBSS patients discontinued strong opioids, and 23% discontinued all opioids. This indicates that SCS should be considered before detrimental dose escalation. 相似文献
8.
Discrimination towards individuals with disabilities is problematic within nursing. There have been calls to increase diversity in nursing and this includes embracing nurses with disabilities. Increasing diversity in nursing requires increasing diversity among nursing students; in this way, nurse educators are gatekeepers to the profession. Clinical education is a crucial element of nursing education, yet there have been very few studies related to the clinical education of nursing students with disabilities. There have been no studies of attitudes of acute care nurse preceptors toward students with disabilities in the United States. This gap is important as the majority of clinical experiences occur in the acute care environment. Utilizing a focused ethnography, semi-structured interviews were conducted with 20 acute care nurses with at least two years’ experience precepting students. While positive feelings about nursing students with disabilities were shared, thoughts and behavioral intentions remained negative. Six themes emerged: safety, barriers, otherness, communicating to meet needs, disclosure, and student versus colleague. Attitudinal barriers are the primary barriers faced by individuals with disabilities in becoming and practicing as nurses. Nurses in practice and education must embrace more inclusive attitudes towards individuals with disabilities. 相似文献
9.
AimThe aim of the study was to describe the characteristics of the Bachelor’s thesis of fourth-year nursing students at a Spanish public university, the criteria that students used to choose a topic and students’ degree of satisfaction after completing the Bachelor’s thesis.DesignQuantitative study.MethodsWe examined 420 Bachelor’s theses carried out from 2013 to 2018 and conducted an online survey among fourth-year students in the 2017–18 and 2018–19 academic years (81 completed questionnaires).ResultsThe Bachelor’s thesis took the form of a research proposal. The most frequent proposal type was a qualitative hospital-based study whose objective was to understand the experiences of adult or adolescent patients, close family members, or nurses. Students chose topics for personal reasons. Most participants reported feeling satisfied with the knowledge and skills acquired.ConclusionsStudents completing a Bachelor’s thesis in the form of a research proposal have the potential to transfer their research skills to their nursing practice. 相似文献
10.
目的 根据乳腺癌内分泌治疗患者的症状特征,编制适用于我国乳腺癌内分泌治疗患者的症状评估量表,并检验其信效度。方法 在文献回顾及参照现有症状评估量表的基础上编制量表初始条目池;通过2轮德尔菲专家函询,形成初始版量表;通过对11例患者的认知性访谈,对量表条目进一步修订,形成临床测试版量表。便利选取2020年7月—9月在浙江省某三级甲等肿瘤医院门诊或住院的325例乳腺癌内分泌治疗患者进行问卷调查,检验量表信效度。 结果 形成的最终版乳腺癌内分泌治疗患者症状评估量表包括33个条目,探索性因子分析提取7个公因子,累计方差贡献率为68.76%;各条目内容效度指数为0.78~1.00,量表内容效度指数为0.91;内在相关性检验结果显示,量表各维度与总量表相关系数为0.58~0.79(P<0.05);维度间相关系数为0.26~0.52(P<0.05);总量表Cronbach’s α系数为0.94,重测信度为0.95,折半信度为0.84。结论 编制的乳腺癌内分泌治疗患者症状评估量表具有良好的信效度,适用于相关人群的症状测评。 相似文献