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   21123篇
  免费   3024篇
  国内免费   129篇
耳鼻咽喉   172篇
儿科学   267篇
妇产科学   340篇
基础医学   1347篇
口腔科学   759篇
临床医学   6350篇
内科学   2438篇
皮肤病学   226篇
神经病学   789篇
特种医学   310篇
外国民族医学   4篇
外科学   2537篇
综合类   1767篇
现状与发展   1篇
一般理论   9篇
预防医学   4076篇
眼科学   133篇
药学   1219篇
  24篇
中国医学   268篇
肿瘤学   1240篇
  2024年   104篇
  2023年   710篇
  2022年   672篇
  2021年   1113篇
  2020年   1314篇
  2019年   1441篇
  2018年   1272篇
  2017年   1228篇
  2016年   1017篇
  2015年   1128篇
  2014年   1468篇
  2013年   1741篇
  2012年   1152篇
  2011年   1228篇
  2010年   1070篇
  2009年   1030篇
  2008年   958篇
  2007年   915篇
  2006年   778篇
  2005年   679篇
  2004年   533篇
  2003年   493篇
  2002年   385篇
  2001年   310篇
  2000年   272篇
  1999年   254篇
  1998年   194篇
  1997年   134篇
  1996年   115篇
  1995年   99篇
  1994年   84篇
  1993年   79篇
  1992年   56篇
  1991年   48篇
  1990年   30篇
  1989年   18篇
  1988年   29篇
  1987年   21篇
  1986年   14篇
  1985年   12篇
  1984年   16篇
  1983年   8篇
  1982年   14篇
  1981年   4篇
  1980年   10篇
  1979年   6篇
  1978年   6篇
  1976年   3篇
  1974年   4篇
  1973年   4篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
BackgroundEngaging patients in health care, research and policy is essential to improving patient‐important health outcomes and the quality of care. Although the importance of patient engagement is increasingly acknowledged, clinicians and researchers still find it difficult to engage patients, especially paediatric patients. To facilitate the engagement of children and adolescents in health care, the aim of this project is to develop an engagement game.MethodsA user‐centred design was used to develop a patient engagement game in three steps: (1) identification of important themes for adolescents regarding their illness, treatment and hospital care, (2) evaluation of the draft version of the game and (3) testing usability in clinical practice. Adolescents (12–18 years) were engaged in all steps of the development process through focus groups, interviews or a workshop. These were audio‐recorded, transcribed verbatim and analysed in MAXQDA.Results(1) The important themes for adolescents (N = 15) were included: visiting the hospital, participating, disease and treatment, social environment, feelings, dealing with staff, acceptation, autonomy, disclosure and chronically ill peers. (2) Then, based on these themes, the engagement game was developed and the draft version was evaluated by 13 adolescents. Based on their feedback, changes were made to the game (e.g., adjusting the images and changing the game rules). (3) Regarding usability, the pilot version was evaluated positively. The game helped adolescents to give their opinion. Based on the feedback of adolescents, some last adjustments (e.g., changing colours and adding a game board) were made, which led to the final version of the game, All Voices Count.ConclusionsWorking together with adolescents, All Voices Count, a patient engagement game was developed. This game provides clinicians with a tool that supports shared decision‐making to address adolescents'' wishes and needs.Patient or Public ContributionPaediatric patients, clinicians, researchers, youth panel of Fonds NutsOhra and patient associations (Patient Alliance for Rare and Genetic Diseases, Dutch Childhood Cancer Organization) were involved in all phases of the development of the patient engagement game—from writing the project plan to the final version of the game.  相似文献   
73.
IntroductionThe lack of racial/ethnic diversity in research potentially limits the generalizability of findings to a broader population, highlighting the need for greater diversity and inclusion in clinical research. Qualitative research (i.e., focus groups) was conducted to identify (i) the potential motivators and barriers to study participation across different races and ethnicities; (ii) preferred delivery of education and information to support healthcare decision‐making and the role of the community.MethodsPatient focus groups were conducted with 26 participants from the sponsor''s Patient Engagement Research Councils selected through subjective sampling. Recruitment prioritized adequate representation across different race/ethnic groups. Participation was voluntary and participants underwent a confidential interview process before selection. Narrative analysis was used to identify themes and draw insights from interactions. Experienced research specialists identified emerging concepts, and these were tested against new observations. The frequency of each concept was examined to understand its importance.ResultsBased on self‐selected race/ethnicity, participants were divided into five focus groups (Groups: African American/Black: 2; Hispanic/Latino, Asian American, and white: 1 each) and were asked to share their experiences/opinions regarding the stated objectives. Barriers to study participation included: limited awareness of opportunities to participate in research, fears about changes in standard therapy, breaking cultural norms/stigma, religion‐related concerns and mistrust of clinical research. Participants identified the importance of transparency by pharmaceutical companies and other entities to build trust and partnership and cited key roles that communities can play. The perceptions of the African American group regarding diversity/inclusion in research studies appeared to be different from other groups; a lack of trust in healthcare providers, concerns about historical instances of research abuse and the importance of prayer were cited.ConclusionThis study provided insights into barriers to study participation, and also highlighted the need for pharmaceutical companies and other entities to authentically engage in strategies that build trust within communities to enhance recruitment among diverse populations.Patient or Public ContributionThe data collected in the present study was provided by the participants in the focus groups.  相似文献   
74.
75.
BackgroundLong‐term follow‐up is necessary to understand the impact of perinatal interventions. Exploring parents'' motives and experiences in consenting to their children taking part in longitudinal studies and understanding what outcomes are important to families may enhance participation and mitigate the loss to follow‐up. As existing evidence is largely based on investigators'' perspectives using Western samples, the present pilot study explored parents'' perspectives in a multicultural New Zealand context.MethodsData were generated using semi‐structured interviews with parents whose children had participated in a longitudinal study after neonatal recruitment. Parents'' experiences of being part of the study were analysed thematically using an inductive approach.ResultsParents (n = 16) were generally happy with the outcomes measured. Additionally, parents were interested in lifelong goals such as the impact of parental diabetes. We identified three themes: (1) Facilitators: Research participation was aided by motives and parent and research characteristics such as wishing to help others and straightforward recruitment; (2) Barriers: A hesitancy to participate was due to technical and clinical research aspects, participation burden and cultural barriers, such as complex wording, time commitment and nonindigenous research and (3) Benefits: Children and parents experienced advantages such as the opportunity for education.ConclusionsParents reported positive experiences and described the unexpected benefit of increasing families'' health knowledge through participation. Improvements for current follow‐up studies were identified. Different ethnicities reported different experiences and perspectives, which warrants ongoing research, particularly with indigenous research participants.Patient or Public ContributionNo active partnership with parents of patients took place.  相似文献   
76.
BackgroundCommunicating about medications across transitions of care is important in older patients who frequently move between health care settings. While there is increasing interest in understanding patient communication across transitions of care, little is known about older patients'' involvement in formal and informal modes of communication regarding managing medications.ObjectiveThe aim of this paper was to explore how older patients participated in managing their medications across transitions of care through formal and informal modes of communication.MethodsThe study was conducted across two metropolitan hospitals: an acute hospital and a geriatric rehabilitation hospital in metropolitan Melbourne, Australia. A focused ethnographic design was used involving semi‐structured interviews (n = 50), observations (203 h) and individual interviews or focus groups (n = 25). Following thematic analysis, data were analysed using Fairclough''s Critical Discourse Analysis.ResultsData analysis revealed two major discursive practices, which comprised of an interplay between formal and informal communication and environmental influences on formal and informal communication. Self‐created patient notes were used by older patients to initiate informal discussion with health professionals about medication decisions, which challenged traditional unequal power relations between health professionals and patients. Formal prompts on electronic medication administration records facilitated the continuous information discourse about patients'' medications across transitions of care and encouraged health professionals to seek out older patients'' preferences through informal bedside interactions. Environmental influences on communication comprised health professionals'' physical movements across private and public spaces in the ward, their distance from older patients at the bedside and utilization of the computer systems during patient encounters.ConclusionOlder patients'' self‐created medication notes enabled them to take on a more active role in formal and informal medication communication across transitions of care. Older patients and family members did not have continuous access to information about medication changes during their hospital stay and systems often failed to address older patients'' key concerns about their medications, which hindered their active involvement in formal and informal communication.Patient or Public ContributionOlder adults, family members and health professionals volunteered to be interviewed and observed.  相似文献   
77.
BackgroundLung cancer treatment decisions are typically made among clinical experts in a multidisciplinary tumour board (MTB) based on clinical data and guidelines. The rise of artificial intelligence and cultural shifts towards patient autonomy are changing the nature of clinical decision‐making towards personalized treatments. This can be supported by clinical decision support systems (CDSSs) that generate personalized treatment information as a basis for shared decision‐making (SDM). Little is known about lung cancer patients'' treatment decisions and the potential for SDM supported by CDSSs. The aim of this study is to understand to what extent SDM is done in current practice and what clinicians need to improve it.ObjectiveTo explore (1) the extent to which patient preferences are taken into consideration in non‐small‐cell lung cancer (NSCLC) treatment decisions; (2) clinician perspectives on using CDSSs to support SDM.DesignMixed methods study consisting of a retrospective cohort study on patient deviation from MTB advice and reasons for deviation, qualitative interviews with lung cancer specialists and observations of MTB discussions and patient consultations.Setting and ParticipantsNSCLC patients (N = 257) treated at a single radiotherapy clinic and nine lung cancer specialists from six Dutch clinics.ResultsWe found a 10.9% (n = 28) deviation rate from MTB advice; 50% (n = 14) were due to patient preference, of which 85.7% (n = 12) chose a less intensive treatment than MTB advice. Current MTB recommendations are based on clinician experience, guidelines and patients'' performance status. Most specialists (n = 7) were receptive towards CDSSs but cited barriers, such as lack of trust, lack of validation studies and time. CDSSs were considered valuable during MTB discussions rather than in consultations.ConclusionLung cancer decisions are heavily influenced by clinical guidelines and experience, yet many patients prefer less intensive treatments. CDSSs can support SDM by presenting the harms and benefits of different treatment options rather than giving single treatment advice. External validation of CDSSs should be prioritized.Patient or Public ContributionThis study did not involve patients or the public explicitly; however, the study design was informed by prior interviews with volunteers of a cancer patient advocacy group. The study objectives and data collection were supported by Dutch health care insurer CZ for a project titled ‘My Best Treatment’ that improves patient‐centeredness and the lung cancer patient pathway in the Netherlands.  相似文献   
78.
A 64-year-old man in a severely immunocompromised state due to acute myelogenous leukemia died, respirator-unaided, about 10 h after the abrupt onset of coma. An earlier blood culture had yielded Bacillus cereus. The autopsy, performed 2 h after death, demonstrated diffuse subarachnoid hemorrhage without berry aneurysms, and the formalin-fixed brain was tinged with gray-brownish discoloration. The sections of the brain presented a whitish tint of the surface layer of all portion of the cerebral cortices, even those in the sulci. Histological examination of the brain revealed leptomeningeal B. cereus dissemination, and widespread necrosis of the leptomeninges and arachnoid vessels without inflammatory cell reaction. The grossly recognizable whitish surface layer of the cerebral cortex showed overt hyperchromatism, and contained neurons more degenerative than those located in the deeper cortical layer. The total absence of inflammatory reaction may be explained by a combination of the immunocompromised state of the patient and the character of B. cereus infection, which in itself induces little inflammatory reaction. The prominent lesions were confined to the cerebral surface layer and leptomeningeal tissue including the arachnoid vessels, which were all bathed in the cerebrospinal fluid, suggesting that some necrotizing toxins had been secreted into the fluid by the B. cereus. The necrosis of arachnoid vessels is thought to have in turn caused diffuse subarachnoid hemorrhage and marked disturbance of the cerebral blood flow, resulting in the terminal coma. Received: 4 April 1996 / Revised, accepted: 8 September 1996  相似文献   
79.
目的探讨梗死面积不同的急性脑梗死患者血浆一氧化氮(NO)及血小板α颗粒膜蛋白(GMP-140)水平及其临床意义。方法采用硝酸还原法和双抗体夹心酶联吸附法测定116例急性脑梗死患者进行血浆NO及GMP-140水平,并分别和41例正常对照组比较,同时将脑梗死的血浆NO及GMP-140水平作直线相关分析。结果脑梗死组患者血浆NO含量显著低于正常对照组(P<0.01),血浆NO含量与梗死灶大小明显负相关(P<0.01);脑梗死组患者血浆GMP-140含量高于正常对照组(P<0.01),血浆GMP-140含量与梗死灶呈正相关。急性脑梗死患者血浆NO和GMP-140之间没有直线相关性(r=0.067,P>0.05)。结论急性脑梗死血浆NO及GMP-140水平的测定,对估计梗死灶面积与病情有很重要的价值。  相似文献   
80.
目的探讨参芪汤治疗HIV感染者/AIDS“气血两亏”型氧自由基及其可能的作用机制。方法应用参芪颗粒对HIV感染者/AIDS“气血两亏”型16例进行治疗,经3月的观察,对比前后临床表现及氧自由基的变化。结果治疗后HIV/AIDS患者症状改善、体征积分,提高超氧化物歧化酶(SOD)含量、增加还原型谷胱甘肽(GSH)、谷胱甘肽过氧化物酶(GSH—PX)活力。结论应用参芪颗粒治疗HIV感染者/AIDS“气血两亏”型,提高抗氧自由基水平,提高免疫功能,有明显临床疗效。  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