全文获取类型
收费全文 | 41702篇 |
免费 | 9016篇 |
国内免费 | 273篇 |
专业分类
耳鼻咽喉 | 815篇 |
儿科学 | 1027篇 |
妇产科学 | 1080篇 |
基础医学 | 3284篇 |
口腔科学 | 2152篇 |
临床医学 | 9494篇 |
内科学 | 9176篇 |
皮肤病学 | 1199篇 |
神经病学 | 4947篇 |
特种医学 | 1305篇 |
外科学 | 5161篇 |
综合类 | 429篇 |
现状与发展 | 4篇 |
一般理论 | 5篇 |
预防医学 | 4837篇 |
眼科学 | 706篇 |
药学 | 1741篇 |
1篇 | |
中国医学 | 158篇 |
肿瘤学 | 3470篇 |
出版年
2024年 | 300篇 |
2023年 | 1788篇 |
2022年 | 803篇 |
2021年 | 1452篇 |
2020年 | 1896篇 |
2019年 | 1069篇 |
2018年 | 2494篇 |
2017年 | 2522篇 |
2016年 | 2636篇 |
2015年 | 2866篇 |
2014年 | 3216篇 |
2013年 | 3672篇 |
2012年 | 2480篇 |
2011年 | 2523篇 |
2010年 | 2316篇 |
2009年 | 2724篇 |
2008年 | 1967篇 |
2007年 | 1658篇 |
2006年 | 1717篇 |
2005年 | 1369篇 |
2004年 | 1179篇 |
2003年 | 1033篇 |
2002年 | 894篇 |
2001年 | 553篇 |
2000年 | 336篇 |
1999年 | 463篇 |
1998年 | 620篇 |
1997年 | 640篇 |
1996年 | 597篇 |
1995年 | 508篇 |
1994年 | 360篇 |
1993年 | 264篇 |
1992年 | 210篇 |
1991年 | 199篇 |
1990年 | 161篇 |
1989年 | 197篇 |
1988年 | 170篇 |
1987年 | 129篇 |
1986年 | 114篇 |
1985年 | 117篇 |
1984年 | 98篇 |
1983年 | 80篇 |
1982年 | 67篇 |
1981年 | 80篇 |
1980年 | 43篇 |
1979年 | 38篇 |
1978年 | 49篇 |
1977年 | 40篇 |
1976年 | 36篇 |
1975年 | 37篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Neil Scott Gordon MSc Dip Coun Dip N Cert Ed RCNT RNT RMN Peter Wimpenny RGN BSc Cert Ed RNT 《Journal of advanced nursing》1996,23(3):479-486
This paper, written by two male nurse teachers, describes and analyses their experience of working in a nurse education culture permeated by the philosophy of business management The introduction of business management practices to nurse education is discussed as a reflection of the current political hegemony of market forces and individualism The authors discuss the implications for nurse teachers of being continually exposed to these politically motivated forces which increasingly provide the paradigm for service developments within the United Kingdom health services In discussing the impact of this exposure it is argued that at the personal level individual teachers are experiencing a degree of apathy and personal dissonance which undermines their professional value system, resulting in emotional distress and a crisis of identity It provides a critical reflection on the way organizational dynamics and power relations influence the subjective sense-making of individuals The authors use a multiplicity of perspectives, including those provided by individual psychology, power relations, feminism and personhood, to argue for the need to develop an alternative paradigm which is characterized by the valuing of individual persons, empathic sensitivity and the fostering of creativity been important to us from a personal and professional 相似文献
52.
Assault-injured Adolescents Presenting to the Emergency Department: Causes and Circumstances 总被引:1,自引:0,他引:1
53.
54.
Christopher L. Knight MD Henry A. Sakowski MD Bruce L. Houghton MD Mary B. Laya MD MPH Dawn E. DeWitt MD MSc 《Journal of general internal medicine》2004,19(5P2):594-598
The World Wide Web creates new challenges and opportunities for medical educators. Prominent among these are the lack of consistent standards by which to evaluate web-based educational tools. We present the instrument that was used to review web-based innovations in medical education submissions to the 2003 Society of General Internal Medicine (SGIM) national meeting, and discuss the process used by the SGIM web-based clinical curriculum interest group to develop the instrument. The 5 highest-ranked submissions are summarized with commentary from the reviewers. 相似文献
55.
56.
Jin H. Han MD MSc Karen F. Miller RN MPA Alan B. Storrow MD 《Academic emergency medicine》2007,14(3):228-233
Background: Elder patients with acute coronary syndromes (ACS) are less likely to receive cardiac catheterization. The reasons for this are unclear.
Objectives: To assess whether elder patients who had a documented history of dementia, lived in extended care facilities, or had do not intubate–do not resuscitate (DNR-DNI) advance directives were less likely to receive cardiac catheterization, despite having ACS with high-risk features.
Methods: This was a medical record review conducted at an urban teaching hospital. DNR-DNI status before hospitalization, extended care facility (nursing home or assisted living) residence, and a previous diagnosis of dementia were obtained from the medical record. Patients 65 years and older who presented to the emergency department with acute myocardial infarction or with unstable angina with ST segment deviation were included. Univariate and multivariate logistic regression were performed, and odds ratios (ORs) were reported with their 95% confidence intervals (CIs).
Results: Of the 201 eligible patients, 66 (32.8%) patients did not undergo cardiac catheterization. In the univariate analysis, patients who had dementia, resided in extended care facilities, or were DNR-DNI were less likely to receive cardiac catheterization. Only extended care facility residence (OR, 0.18; 95% CI = 0.04 to 0.83) and DNR-DNI status (OR, 0.19; 95% CI = 0.04 to 0.92) remained significantly associated with decreased cardiac catheterization in the multivariate analysis.
Conclusions: Elder patients with ACS residing in extended care facilities or who are DNR-DNI are less likely to receive cardiac catheterization. Future studies concerning the quality of ACS care for elders should take these variables into account. 相似文献
Objectives: To assess whether elder patients who had a documented history of dementia, lived in extended care facilities, or had do not intubate–do not resuscitate (DNR-DNI) advance directives were less likely to receive cardiac catheterization, despite having ACS with high-risk features.
Methods: This was a medical record review conducted at an urban teaching hospital. DNR-DNI status before hospitalization, extended care facility (nursing home or assisted living) residence, and a previous diagnosis of dementia were obtained from the medical record. Patients 65 years and older who presented to the emergency department with acute myocardial infarction or with unstable angina with ST segment deviation were included. Univariate and multivariate logistic regression were performed, and odds ratios (ORs) were reported with their 95% confidence intervals (CIs).
Results: Of the 201 eligible patients, 66 (32.8%) patients did not undergo cardiac catheterization. In the univariate analysis, patients who had dementia, resided in extended care facilities, or were DNR-DNI were less likely to receive cardiac catheterization. Only extended care facility residence (OR, 0.18; 95% CI = 0.04 to 0.83) and DNR-DNI status (OR, 0.19; 95% CI = 0.04 to 0.92) remained significantly associated with decreased cardiac catheterization in the multivariate analysis.
Conclusions: Elder patients with ACS residing in extended care facilities or who are DNR-DNI are less likely to receive cardiac catheterization. Future studies concerning the quality of ACS care for elders should take these variables into account. 相似文献
57.
Luigi Paolo Badano Maria C Albanese Paola De Biaggio Patrizia Rozbowsky Daniela Miani Claudio Fresco Paolo M Fioretti 《Journal of the American Society of Echocardiography》2004,17(3):253-261
Prevalence of isolated left ventricular (LV) diastolic dysfunction has been reported to be as high as one-third of all heart failure (HF) cases, with an increasing prevalence in the elderly population. However, there is a paucity of prospective data about the prevalence and prognosis of isolated LV diastolic dysfunction in an unselected population of patients hospitalized with HF. Therefore, we prospectively evaluated 179 consecutive patients discharged from our hospital with HF to assess the prevalence of systolic versus diastolic LV dysfunction among patients hospitalized with HF and to compare their demographics, clinical features, self-perceived quality of life (QOL), and 6-month readmission rate and mortality. Among them, 133 (59% men, median age 74 years) showed in sinus rhythm and had no significant primary valvular disease. LV diastolic dysfunction was diagnosed on the basis of the European Study Group on Diastolic HF echocardiographic criteria. QOL was assessed at hospital discharge and 6-month follow-up visit using the Minnesota Living with HF questionnaire. Survival of patients with HF was compared with that of age- and sex-matched general population. In all, 29 patients (22%) had isolated LV diastolic dysfunction and 102 (78%) had prevalent LV systolic dysfunction (ie, LV ejection fraction = 45%). There was no difference in age, sex, or New York Heart Association functional class between patients with LV diastolic or systolic dysfunction. QOL scores were similar between the 2 patient groups with HF both at discharge (39.4 and 34) and at 6-month visit (10.4 and 10.4). Both 6-month readmission rate (48% and 48%) and median inhospital length-of-stay during readmissions (10 days and 10 days) were similar between the 2 patient groups with HF. Finally, 6-month survival, adjusted for age and sex, was similar between patients with LV diastolic or systolic dysfunction (hazard ratio 0.68; 95% confidence interval 0.20-2.35). Using standardized echocardiographic criteria, isolated LV diastolic dysfunction among unselected patients hospitalized with HF was less than previously reported. Patients with HF and isolated diastolic dysfunction showed similar clinical symptoms, self-perceived QOL, readmission rate, and 6-month mortality to patients with prevalent LV systolic dysfunction. 相似文献
58.
59.
Gianluca Cappelleri Giorgio Aldegheri Francesco Ruggieri Daniela Mamo Guido Fanelli Andrea Casati 《Journal canadien d'anesthésie》2007,54(4):283-289
BACKGROUND: We tested the hypothesis that using a subgluteus approach to the sciatic nerve requires a lower concentration of mepivacaine to obtain complete anesthesia as compared with the popliteal approach. METHODS: With midazolam premedication (0.05 mg kg(-1) iv), 48 patients undergoing hallux valgus repair were randomly allocated to receive a sciatic nerve block using either a posterior popliteal (group Popliteal, n = 24) or subgluteus (group Subgluteus, n = 24) approach with 30 mL of local anesthetic injected after elicitation of plantar flexion of the foot with a current 相似文献
60.