全文获取类型
收费全文 | 990481篇 |
免费 | 76718篇 |
国内免费 | 2604篇 |
专业分类
耳鼻咽喉 | 12947篇 |
儿科学 | 34403篇 |
妇产科学 | 28460篇 |
基础医学 | 144327篇 |
口腔科学 | 27682篇 |
临床医学 | 89740篇 |
内科学 | 191926篇 |
皮肤病学 | 22898篇 |
神经病学 | 78539篇 |
特种医学 | 38361篇 |
外国民族医学 | 305篇 |
外科学 | 149153篇 |
综合类 | 23692篇 |
一般理论 | 385篇 |
预防医学 | 77232篇 |
眼科学 | 22539篇 |
药学 | 71667篇 |
3篇 | |
中国医学 | 1961篇 |
肿瘤学 | 53583篇 |
出版年
2018年 | 10559篇 |
2017年 | 8241篇 |
2016年 | 9379篇 |
2015年 | 10603篇 |
2014年 | 14422篇 |
2013年 | 22010篇 |
2012年 | 28995篇 |
2011年 | 30850篇 |
2010年 | 18498篇 |
2009年 | 17449篇 |
2008年 | 28810篇 |
2007年 | 30483篇 |
2006年 | 30985篇 |
2005年 | 29657篇 |
2004年 | 28945篇 |
2003年 | 27773篇 |
2002年 | 26755篇 |
2001年 | 46847篇 |
2000年 | 47908篇 |
1999年 | 40012篇 |
1998年 | 10587篇 |
1997年 | 9523篇 |
1996年 | 9532篇 |
1995年 | 9724篇 |
1994年 | 9058篇 |
1993年 | 8424篇 |
1992年 | 32198篇 |
1991年 | 31447篇 |
1990年 | 30999篇 |
1989年 | 29857篇 |
1988年 | 27145篇 |
1987年 | 27315篇 |
1986年 | 25404篇 |
1985年 | 24586篇 |
1984年 | 18365篇 |
1983年 | 15462篇 |
1982年 | 9250篇 |
1981年 | 8332篇 |
1979年 | 16825篇 |
1978年 | 12192篇 |
1977年 | 10282篇 |
1976年 | 9720篇 |
1975年 | 10154篇 |
1974年 | 12298篇 |
1973年 | 11827篇 |
1972年 | 10878篇 |
1971年 | 10105篇 |
1970年 | 9372篇 |
1969年 | 8714篇 |
1968年 | 8093篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
A. D. Kane J. Soar R. A. Armstrong E. Kursumovic M. T. Davies F. C. Oglesby L. Cortes C. Taylor I. K. Moppett S. Agarwal J. Cordingley J. Dorey S. J. Finney G. Kunst D. N. Lucas G. Nickols R. Mouton J. P. Nolan B. Patel V. J. Pappachan F. Plaat B. R. Scholefield J. H. Smith L. Varney T. M. Cook collaborators 《Anaesthesia》2023,78(6):701-711
Detailed contemporary knowledge of the characteristics of the surgical population, national anaesthetic workload, anaesthetic techniques and behaviours are essential to monitor productivity, inform policy and direct research themes. Every 3–4 years, the Royal College of Anaesthetists, as part of its National Audit Projects (NAP), performs a snapshot activity survey in all UK hospitals delivering anaesthesia, collecting patient-level encounter data from all cases under the care of an anaesthetist. During November 2021, as part of NAP7, anaesthetists recorded details of all cases undertaken over 4 days at their site through an online survey capturing anonymous patient characteristics and anaesthetic details. Of 416 hospital sites invited to participate, 352 (85%) completed the activity survey. From these, 24,177 reports were returned, of which 24,172 (99%) were included in the final dataset. The work patterns by day of the week, time of day and surgical specialty were similar to previous NAP activity surveys. However, in non-obstetric patients, between NAP5 (2013) and NAP7 (2021) activity surveys, the estimated median age of patients increased by 2.3 years from median (IQR) of 50.5 (28.4–69.1) to 52.8 (32.1–69.2) years. The median (IQR) BMI increased from 24.9 (21.5–29.5) to 26.7 (22.3–31.7) kg.m–2. The proportion of patients who scored as ASA physical status 1 decreased from 37% in NAP5 to 24% in NAP7. The use of total intravenous anaesthesia increased from 8% of general anaesthesia cases to 26% between NAP5 and NAP7. Some changes may reflect the impact of the COVID-19 pandemic on the anaesthetic population, though patients with confirmed COVID-19 accounted for only 149 (1%) cases. These data show a rising burden of age, obesity and comorbidity in patients requiring anaesthesia care, likely to impact UK peri-operative services significantly. 相似文献
992.
Jerzy Klijanienko MD PhD Béatrix Cochand-Priollet MD PhD Wiktoria Król-Cieciorowska Michał Jeleń MD PhD Danijela Vrdoljak-Mozetič MD PhD 《Cancer cytopathology》2022,130(7):488-490
The 43rd European Congress of Cytology in Wrocław, Poland, was held as a hybrid meeting in the Fall of 2021. After nearly 2 years without in-person cytology conferences, the 43rd Congress represents 1 of the first major international scientific meetings to occur during the severe acute respiratory syndrome-coronavirus 2 pandemic. Since March 2020, the pandemic situation substantially modified the organization of scientific meetings because of both domestic and international travel restrictions, new health standards, and concern among participants, resulting in new alternative forms of virtual conferencing. Cancer (Cancer Cytopathol) 2022;130:000-000. ; 相似文献
993.
E. Albrecht D. Capel J. B. Rossel M. R. Wolmarans A. Godenèche D. De Paulis J. Cabaton 《Anaesthesia》2023,78(3):315-319
Prolongation of peripheral nerve blockade by intravenous dexamethasone may be extended by intravenous dexmedetomidine. We randomly allocated 122 participants who had intravenous dexamethasone 0.15 mg.kg−1 before interscalene brachial plexus block for day-case arthroscopic rotator cuff repair to intravenous saline (62 participants) or intravenous dexmedetomidine 1 μg.kg−1 (60 participants). The primary outcome was time from block to first oral morphine intake during the first 48 postoperative hours. Fifty-nine participants reported taking oral morphine, 25/62 after placebo and 34/60 after dexmedetomidine, p = 0.10. The time to morphine intake was shorter after dexmedetomidine, hazard ratio (95%CI) 1.68 (1.00–2.82), p = 0.049. Median (IQR [range]) morphine doses were 0 (0–12.5 [0–50]) mg after control vs. 10 (0–30 [0–50]) after dexmedetomidine, a difference (95%CI) of 7 (0–10) mg, p = 0.056. There was no effect of dexmedetomidine on pain at rest or on movement. Intra-operative hypotension was recorded for 27/62 and 50/60 participants after placebo vs. dexmedetomidine, respectively, p < 0.001. Other outcomes were similar, including durations of sensory and motor block. In conclusion, dexmedetomidine shortened the time to oral morphine consumption after interscalene block combined with dexamethasone and caused intra-operative hypotension. 相似文献
994.
995.
996.
997.
998.
999.
Thomas Fuchs-Buder Sorin J. Brull Malin Jonsson Fagerlund J. Ross Renew Guy Cammu Glenn S. Murphy Michiel Warlé Matias Vested Béla Fülesdi Reka Nemes Malachy O. Columb Daniela Damian Peter J. Davis Hajime Iwasaki Lars I. Eriksson 《Acta anaesthesiologica Scandinavica》2023,67(8):994-1017
The set of guidelines for good clinical research practice in pharmacodynamic studies of neuromuscular blocking agents was developed following an international consensus conference in Copenhagen in 1996 (Viby-Mogensen et al., Acta Anaesthesiol Scand 1996, 40 , 59–74); the guidelines were later revised and updated following the second consensus conference in Stockholm in 2005 (Fuchs-Buder et al., Acta Anaesthesiol Scand 2007, 51 , 789–808). In view of new devices and further development of monitoring technologies that emerged since then, (e.g., electromyography, three-dimensional acceleromyography, kinemyography) as well as novel compounds (e.g., sugammadex) a review and update of these recommendations became necessary. The intent of these revised guidelines is to continue to help clinical researchers to conduct high-quality work and advance the field by enhancing the standards, consistency, and comparability of clinical studies. There is growing awareness of the importance of consensus-based reporting standards in clinical trials and observational studies. Such global initiatives are necessary in order to minimize heterogeneous and inadequate data reporting and to improve clarity and comparability between different studies and study cohorts. Variations in definitions of endpoints or outcome variables can introduce confusion and difficulties in interpretation of data, but more importantly, it may preclude building of an adequate body of evidence to achieve reliable conclusions and recommendations. Clinical research in neuromuscular pharmacology and physiology is no exception. 相似文献