全文获取类型
收费全文 | 36661篇 |
免费 | 2079篇 |
国内免费 | 133篇 |
专业分类
耳鼻咽喉 | 456篇 |
儿科学 | 1361篇 |
妇产科学 | 1077篇 |
基础医学 | 5843篇 |
口腔科学 | 775篇 |
临床医学 | 2959篇 |
内科学 | 8074篇 |
皮肤病学 | 617篇 |
神经病学 | 3488篇 |
特种医学 | 1593篇 |
外国民族医学 | 14篇 |
外科学 | 5283篇 |
综合类 | 141篇 |
一般理论 | 7篇 |
预防医学 | 1779篇 |
眼科学 | 611篇 |
药学 | 1852篇 |
中国医学 | 60篇 |
肿瘤学 | 2883篇 |
出版年
2023年 | 177篇 |
2022年 | 358篇 |
2021年 | 596篇 |
2020年 | 358篇 |
2019年 | 519篇 |
2018年 | 666篇 |
2017年 | 540篇 |
2016年 | 741篇 |
2015年 | 724篇 |
2014年 | 1014篇 |
2013年 | 1300篇 |
2012年 | 1986篇 |
2011年 | 2070篇 |
2010年 | 1081篇 |
2009年 | 1082篇 |
2008年 | 1861篇 |
2007年 | 1989篇 |
2006年 | 1882篇 |
2005年 | 1897篇 |
2004年 | 1648篇 |
2003年 | 1652篇 |
2002年 | 1473篇 |
2001年 | 993篇 |
2000年 | 1025篇 |
1999年 | 885篇 |
1998年 | 480篇 |
1997年 | 353篇 |
1996年 | 298篇 |
1995年 | 279篇 |
1994年 | 244篇 |
1993年 | 228篇 |
1992年 | 515篇 |
1991年 | 566篇 |
1990年 | 522篇 |
1989年 | 439篇 |
1988年 | 425篇 |
1987年 | 430篇 |
1986年 | 414篇 |
1985年 | 414篇 |
1984年 | 304篇 |
1983年 | 237篇 |
1982年 | 170篇 |
1981年 | 172篇 |
1979年 | 272篇 |
1978年 | 192篇 |
1977年 | 165篇 |
1975年 | 171篇 |
1974年 | 209篇 |
1973年 | 181篇 |
1972年 | 160篇 |
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
1.
Michels Guido Horn Rudolf Helfen Andreas Hagendorff Andreas Jung Christian Hoffmann Beatrice Jaspers Natalie Kinkel Horst Greim Clemens-Alexander Knebel Fabian Bauersachs Johann Busch Hans-Jörg Kiefl Daniel Spiel Alexander O. Marx Gernot Dietrich Christoph F. 《Der Anaesthesist》2022,71(4):307-310
Die Anaesthesiologie - 相似文献
2.
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
3.
Hommes Franziska Mohsenpour Amir Kropff Dana Pilgram Lisa Matusall Svenja von Philipsborn Peter Sell Kerstin 《Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz》2022,65(1):96-106
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz - Akteure der öffentlichen Gesundheit (Public Health) tragen wesentlich zu Gesundheitsschutz, -förderung und... 相似文献
4.
Wojciech Szychta M.D. Ph.D. Gheorghe Cerin M.D. Ph.D. F.E.S.C. Bogdan Adrian Popa M.D. Armienti Felice M.D. Guido Lanzillo M.D. Ph.D. Marco Diena M.D. Grzegorz Opolski M.D. Ph.D. F.E.S.C. 《Echocardiography (Mount Kisco, N.Y.)》2015,32(6):1040-1043
Sinus venosus atrial septal defect (SV‐ASD) usually coexists with partial anomalous pulmonary vein connection (PAPVC). It is a difficult diagnosis in transthoracic echocardiography (TTE) due to eccentric position of defects. We present a rare case of atypical anatomical variation in PAPVC, which was never described before. Two right pulmonary veins drained into superior vena cava, which overrode SV‐ASD and interatrial septum, a third pulmonary vein into the right atrium. Complete diagnosis could not be set after TTE, nor transesophageal echocardiography, whereas angio‐CT was finally conclusive. This diagnostic approach allowed the surgical planning. 相似文献
5.
6.
Gian Eugenio Tontini Guido Manfredi Stefania Orlando Helmut Neumann Maurizio Vecchi Elisabetta Buscarini Luca Elli 《Digestive endoscopy》2019,31(6):627-643
Over the last decade, impressive technological advances have occurred in ultrasonography and small‐bowel endoscopy. Nowadays, endoscopic ultrasonography is an essential diagnostic tool and a therapeutic weapon for pancreatobiliary disorders. Capsule endoscopy and device‐assisted enteroscopy have quickly become the reference standard for the diagnosis of small‐bowel luminal diseases, thereby leading to radical changes in diagnostic and therapeutic pathways. We herein provide an up‐to‐date overview of the latest advances in endoscopic ultrasonography and small‐bowel endoscopy, focusing on the emerging paradigms and technological innovations that might improve clinical practice in the near future. 相似文献
7.
8.
Psychological characteristics and physiological reactivity to acute stress in mothers of children with autism spectrum disorder 总被引:1,自引:0,他引:1
Elena Pattini Luca Carnevali Alfonso Troisi Guido Matrella Dolores Rollo Mauro Fornari Andrea Sgoifo 《Stress and health》2019,35(4):421-431
Stress related to parenting a child with autism spectrum disorder can differently affect caregiver's physiological reactivity to acute stress. Here, parental stress levels, psychological characteristics, and coping strategies were assessed alongside measures of heart rate, heart rate variability, and cortisol during a psychosocial stress test in mothers of children with ASD (M‐ASD, n = 15) and mothers of typically developing children (n = 15). M‐ASD reported significantly higher levels of parental stress, anxiety, negative affectivity, social inhibition, and a larger preference for avoidance strategies. M‐ASD showed larger heart rate and cortisol responses to the psychosocial stress test. A positive relationship was found between parental stress levels and the magnitude of the cortisol stress response in both groups. The present findings indicate exaggerated physiological reactivity to acute psychosocial stress in M‐ASD and prompt further research to explore the role of individual differences in mediating the effects of parental stress on physiological stress responses. 相似文献
9.
10.
Die Unfallchirurgie - Zur Diagnostik von Schultergelenkerkrankungen wird routinemäßig die Magnetresonanztomographie (MRT) durchgeführt. Diese kann entsprechend der klinischen... 相似文献