全文获取类型
| 收费全文 | 1835068篇 |
| 免费 | 133274篇 |
| 国内免费 | 2781篇 |
专业分类
| 耳鼻咽喉 | 24128篇 |
| 儿科学 | 60422篇 |
| 妇产科学 | 49402篇 |
| 基础医学 | 276142篇 |
| 口腔科学 | 51621篇 |
| 临床医学 | 169086篇 |
| 内科学 | 354040篇 |
| 皮肤病学 | 40615篇 |
| 神经病学 | 141706篇 |
| 特种医学 | 67868篇 |
| 外国民族医学 | 335篇 |
| 外科学 | 264248篇 |
| 综合类 | 38491篇 |
| 现状与发展 | 4篇 |
| 一般理论 | 692篇 |
| 预防医学 | 146624篇 |
| 眼科学 | 41830篇 |
| 药学 | 136694篇 |
| 9篇 | |
| 中国医学 | 4150篇 |
| 肿瘤学 | 103016篇 |
出版年
| 2018年 | 19683篇 |
| 2017年 | 15106篇 |
| 2016年 | 16587篇 |
| 2015年 | 19028篇 |
| 2014年 | 26152篇 |
| 2013年 | 39880篇 |
| 2012年 | 53657篇 |
| 2011年 | 56977篇 |
| 2010年 | 33213篇 |
| 2009年 | 31789篇 |
| 2008年 | 53651篇 |
| 2007年 | 57458篇 |
| 2006年 | 57452篇 |
| 2005年 | 55443篇 |
| 2004年 | 53547篇 |
| 2003年 | 51171篇 |
| 2002年 | 49593篇 |
| 2001年 | 84556篇 |
| 2000年 | 86174篇 |
| 1999年 | 72166篇 |
| 1998年 | 19869篇 |
| 1997年 | 17612篇 |
| 1996年 | 18171篇 |
| 1995年 | 17266篇 |
| 1994年 | 16045篇 |
| 1993年 | 14940篇 |
| 1992年 | 56697篇 |
| 1991年 | 56088篇 |
| 1990年 | 54346篇 |
| 1989年 | 53120篇 |
| 1988年 | 49009篇 |
| 1987年 | 47838篇 |
| 1986年 | 45619篇 |
| 1985年 | 42955篇 |
| 1984年 | 32468篇 |
| 1983年 | 28029篇 |
| 1982年 | 16217篇 |
| 1981年 | 14651篇 |
| 1979年 | 30409篇 |
| 1978年 | 22026篇 |
| 1977年 | 18476篇 |
| 1976年 | 17400篇 |
| 1975年 | 18885篇 |
| 1974年 | 22617篇 |
| 1973年 | 22193篇 |
| 1972年 | 20886篇 |
| 1971年 | 19584篇 |
| 1970年 | 18620篇 |
| 1969年 | 17414篇 |
| 1968年 | 16158篇 |
排序方式： 共有10000条查询结果，搜索用时 6 毫秒
81.
82.
I. Fouzas C. Papanikolaou G. Katsanos N. Antoniadis N. Salveridis K. Karakasi S. Vasileiadou A. Fouza E. Mouloudi G. Imvrios V. Papanikolaou 《Transplantation proceedings》2019,51(2):416-420
Aims
Variations of the anatomy of donor hepatic arteries increase the number of arterial anastomoses during liver transplantation and, possibly, the incidence of hepatic artery thrombosis (HAT). In this study, we describe the arterial anatomic variations in liver grafts procured and transplanted by a single center in Greece, the techniques of arterial anastomosis, and their effect on the incidence of early HAT.Materials and Methods
From January 2013 to December 2017, the arterial anatomy of 116 grafts procured for liver transplantation were recorded, as well as the technique of arterial anastomosis and the incidence of early hepatic artery thrombosis (HAT <30 days).Results
A single hepatic artery was recorded in 72.41% of the procured grafts, an aberrant left hepatic artery (accessory or replaced) in 18 grafts (15.52%), and an aberrant right hepatic artery (accessory or replaced) in 17 grafts (14.66%), while other variations were observed in less than 1% of the procured livers. Of the 116 primary liver transplantations, 6 patients (5.17%) developed early HAT <30 days. Two of these patients (1.72%) had 1 anastomosis of the hepatic artery and 4 (3.45%) had 2 anastomoses due to anatomic variations.Conclusions
Anatomic variations of the hepatic artery in liver grafts is a common finding and increase the incidence of early HAT but not to a degree to make these grafts unusable. 相似文献83.
A. Guerrero Gómez N. González Jaramillo J.A. Castro Pérez 《Revista espa?ola de anestesiología y reanimación》2019,66(1):10-17
Introduction
The fast track / ultra-fast-track protocols are techniques used to optimise the patient care process and a quick recovery after cardiac surgery. They are one of the mainstays of efficient practice. With their use, the length of hospital and intensive care unit (ICU) stays are reduced, with a direct impact on costs and the quality of the health service.Objective
To compare the length of stay in the ICU, length of hospital stay, and post-operative mortality in ultra-fast-track extubated (uFTE) patients and those with conventional extubation (CE) after cardiac surgery.Methods
Longitudinal, analytical, retrospective study was conducted, with the period between the time of surgery and discharge being included as the study period.Results
A total of 396 patients older than 18 years who required cardiac surgery were included, of whom 207 patients had (uFTE) and 189 had CE. Although the groups were not comparable due to the statistical differences found, when performing the multivariate adjustment, uFTE maintained its statistical independence and was associated with lower cardiovascular morbidity, such as myocardial ischaemia (95% CI: 0.37-0.86; P = .01) and lower post-surgical vasopressor requirement (95% CI: 0.18-0.49; P < .01). No significant differences were found in the length of hospital stay, ICU stay, or post-operative mortality in the ICU.Conclusion
Implementing the uFTE strategy, decreases cardiovascular morbidity and vasopressor requirement. The change to uFTE should be accompanied by changes in models and practices in patient recovery to standardised protocols. This study shows that uFTE did not reduce the length of ICU stay, hospital stay, or mortality. 相似文献84.
85.
86.
Saisanjana Kalagara Adam E.M. Eltorai J. Mason DePasse Alan H. Daniels 《The spine journal》2019,19(1):182-185
BACKGROUND
Online physician rating websites are increasingly used by patients to evaluate their doctors. The purpose of this investigation was to evaluate factors associated with better spine surgeon ratings.METHODS
Orthopedic spine surgeons were randomly selected from the North American Spine Society directory utilizing a random number generator. Surgeon profiles on three physician rating websites, namely, www.HealthGrades.com, www.Vitals.com, and www.RateMDs.com, were analyzed to gather qualitative and quantitative data on patients’ perceptions of the surgeons. Independent variables from the websites were analyzed in relation to overall physician or patient satisfaction rating. Comments were coded by subject into following three categories: professional competence, bedside manner, and practice characteristics.RESULTS
A total of 250 surgeons were evaluated, and 92% (n=230) of these doctors had at least one rating among the three websites. The surgeons with a higher average rating had significantly better trust (p<.01), scheduling (p<.01), staff (p<.01), helpfulness (p<.01), and punctuality (p<.01) scores but significantly less experience (p<.05). A linear regression model for the average rating of each surgeon (R2 value=0.754) yielded only following three significant variables: trustworthiness (p<.01), experience match (p<.05), and the average number of negative comments on surgeon's professional competence (p<.05). Trustworthiness (β=0.749) was the strongest predictor variable of physician rating, followed by the number of negative professional competence comments (β=?0.132) and experience match (β=?0.112).CONCLUSIONS
This investigation assessed spine surgeon online patient ratings and categorized factors that patients associate with quality care. Trustworthiness was the most significant predictor of positive ratings, whereas ease of scheduling, quality of staff, helpfulness, and punctuality were also associated with higher patient ratings. Understanding what patients value may help optimize care of spine surgery patients. 相似文献87.
88.
89.
90.
C. Jacquet F. Goehringer E. Baux J.A. Conrad M.O. Ganne Devonec J.L. Schmutz G. Mathey H. Tronel T. Moulinet I. Chary-Valckenaere T. May C. Rabaud 《Médecine et maladies infectieuses》2019,49(2):112-120