全文获取类型
收费全文 | 206267篇 |
免费 | 5246篇 |
国内免费 | 1121篇 |
专业分类
耳鼻咽喉 | 2889篇 |
儿科学 | 7545篇 |
妇产科学 | 5961篇 |
基础医学 | 26811篇 |
口腔科学 | 5930篇 |
临床医学 | 16804篇 |
内科学 | 36514篇 |
皮肤病学 | 4877篇 |
神经病学 | 12256篇 |
特种医学 | 11197篇 |
外国民族医学 | 102篇 |
外科学 | 30641篇 |
综合类 | 2833篇 |
现状与发展 | 1篇 |
一般理论 | 5篇 |
预防医学 | 17053篇 |
眼科学 | 4516篇 |
药学 | 14656篇 |
5篇 | |
中国医学 | 841篇 |
肿瘤学 | 11197篇 |
出版年
2021年 | 663篇 |
2018年 | 3917篇 |
2017年 | 4248篇 |
2016年 | 3537篇 |
2015年 | 5408篇 |
2014年 | 4998篇 |
2013年 | 4011篇 |
2012年 | 10708篇 |
2011年 | 5641篇 |
2010年 | 2804篇 |
2009年 | 4310篇 |
2008年 | 2647篇 |
2007年 | 3327篇 |
2006年 | 3584篇 |
2005年 | 11694篇 |
2004年 | 12993篇 |
2003年 | 8676篇 |
2002年 | 3828篇 |
2001年 | 4727篇 |
2000年 | 2013篇 |
1999年 | 6094篇 |
1998年 | 691篇 |
1992年 | 6955篇 |
1991年 | 7178篇 |
1990年 | 7407篇 |
1989年 | 7026篇 |
1988年 | 6532篇 |
1987年 | 6288篇 |
1986年 | 5997篇 |
1985年 | 5268篇 |
1984年 | 3616篇 |
1983年 | 2926篇 |
1982年 | 1009篇 |
1981年 | 779篇 |
1980年 | 845篇 |
1979年 | 3840篇 |
1978年 | 2368篇 |
1977年 | 1793篇 |
1976年 | 1566篇 |
1975年 | 2483篇 |
1974年 | 3110篇 |
1973年 | 2740篇 |
1972年 | 2763篇 |
1971年 | 2746篇 |
1970年 | 2561篇 |
1969年 | 2467篇 |
1968年 | 2239篇 |
1967年 | 2168篇 |
1966年 | 1901篇 |
1965年 | 1132篇 |
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
11.
12.
Byonggu An Yumi Zen Hiroya Akabori Naomi Kitamura Hiroyuki Ohta Akinori Otsuki Hiroo Mizuta Tomoyuki Tsujikawa Eiji Mekata 《Asian journal of endoscopic surgery》2021,14(1):120-123
A Bochdalek hernia (BH) is a congenital abnormality with incomplete closure of the diaphragm. It is usually manifested in infants but rarely in adults. Here, we report an adult patient with gastric volvulus and giant BH that were safely repaired by endoscopic reduction and elective laparoscopic surgery, respectively. A 79-year-old woman presented with left upper abdominal pain but no history of trauma. CT revealed a giant BH with gastric volvulus. After emergency endoscopic reduction of the volvulus, elective laparoscopic repair of the BH was performed. The 8 × 8-cm defect was repaired with interrupted nonabsorbable sutures and a mesh. The patient's postoperative course was uneventful, and no complications or recurrence were observed in the 6 months that followed. 相似文献
13.
The inferior alveolar nerve and facial nerve are the two most important nerves in the dental and maxillofacial region. The injury to them is one of the major postoperative complications after alveolar surgery and orthognathic surgery. However, recovering the nerve function after injury takes a long time and the recovery effect tends to be unsatisfactory. In recent years, an intensively investigated technique, low level laser which has been applying in assisting the recovery of nerve function, has been gradually proved to be effective in clinically treating postoperative nerve injury. In this article we review in terms of the mechanisms involved in low level laser-assisted functional restoration of nerve injury and its clinical application in the recovery of nerve function in the dental and maxillofacial area as well. 相似文献
14.
Bj?rn Stessel Audrey A. Fiddelers Elbert A. Joosten Daisy M.N. Hoofwijk Hans-Fritz Gramke Wolfgang F.F.A. Buhre 《Medicine》2015,94(39)
Traditionally, major complications and unanticipated admission/readmission rates were used to assess outcome after day surgery. However, in view of the relative absence of major complications the quality of recovery (QOR) should be considered one of the principal endpoints after day surgery. In our study, the level of QOR is defined by a combination of the Global Surgical Recovery (GSR) Index and the Quality of Life (QOL).The aim of this study was to analyze prevalence and predictors of QOR after day surgery on the fourth postoperative day.Elective patients scheduled for day surgery from November 2008 to April 2010 were enrolled in a prospective cohort study. Outcome parameters were measured by using questionnaire packages at 2 time points: 1 week preoperatively and 4 days postoperatively. Primary outcome parameter is the QOR and is defined as good if the GSR index >80% as well as the postoperative QOL is unchanged or improved as compared with baseline. QOR is defined as poor if both the GSR index ≤80% and if the postoperative QOL is decreased as compared with baseline. QOR is defined as intermediate in all other cases. Three logistic regression analyses were performed to determine predictors for poor QOR after day surgery.A total of 1118 patients were included. A good QOR was noted in 17.3% of patients, an intermediate QOR in 34.8%, and a poor QOR in 47.8% 4 days after day surgery. The best predictor for poor QOR after day surgery was type of surgery. Other predictors were younger age, work status, and longer duration of surgery. A history of previous surgery, expected pain (by the patient) and high long-term surgical fear were significant predictors of poor QOR in only 1 of 3 prediction models.The QOR at home 4 days after day surgery was poor in the majority of patients and showed a significant procedure-specific variation. Patients at risk for poor QOR can be identified during the preoperative period based on type of surgery, age, work status, and the duration of the surgery. 相似文献
15.
Miguel A. Sanz Pau Montesinos Haesook T. Kim Guillermo J. Ruiz-Argüelles María S. Undurraga María R. Uriarte Lem Martínez Rafael H. Jacomo Homero Gutiérrez-Aguirre Raul A. M. Melo Rosane Bittencourt Ricardo Pasquini Katia Pagnano Evandro M. Fagundes Edo Vellenga Alexandra Holowiecka Ana J. González-Huerta Pascual Fernández Javier De la Serna Salut Brunet Elena De Lisa José González-Campos José M. Ribera Isabel Krsnik Arnold Ganser Nancy Berliner Raul C. Ribeiro Francesco Lo-Coco Bob L?wenberg Eduardo M. Rego 《Annals of hematology》2015,94(8):1347-1356
16.
17.
目的:统计分析中国县级及以上医疗机构青光眼亚专科建设、诊疗设备配备和服务提供情况,为进 一步推动我国青光眼防治工作提供理论依据。方法:调查研究。2015年对全国提供眼科服务的县级 及以上医疗机构通过网上填报的方式进行普查,采用描述性统计方法,对我国县级及以上医疗机构 青光眼亚专科建设、诊疗设备配备和服务提供情况进行系统整理和统计分析。结果:本次调查覆盖 全国6 341家县级及以上医疗机构,其中设立青光眼亚专科的医疗机构有672家(10.60%)。在青光眼 检查和治疗相关设备中,视力表配置率最高(99.30%),平均每家医疗机构配置3.28台;超声生物显 微镜配置率最低(11.50%),平均每家医疗机构配置0.13台。眼压测量、白内障手术和小梁切开术是 青光眼主要的诊疗服务类型。结论:我国县级及以上医疗机构青光眼亚专科建设亟待加强,诊疗设 备配备不全,诊疗服务能力需要全面提升。 相似文献
18.
19.
20.
About 10% of patients with Lyme disease continue to experience musculoskeletal pain and cognitive dysfunction after recommended antibiotic treatment. This condition is called post-Lyme disease syndrome (PLDS) or post-treatment Lyme disease syndrome. These two terms are used interchangeably. The pathogenesis of PLDS has been controversial. The hypothesis that patients with PLDS may harbor hidden reservoirs of Borrelia burgdorferi after their initial antibiotic treatment is difficult to accept. The prospective, double-blind studies contradict this point of view. Also, recently published research applying xenodiagnosis to PLDS supports the opinion that PLDS most likely has an autoimmune background. Lengthy courses of antibiotics are not justified in patients with PLDS because of the lack of benefit, and they are fraught with hazards. Most patients with PLDS recover from persistent symptoms with time. However, it can take months before they feel completely well. 相似文献