全文获取类型
收费全文 | 139690篇 |
免费 | 9981篇 |
国内免费 | 3726篇 |
专业分类
耳鼻咽喉 | 3651篇 |
儿科学 | 3033篇 |
妇产科学 | 2235篇 |
基础医学 | 6973篇 |
口腔科学 | 4729篇 |
临床医学 | 14772篇 |
内科学 | 18456篇 |
皮肤病学 | 1966篇 |
神经病学 | 5472篇 |
特种医学 | 3896篇 |
外国民族医学 | 24篇 |
外科学 | 33483篇 |
综合类 | 20091篇 |
现状与发展 | 19篇 |
一般理论 | 6篇 |
预防医学 | 10288篇 |
眼科学 | 5588篇 |
药学 | 8120篇 |
220篇 | |
中国医学 | 3258篇 |
肿瘤学 | 7117篇 |
出版年
2024年 | 477篇 |
2023年 | 3241篇 |
2022年 | 5520篇 |
2021年 | 7033篇 |
2020年 | 6838篇 |
2019年 | 5788篇 |
2018年 | 5509篇 |
2017年 | 4964篇 |
2016年 | 5239篇 |
2015年 | 5122篇 |
2014年 | 10015篇 |
2013年 | 9797篇 |
2012年 | 8154篇 |
2011年 | 8632篇 |
2010年 | 6954篇 |
2009年 | 6635篇 |
2008年 | 6381篇 |
2007年 | 6360篇 |
2006年 | 5569篇 |
2005年 | 4963篇 |
2004年 | 4172篇 |
2003年 | 3464篇 |
2002年 | 2832篇 |
2001年 | 2673篇 |
2000年 | 2213篇 |
1999年 | 1918篇 |
1998年 | 1682篇 |
1997年 | 1499篇 |
1996年 | 1169篇 |
1995年 | 1075篇 |
1994年 | 928篇 |
1993年 | 734篇 |
1992年 | 718篇 |
1991年 | 650篇 |
1990年 | 507篇 |
1989年 | 489篇 |
1988年 | 467篇 |
1987年 | 437篇 |
1986年 | 384篇 |
1985年 | 414篇 |
1984年 | 344篇 |
1983年 | 225篇 |
1982年 | 263篇 |
1981年 | 207篇 |
1980年 | 167篇 |
1979年 | 129篇 |
1978年 | 104篇 |
1977年 | 91篇 |
1976年 | 77篇 |
1975年 | 54篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Day-only admissions for surgery are strongly encouraged, in an effort to keep costs down. Varicose vein surgery has been considered too major for day-only management despite the fact that there have been studies from overseas showing that it can be done with a morbidity comparable to inpatient surgery. The morbidity of day-only surgery for varicose veins (both long and short saphenous procedures) was assessed and compared with the results of inpatient surgery. Patients were also asked whether they were satisfied with the surgery being done this way. There were 165 consecutive patients available for study, 64 day-only and 101 inpatient. All patients attending Shellharbour Hospital, Shellharbour, had surgery done as day-only (as it was a morning list and allowed adequate time for recovery). Patients attending Bulli Hospital, Bulli, had surgery done as an inpatient (afternoon list). All surgery was performed by one surgeon. There was no difference (Chi-squared) in the age distribution (mean 48 years for day-only, 51 years for inpatient) or sex proportion in either group (Chi-squared test of proportions with continuity correction). Assessment of the results was done by review of the surgeon's notes, as well as telephone interviews for day-only subjects. The complication rate in both groups was similar. Wound problems represented the main complication with an incidence of 10.5% in each group. There was one deep venous thrombosis (DVT) in each group (diagnosed by duplex scan). Response to the telephone interview suggested that most patients were happy to have the surgery done as a day-only procedure. Sixty-nine per cent responded that they would have it done this way again and 76% were satisfied with the result of the surgery. This study confirms the results of overseas studies, in that varicose vein surgery can be performed as day-only procedures with a complication rate similar to inpatient procedures and with a high degree of patient satisfaction. It is suggested that this should be used as the method of choice for the majority of patients requiring varicose vein surgery. 相似文献
102.
目的 探讨膀胱前间隙炎性假瘤的临床病理特征及发病因素,以提高对本病的认识。方法 复习3例膀胱前间隙炎性假瘤的临床特征、组织病理学、免疫表型及相关文献。结果 3例患者均为女性,均为输卵管结扎术后1~2年发现膀胱前间隙炎性假瘤,CT及B超提示膀胱前壁肿块,但膀胱黏膜光滑。术中发现肿块位于膀胱前间隙并累及膀胱前壁。病理检查:眼观为灰白色质韧的结节状肿块,镜下见炎性假瘤的病理特征及不同程度炎症背景,有组织疏松区、黏液样区、部分区域梭形细胞和纤维母细胞排列杂乱,细胞较大,光镜检查时易误诊为肉瘤,但缺乏核异型。3例均成功行肿块连同部分膀胱壁切除术,随访3~5年无复发。结论 膀胱前间隙炎性假瘤形态上需与软组织肉瘤、结节性筋膜炎、术后梭形细胞结节、间质性膀胱炎等疾病相鉴别,既往输卵管结扎术和感染可能是其重要的致病因素。 相似文献
103.
Jungsun Park MD PhD Naomi Hisanaga MD Yangho Kim MD MPH 《American journal of industrial medicine》2009,52(8):625-632
Many corporations move their manufacturing facilities or technologies from developed to developing countries. Stringent regulations have made it costly for industries to operate in developed, industrialized countries. In addition, labor costs are high in these countries, and there is increasing awareness among the general public of the health risks associated with industry. The relocation of hazardous industries to developing countries is driven by economic considerations: high unemployment, a cheaper labor force, lack of regulation, and poor enforcement of any existing regulations make certain countries attractive to business. The transfer of certain industries from Japan to Korea has also brought both documented occupational diseases and a new occupational disease caused by chemicals without established toxicities. Typical examples of documented occupational diseases are carbon disulfide poisoning in the rayon manufacturing industry, bladder cancer in the benzidine industry, and mesothelioma in the asbestos industry. A new occupational disease due to a chemical without established toxicities is 2‐bromopropane poisoning. These examples suggest that counter‐measures are needed to prevent the transfer of occupational health problems from a developed to a developing country. Corporate social responsibility should be emphasized, close inter‐governmental collaboration is necessary and cooperation among non‐governmental organizations is helpful. Am. J. Ind. Med. 52:625–632, 2009. © 2009 Wiley‐Liss, Inc. 相似文献
104.
P. O. Berberat H. Ingold A. Gulbinas J. Kleeff M. W. Müller C. Gutt M. Weigand H. Friess M. W. Büchler 《Journal of gastrointestinal surgery》2007,11(7):880-887
Concepts in “fast-track” surgery, which provide optimal perioperative care, have been proven to significantly reduce complication
rates and decrease hospital stay. This study explores whether fast-track concepts can also be safely applied and improve the
outcomes of major pancreatic resections. Perioperative data from 255 consecutive patients, who underwent pancreatic resection
by means of fast-track surgery in a high-volume medical center, were analyzed using univariate and multivariate models. Of
the 255 patients, 180 received a pancreatic head resection and 51 received distal, 15 received total, and 9 received segmental
pancreatectomies. The patients were discharged on median day 10 with a 30-day readmission rate of 3.5%. The in-hospital mortality
was 2%, whereas medical and surgical morbidities were 17 and 25%, respectively. Fast-track parameters, such as first stools,
normal food, complete mobilization, and return to normal ward, correlated significantly with early discharge (p < 0.05). Patients’ age, operation time, and early extubation proved to be independent factors of early discharge, shown through
multivariate analysis (odds ratio: 4.0, 2.0, and 2.8, respectively; p < 0.05). Low readmission, mortality, and morbidity rates demonstrate that fast-track surgery is in fact feasible and safe
and promotes earlier discharge without compromising patient outcomes. 相似文献
105.
老年患者尿路感染菌群分布及其耐药性分析 总被引:3,自引:0,他引:3
目的 :了解老年患者尿路感染致病菌的菌群分布及其对抗生素的耐药情况 ,为临床合理使用抗生素提供依据。方法 :收集湖北省 15所三级甲等医院 2 0 0 2年尿路感染老年患者清洁中段尿细菌培养分离的 5 34株致病菌 ,对其进行耐药性监测。药敏采用K B法 ,用WHONET 5软件进行数据分析。结果 :共收集致病菌 5 34株 ,其中革兰阴性菌 4 0 9株 (76 .6 % ) ,革兰阳性菌 12 5株(2 3.4 % )。革兰阴性菌中大肠埃希菌检出率最高 (2 6 4株 ,4 9.4 % ) ,其次为克雷白杆菌 (44株 ,8.2 % )。 16 .7%的大肠埃希菌和 2 2 .7%的克雷白杆菌产超广谱 β 内酰胺酶。亚胺培南、阿米卡星、头孢他啶对革兰阴性菌的抗菌活性最强 ,而革兰阴性菌对环丙沙星、庆大霉素、哌拉西林的耐药率均在 5 0 %以上。革兰阳性菌以肠球菌最多见 (6 4株 ,12 % ) ,其次为葡萄球菌属 (43株 ,8.1% )。革兰阳性菌对SMZco、红霉素等的耐药率均在 4 0 %以上 ,但对万古霉素均敏感。结论 :老年患者尿路感染以革兰阴性菌为优势菌株 ,且耐药性日益严重 ,对亚胺培南、阿米卡星、头孢他啶最为敏感。革兰阳性菌宜以万古霉素为首选。 相似文献
106.
Björn-Christian Link Emre F. Yekebas Dean Bogoevski Asad Kutup Gerhard Adam Jakob R. Izbicki Gerrit Krupski 《Journal of gastrointestinal surgery》2007,11(2):166-170
Symptomatic biliary leakage following major upper abdominal surgery is a severe complication resulting in increased morbidity
and mortality. Treatment options usually include either endoscopic intervention or surgical revision. These options may be
burdened by a high perioperative risk for the patient (e.g., patients with severe disease) or simply may not be possible (e.g.,
nonpreserved gastroduodenal passage). In the past, percutaneous transhepatic cholangiodrainage did only seem to be a viable
option for patients with dilated bile ducts. Here, we present our experience in a consecutive series of patients with symptomatic
biliary leakage following major upper abdominal surgery and without dilation of the biliary system that underwent percutaneous
transhepatic cholangiodrainage. Percutaneous transhepatic cholangiodrainage was feasible in 15 of 18 patients (83.3%). The
procedure was technically not possible in three patients (16.7%). In 10 of the 15 patients (66.6%) with feasible percutaneous
transhepatic cholangiodrainage, biliary leakage was definitely controlled without the need for surgical revision. Depending
on the experience with the interventional procedure, percutaneous transhepatic cholangiodrainage should be considered as an
alternative for treatment of symptomatic biliary leakage instead of immediate reoperation.
Presented at the Digestive Disease Week 2005 (DDW), Chicago, IL, May 14–19, 2005 (poster presentation). 相似文献
107.
108.
Hans-Holger Capelle Johannes C W?hrle Ralf Weigel Hansj?rg B?zner Eva Grips Joachim K Krauss 《Movement disorders》2004,19(10):1202-1208
It is well known that brain injury or central traumatic lesions may result in the subsequent appearance of movement disorders such as dystonia or tremor. The concept that peripheral lesions to neural structures may be involved in the pathogenesis of movement disorders has been discussed controversely but has gained more widespread acceptance only recently. Here, we report on 6 patients who developed movement disorders after spinal disc surgery. The movement disorders became manifest with a delay of 1 day to 12 months after surgery. Of the six patients, 4 underwent cervical disc surgery, and 2 patients were operated on for lumbar disc herniation; 2 patients presented with paroxysmal kinesigenic segmental dystonia, 1 patient with focal dystonia, 2 with unilateral tremor, and 1 with bilateral tremor. The appearance of the movement disorder was associated with persistent dermatomal or segmental pain. In all patients, the anatomic distribution of the movement disorder was related to the nerve root or spinal segment of the corresponding disc level and the manifestation was in close temporal relation to the surgery. We conclude that spinal disc surgery may be another, thus far neglected, cause for movement disorders. The postoperative pain syndrome in all patients should be considered as an important factor of pathogenesis. Overall, movement disorders associated with disc surgery appear to be rare, yet they may cause significant discomfort to the affected individual. 相似文献
109.
110.
S. Loughran N. Calder F.B. MacGregor P. Carding K. MacKenzie 《Clinical otolaryngology》2005,30(1):42-47
Objectives: To assess whether proposed voice and quality of life (QoL) outcome measures were likely to be acceptable to patients previously treated for early glottic cancer by either radiotherapy or endoscopic resection, as well as looking for differences in QoL and voice between treatments. Design: Questionnaire‐based cohort study. Setting: Secondary care, three centres. Participants: All patients treated for T1a or in situ glottic carcinoma between 1997 and 2003. Fifty‐three patients were identified; those who had undergone salvage surgery or radiotherapy were excluded. A proportion refused to participate or could not be contacted and two patients had died of unrelated causes. Thirty‐six patients completed the trial with 18 from each treatment arm. Main outcome measures: Quality of voice as assessed by three questionnaires, Voice Handicap Index (VHI), Vocal Performance Questionnaire (VPQ), Voice Symptom Score (VoiSS) and perceptual analysis of voice by Grade, Roughness, Breathiness, Asthenia and Strained (GRBAS) assessment of vocal recordings. Quality of life as assessed by the Hospital Anxiety and Depression Scale (HADS), University of Washington Quality of Life Questionnaire (UW‐QoL), and the Functional Assessment of Cancer Therapy (FACT) questionnaire. Results: All patients included in the trial were able to complete the questionnaires; however, 19% required assistance of some kind. GRBAS assessment showed no difference between groups for any criteria. All QoL questionnaires gave equivalent good scores. All of the voice questionnaires showed no statistical difference between groups except for the emotional subscale of the VoiSS which showed a significantly better score for the radiotherapy arm (P = 0.04). Conclusion: All outcome measures were applicable and acceptable to the patient group. Overall QoL and voice appears similar despite treatment arm, apart from the emotional subscale of the VoiSS. A randomized controlled trial is required to further assess this question. 相似文献