全文获取类型
收费全文 | 546篇 |
免费 | 17篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 18篇 |
妇产科学 | 5篇 |
基础医学 | 37篇 |
口腔科学 | 5篇 |
临床医学 | 23篇 |
内科学 | 190篇 |
皮肤病学 | 6篇 |
神经病学 | 27篇 |
特种医学 | 30篇 |
外科学 | 100篇 |
综合类 | 11篇 |
预防医学 | 32篇 |
眼科学 | 7篇 |
药学 | 31篇 |
肿瘤学 | 33篇 |
出版年
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 20篇 |
2020年 | 7篇 |
2019年 | 11篇 |
2018年 | 13篇 |
2017年 | 4篇 |
2016年 | 5篇 |
2015年 | 12篇 |
2014年 | 11篇 |
2013年 | 18篇 |
2012年 | 36篇 |
2011年 | 35篇 |
2010年 | 29篇 |
2009年 | 18篇 |
2008年 | 38篇 |
2007年 | 28篇 |
2006年 | 14篇 |
2005年 | 14篇 |
2004年 | 21篇 |
2003年 | 22篇 |
2002年 | 7篇 |
2001年 | 7篇 |
2000年 | 11篇 |
1999年 | 7篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1994年 | 2篇 |
1992年 | 15篇 |
1991年 | 22篇 |
1990年 | 23篇 |
1989年 | 20篇 |
1988年 | 21篇 |
1987年 | 8篇 |
1986年 | 8篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1982年 | 2篇 |
1980年 | 2篇 |
1978年 | 1篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1974年 | 5篇 |
1973年 | 10篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1969年 | 1篇 |
1967年 | 3篇 |
1965年 | 3篇 |
排序方式: 共有568条查询结果,搜索用时 15 毫秒
91.
Methadyl acetate was metabolized by microsomal preparations of rat liver to yield nor-methadyl acetate and 6-(dimethylamino)-4,4-diphenyl-3-heptanol. The identification and separation of these three compounds was established by TLC, using iodoplatinate spray as a visualizing agent. 相似文献
92.
93.
Eight types of rare clavicular lesions comprising 41 cases with their treatment and results are presented. Total claviclectomy was performed in ten cases of pyogenic osteomyelitis with no resultant functional disability to the patient. We advocate this as the treatment of choice. 相似文献
94.
Joseph Meserve Satimai Aniwan Jenna L. Koliani-Pace Preeti Shashi Aaron Weiss David Faleck Adam Winters Shreva Chablaney Gursimran Kochhar Brigid S. Boland Siddharth Singh Robert Hirten Eugenia Shmidt Justin G. Hartke Prianka Chilukuri Matthew Bohm Sashidhar Varma Sagi Monika Fischer Parambir S. Dulai 《Clinical gastroenterology and hepatology》2019,17(8):1533-1540.e2
95.
96.
97.
The analgesic effects of preemptive gabapentin in patients undergoing surgery for brachial plexus injury--a preliminary study 总被引:2,自引:0,他引:2
Prabhakar H Arora R Bithal PK Rath GP Dash HH 《Journal of neurosurgical anesthesiology》2007,19(4):235-238
There are reports indicating that gabapentin may have place in the treatment of postoperative pain. No study has evaluated the effects of gabapentin on acute, postoperative pain in patients undergoing surgery for brachial plexus injuries. In this preliminary study, we evaluated gabapentin as preemptive analgesic for intraoperative period and during the acute postoperative period at rest and during movement. Twenty consecutive adult patients undergoing surgery for brachial plexus injury were enrolled for the study. Patients randomly received either oral gabapentin 800 mg or placebo capsules 2 hours before surgery. General anesthesia was induced and maintained with propofol, at bispectral index value between 40 and 60. Intraoperative fentanyl and propofol requirements were noted. Postoperatively, all patients were alert and pain was assessed using visual analog scale (VAS) for 24 hours, both during rest and movement. Whenever VAS score was more than 50 or on patients' demand, ketorolac 30 mg was given as rescue analgesic. The demographics, duration of surgery, and propofol consumption in both groups were comparable. Intraoperative and postoperative heart rate and mean blood pressure were also comparable. Significant difference was noted in intraoperative fentanyl consumption (P=0.03), total dose of rescue analgesic (P=0.004), and VAS score at rest and movement, between the 2 groups; less in gabapentin group as compared with placebo group (P=0.01 and 0.04, at rest and movement, respectively). A single oral dose of gabapentin 800 mg, as preemptive analgesic in patients undergoing surgery for brachial plexus injury is found to be an effective adjunct to intraoperative and postoperative pain. Pain is reduced not only at rest but also during movement. 相似文献
98.
Various strategies have been studied to reduce the discomfort of rocuronium pain. These studies have shown fentanyl and lidocaine
to be effective in reducing the incidence of pain on rocuronium injection. This prospective, randomized, and double-blind
study was carried out on 80 neurosurgical patients for whom pain on rocuronium injection was assessed after pretreatment with
lidocaine, fentanyl, sufentanil, or normal saline. The 80 neurosurgical patients were randomly allocated to anyone of the
groups to receive lidocaine, fentanyl, sufentanil, or normal saline prior to being given rocuronium. The patients were asked
about any discomfort in the hand, and also to rank that discomfort on a 5-point scale. In the normal saline group, the incidence
of pain was 95%, of which 90% had very severe pain. In the lidocaine group, only 10% of patients reported pain, which was
mild in nature. In the fentanyl group, 95% of patients had pain, of whom 25% had severe to very severe pain. In the sufentanil
group, 85% of patients reported pain, of whom 25% fell into the severe to very severe group. We found that lidocaine was best
at decreasing the incidence of pain on intravenous (i.v.) injection of rocuronium. Although the incidence of pain on injection
of rocuronium with both fentanyl and sufentanil was high, the intensity was definitely reduced, with most patients falling
in the mild pain group. 相似文献
99.
BACKGROUND: Various imaging findings of cerebral sino-venous thrombosis (CSVT) have been described on magnetic resonance venography (MRV). OBJECTIVE: The purpose of this study was to evaluate the significance of visualization of the arterial system on cerebral MRV, also described as arterial contamination, as an indirect sign of CSVT. METHODS: Forty patients with a clinical suspicion of venous sinus thrombosis underwent MR imaging of the brain, followed by MRV sequence, based on 2D time of flight technique in the coronal oblique plane. Patient's clinical symptoms and signs were noted with particular interest for papilloedema. Twenty-seven patients were diagnosed to have cerebral venous thrombosis on MRV, and of these, arterial contamination was visualized in 16 patients. In the remaining 13 cases, in which there was no evidence of venous sinus thrombosis, arterial contamination was absent. The sensitivity of this finding was 59.25% (n = 16/27), specificity was 100%, positive predictive value was 100% and negative predictive value was 54.2%. Of these 16 patients with arterial contamination, 12 patients had evidence of increased intracranial pressure in the form of papilloedema. CONCLUSION: Visualization of the arterial system is a useful indirect sign of CSVT, and may be an indicator of increased intracranial pressure in these patients. 相似文献
100.
Rakesh Kochhar Usha Dutta Kuchhangi Sureshchandra Poornachandra Kim Vaiphei Suraj Bhagat Birinder Nagi Kartar Singh 《Journal of medical toxicology》2010,6(3):301-306
Aluminum phosphide (AlP) is a lethal solid fumigant pesticide which has been recently linked to esophageal stricture formation. This paper aims to study the clinical profile and response to treatment of AlP-induced esophageal strictures. Data on all patients of AlP-induced strictures seen between January 2004 and June 2008 were retrieved and analyzed for clinical parameters and response to endoscopic dilation. Each patient underwent barium swallow to define the site and length of stricture and then was dilated endoscopically. Twelve patients of AlP-induced esophageal stricture (seven males) with a mean age of 26.83?±?8.43 years were evaluated. They had consumed one to three AlP tablets, 4–156 weeks before reporting to us. They had onset of dysphagia within 2 to 8 weeks of ingestion of AlP. Of 14 strictures in 12 patients, seven were in upper third, two in middle third, and five in lower third of esophagus with a mean length of 1.96?±?0.75 cm. Nine patients responded to dilation requiring 5.56?±?2.65 dilations. Four patients were given intralesional steroids to augment the effect of dilation. Three patients failed and were operated upon. All patients remained symptom free over a follow-up of 3–30 (15.67?±?9.41)?months. AlP-induced esophageal strictures can be dilated endoscopically in a majority of patients; however, 25% of them require surgical intervention. AlP-induced esophageal strictures, thus, behave like caustic-induced strictures. 相似文献