首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   121篇
  免费   8篇
儿科学   1篇
妇产科学   49篇
基础医学   28篇
临床医学   9篇
内科学   15篇
皮肤病学   3篇
神经病学   5篇
特种医学   1篇
外科学   3篇
综合类   1篇
一般理论   2篇
预防医学   5篇
药学   6篇
肿瘤学   1篇
  2021年   6篇
  2020年   7篇
  2019年   2篇
  2018年   3篇
  2017年   4篇
  2016年   2篇
  2015年   4篇
  2014年   2篇
  2013年   6篇
  2012年   8篇
  2011年   6篇
  2010年   3篇
  2009年   6篇
  2008年   14篇
  2007年   13篇
  2006年   11篇
  2005年   6篇
  2004年   7篇
  2003年   11篇
  2002年   4篇
  2001年   4篇
排序方式: 共有129条查询结果,搜索用时 31 毫秒
21.
This article describes the use of the fallopotorque catheter system for transcervical selective salpingography and tubal catheterization under fluoroscopic guidance for the diagnosis and treatment of obstruction of the proximal Fallopian tube. The technique of tubal perfusion pressure assessment during the procedure, using the same catheter system, is also described. The relative advantages of this method of selective salpingography and tubal catheterization are then discussed in the background of previously described techniques.  相似文献   
22.
23.
A core activity of evidence-based practice is the search for and appraisal of evidence on specific clinical issues. Clinicians vary in their competence in this process; we therefore developed a 16-item checklist for quality of content (relevance and validity) and presentation (useability, attribution, currency and contact details). This was applied to a set of 55 consecutive appraisals conducted by clinicians and posted at a web-based medical journal club site. Questions were well formulated in 51/55 (92%) of the appraisals. However, 22% of appraisals missed the most relevant articles to answer the clinical question. Validity of articles was well appraised, with methodological information and data accurately extracted in 84% and accurate conversion to clinically meaningful summary statistics in 87%. The appraisals were presented in a useable way with appropriate and clear bottom-lines stated in 95%. The weakest link in production of good-quality critical appraisals was identification of relevant articles. This should be a focus for evidence-based medicine and critical appraisal skills.  相似文献   
24.
A systematic review of studies evaluating the influence of outpatient (office) hysteroscopy on the outcome of the subsequent IVF cycle was conducted. MEDLINE, EMBASE, the Cochrane Library, National Research Register, ISI Conference Proceedings, ISRCTN Register and Meta-register were searched for randomized controlled trials (up to July 2007). All trials comparing the outcome of IVF treatment performed in patients who had outpatient hysteroscopy in the cycle preceding their IVF treatment with a control group in which hysteroscopy was not performed were included. Study selection, quality appraisal and data extraction were performed independently and in duplicate. Study authors were contacted for additional information. The main outcome measure was pregnancy rate. In total, 1691 participants were included in two randomized (n = 941) and three non-randomized controlled studies (n = 750). The quality of the studies was variable. Meta-analyses of the results of five studies showed evidence of benefit from outpatient hysteroscopy in improving the pregnancy rate in the subsequent IVF cycle (pooled relative risk = 1.75, 95% CI 1.51-2.03). The evidence from randomized trials was consistent with that from non-randomized controlled studies. Future robust randomized trials comparing outpatient hysteroscopy or mini-hysteroscopy with no intervention before IVF treatment would be a useful addition to further guide clinical practice.  相似文献   
25.
Background Interest in non-hormonal therapies for the treatment of menopausal symptoms has increased since the publication of adverse effects of estrogen replacement therapy. Objective To provide information on the efficacy of non-hormonal therapies for menopausal vasomotor symptoms based on evidence from published randomised controlled studies. Methods The Cochrane Database of Systematic Reviews (CDSR), MEDLINE, Alternative Therapies in Health and Medicine database (ATHMD) and Allied and Complementary Medicine database (AMED) were searched for randomised controlled trials in the English language reporting data on treatment of menopausal vasomotor symptoms. Trials including cancer breast patients were included. Results Our search identified 58 randomised controlled trials of which 11 involved the use of clonidine, six for SSRIs, four for gabapentin, seven for black cohosh, seven for red clover, 18 for phytoestrogens, two for ginseng, one for evening primrose, one for dong quai and one for vitamin E. Most trials had methodological deficiencies. Conclusion There is evidence that clonidine, paroxetine, venlafaxine, gabapentin and black cohosh may be beneficial in the treatment of menopausal vasomotor symptoms in some women. Current evidence does not support the use of fluoxetine, red clover, phytoestrogens, Ginseng, evening primrose, dong quai and vitamin E. The side effects profile of these therapies should be considered.  相似文献   
26.
BACKGROUND Reverse bevel(RB) needle is widely used for endoscopic ultrasound fine needle biopsy(EUS-FNB). A 3-plane symmetrical needle with Franseen geometry(FG) has recently become available.AIM To compare the clinical efficacy of FG to that of RB needle.METHODS A retrospective cohort study of all adult patients who underwent EUS-FNB for solid and mixed lesions either with 22 G RB needle or 22 G FG needle between January 2016 and February 2019 was undertaken. All cytology slides were reviewed by an independent gastrointestinal cytopathologist blinded to the needle used and the initial cytology report. The primary and secondary outcomes were to assess the sample adequacy using Euro-cytology criteria and the number of cell clusters, respectively.RESULTS Two hundred and twenty six procedures were included in the study. RB needle was used in 128 procedures and FG needle in 98 procedures. The baseline characteristics of both groups were comparable. On multivariable analysis, FG needle(P = 0.02) and location of the lesion(P 0.01) were independently associated with adequate tissue. Further, the use of FG needle(P = 0.04) and the size of the lesion(P = 0.02) were independently associated with acquisition of increased number of cell clusters.CONCLUSION FG needle is superior to RB needle in acquiring adequate tissue and attaining higher number of cell clusters for solid and mixed lesions.  相似文献   
27.
28.
29.
30.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号