全文获取类型
收费全文 | 506篇 |
免费 | 20篇 |
国内免费 | 9篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 3篇 |
妇产科学 | 19篇 |
基础医学 | 60篇 |
口腔科学 | 3篇 |
临床医学 | 44篇 |
内科学 | 199篇 |
皮肤病学 | 6篇 |
神经病学 | 8篇 |
特种医学 | 17篇 |
外科学 | 51篇 |
综合类 | 4篇 |
预防医学 | 18篇 |
眼科学 | 4篇 |
药学 | 46篇 |
肿瘤学 | 47篇 |
出版年
2023年 | 5篇 |
2022年 | 3篇 |
2021年 | 19篇 |
2020年 | 7篇 |
2019年 | 15篇 |
2018年 | 19篇 |
2017年 | 10篇 |
2016年 | 13篇 |
2015年 | 13篇 |
2014年 | 12篇 |
2013年 | 35篇 |
2012年 | 36篇 |
2011年 | 44篇 |
2010年 | 30篇 |
2009年 | 25篇 |
2008年 | 37篇 |
2007年 | 44篇 |
2006年 | 36篇 |
2005年 | 23篇 |
2004年 | 28篇 |
2003年 | 25篇 |
2002年 | 16篇 |
2001年 | 3篇 |
2000年 | 3篇 |
1999年 | 11篇 |
1998年 | 5篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1994年 | 7篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1984年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有535条查询结果,搜索用时 125 毫秒
531.
Emmanuel Papandonakis Athanasios Tsoukas Stamatios Christakos 《Annals of noninvasive electrocardiology》1999,4(1):35-38
Backround: Prolongation of QT dispersion (QTD), defined as the difference between maximum and minimum QT intervals on surface ECG, has been proposed as a noninvasive arrythmogenic marker. The aim of this study was to estimate the value of QTD in identifing patients susceptible to ventricular fibrillation or ventricular tachycardia (VF/VT) after an acute myocardial infarction (AMI) and to evaluate the behavior of QTD in relation to the thrombolytic therapy. Methods: We studied 108 consecutive patients with AMI. All patients had a 12-lead surface ECG recorded upon admission and a second ECG 24 hours later. QT interval was measured from the onset of Q to the end of T in each of 12 standard ECG leads. QTD was the difference between the longest and shortest values of QT. All QTD measurements were corrected for heart rate (QTcD) using QTc values according to Bazzet formula. Results: Fifteen patients (13.8%) developed VF/VT in the first week after AMI (group 1A) and 93 patients (86.2%) did not have VF/NT (group 1B). QTD and QTcD values were significantly greater in group 1A in comparison to group 1B on admission and 24 hours later. Sixty-five patients (60%) received intravenous thrombolysis in the acute phase of AMI (group 2A) and 43 patients (40%) did not (group 2B). No significant difference in QTD and QTcD was observed in the first ECG on admission between the two groups. Conversely, QTD and QTcD were lower in group 2A patients in the second ECG 24 hours after admission. Conclusions: These results provide evidence that increased values of QTD are correlated well with occurrence of malignant ventricular arrhythmias after acute myocardial infarction while lower values associated with the thrombolytic therapy. A.N.E. 1999;4(1):35–38 相似文献
532.
533.
Angelos Daniilidis Sonia Charitidou Stamatios Petousis Chrysoula MargioulaSiarkou Anastasios Liberis Konstantinos Dinas 《Clinical Case Reports》2021,9(9)
Isolated tubal torsion is an unusual cause of acute abdominal pain in young sexually inactive patients. However, it should be still taken into account regarding the differential diagnosis of such conditions. 相似文献
534.
Theocharis Nikellis DMD Evangelia Lampraki DDS FACP Davide Romeo DDS PhD Alexandra Tsigarida DDS MS Abdul Basir Barmak MD MSc EdD Charikleia Malamou DDS MS Carlo Ercoli DDS MBA FACP Panos Papaspyridakos DDS MS PhD Elli Anna Kotsailidi DDS MS Konstantinos Chochlidakis DDS MS FACP 《Journal of prosthodontics》2023,32(3):214-220
535.