全文获取类型
收费全文 | 480篇 |
免费 | 22篇 |
国内免费 | 6篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 21篇 |
妇产科学 | 24篇 |
基础医学 | 31篇 |
口腔科学 | 6篇 |
临床医学 | 34篇 |
内科学 | 81篇 |
皮肤病学 | 8篇 |
神经病学 | 18篇 |
特种医学 | 82篇 |
外科学 | 82篇 |
综合类 | 42篇 |
预防医学 | 18篇 |
眼科学 | 6篇 |
药学 | 20篇 |
肿瘤学 | 34篇 |
出版年
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 2篇 |
2018年 | 10篇 |
2017年 | 5篇 |
2016年 | 5篇 |
2015年 | 6篇 |
2014年 | 10篇 |
2013年 | 21篇 |
2012年 | 12篇 |
2011年 | 16篇 |
2010年 | 30篇 |
2009年 | 26篇 |
2008年 | 9篇 |
2007年 | 13篇 |
2006年 | 31篇 |
2005年 | 15篇 |
2004年 | 39篇 |
2003年 | 17篇 |
2002年 | 12篇 |
2001年 | 5篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 25篇 |
1997年 | 24篇 |
1996年 | 21篇 |
1995年 | 28篇 |
1994年 | 16篇 |
1993年 | 7篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 13篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 9篇 |
1985年 | 2篇 |
1984年 | 5篇 |
1983年 | 7篇 |
1982年 | 3篇 |
1981年 | 5篇 |
1980年 | 6篇 |
1978年 | 4篇 |
1977年 | 4篇 |
排序方式: 共有508条查询结果,搜索用时 15 毫秒
1.
2.
The first 150 words of the full text of this article appear below. Key points Coronary artery disease accounts for >30% ofdeaths in Western society. The diagnosis of myocardial infarctionshould be qualified by size, causation and time from occurrence. Mortalityis reduced by immediate or primary percutaneouscoronary intervention or thrombolysis within the first 24 hof onset of ST-segment elevation myocardial infarction. Strategiesto reduce platelet activation (glycoprotein IIb/IIIa receptorantagonists, or clopidogrel) are now recommended in the treatmentof high-risk non-ST-segment myocardial infarction/unstable angina. Elevatedserum troponins may be the result of non-ischaemic myocardialdamage, especially in critical illness.
Pathophysiology
Changes in the definition of terms relating to the diagnosisof myocardial infarction (MI) have evolved by better understandingof the pathophysiology culminating in the new term of acutecoronary syndrome (ACS). Figure 1 illustrates the processesthat occur in the development of an acute coronary event. 相似文献
3.
Serafim N. Nanas John N. Nanas Christos E. Charitos Alexandros Gougoulakis Konstantinos Makaritsis John Chatzigeorgiou Kiriaki Moussoutzani Maria I. Anastasiou-Nana Spyridon D. Moulopoulos 《World journal of surgery》1997,21(3):318-322
p
< 0.001), the tension time index (712 ± 381 versus 1333 ± 694,
p
< 0.01), and the double product (5629 ± 2574 versus 7440 ± 3294,
p
< 0.01) were significantly lower during assistance with the PACD than with the CBP. It was concluded that PACD is at least
as effective as CBP for restoring hemodynamic status during acute experimental cardiogenic shock. Moreover, the PACD unloads
the left ventricle more effectively than CBP, making it suitable for left ventricular mechanical support in cases with reversible
myocardial damage. 相似文献
4.
Berbaum KS; el-Khoury GY; Franken EA Jr; Kathol M; Montgomery WJ; Hesson W 《Radiology》1988,168(2):507-511
The effect of knowledge of localizing symptoms and signs in the detection of fractures was studied. Forty radiographs of the extremities were examined twice by seven radiologists; the sessions were separated by 4 months. In 26 cases, a subtle fracture was present; 14 cases were normal. In half of the cases at each session, the precise location of pain, tenderness, or swelling was provided. The observer was asked to determine if the case was normal or abnormal (provide the exact location of the fracture) and to indicate the degree of confidence in the diagnosis. Responses were converted to a numeric scale for analysis. Analysis of receiver operator characteristic parameters indicates that clues regarding location of trauma facilitate detection of fractures. The improvement is based largely on an increased true-positive rate without an increased false-positive rate, regardless of the decision criteria of the radiologist (overall willingness to "overread" or "underread"). This has direct clinical applicability and reinforces the plea of radiologists for precise clinical information. 相似文献
5.
I?Satish?RaoEmail author Anand?C?Loya KS?Ratnakar VR?Srinivasan 《BMC clinical pathology》2005,5(1):11
Background
Lymph node infarction is known to occur in association with many non-neoplastic and neoplastic conditions however its occurrence in association with DIC is not reported hitherto in the literature. 相似文献6.
Acute porphyria is rare in orientals. We describe a Chinese woman with recurrent generalised tonic-clonic seizures and abdominal pain. Genomic DNA studies identified a heterozygous base substitution from guanine to adenine at nucleotide position 503, resulting in substitution of arginine by histidine at position 168 of the protein (R168H). This genetic abnormality is similar to the mutation reported in Caucasians with variegate porphyria. To the best of our knowledge, this is the first report in the English literature a Chinese patient with variegate porphyria with an identifiable mutation. A brief review of porphyria is presented. 相似文献
7.
M elikta N Okur KS Aikimbaev F Binokay M Sert E Akgül 《Journal of Medical Imaging and Radiation Oncology》2004,48(3):398-400
Pheochromocytomas of the bladder are rare neoplasms, constituting <0.06% of all vesical tumours. Common presenting features of this tumour include episodes of sweating, hypertension, haematuria and postmicturition syncope. We describe a case of bladder pheochromocytoma in a 66‐year‐old man whose only symptom of macroscopic haematuria was initially assessed with ultrasonography. Clinical presentation highlights the need for a high index of suspicion during sonographic evaluation of bladder neoplasms because such tumours might present without symptoms of adrenergic excess. 相似文献
8.
9.
Martin-Carbonero L Barrios A Saballs P Sirera G Santos J Palacios R Valencia ME Alegre M Podzamczer D González-Lahoz J;Caelyx/KS Spanish Group 《AIDS (London, England)》2004,18(12):1737-1740
Twenty-eight HIV patients either naive or failing highly active antiretroviral therapy (HAART)with moderate-advanced Kaposi's sarcoma (KS)were randomly chosen to initiate a new HAART regimen plus pegylated liposomal doxorubicin(PLD) or the new HAART regimen alone. After 48 weeks, better response rates were observed in the HAART plus PLD group (76% versus 20%).In HIV-infected patients with moderate-advanced KS, HAART alone may not be enough for KS response. 相似文献
10.
Emil KS Espe Jan Magnus Aronsen Kristine Sk?rdal Jürgen E Schneider Lili Zhang Ivar Sjaastad 《Journal of cardiovascular magnetic resonance》2013,15(1):82