全文获取类型
收费全文 | 6616篇 |
免费 | 403篇 |
国内免费 | 136篇 |
专业分类
耳鼻咽喉 | 215篇 |
儿科学 | 260篇 |
妇产科学 | 117篇 |
基础医学 | 415篇 |
口腔科学 | 140篇 |
临床医学 | 989篇 |
内科学 | 1114篇 |
皮肤病学 | 209篇 |
神经病学 | 327篇 |
特种医学 | 362篇 |
外科学 | 1178篇 |
综合类 | 764篇 |
现状与发展 | 2篇 |
预防医学 | 273篇 |
眼科学 | 89篇 |
药学 | 371篇 |
4篇 | |
中国医学 | 177篇 |
肿瘤学 | 149篇 |
出版年
2024年 | 16篇 |
2023年 | 101篇 |
2022年 | 243篇 |
2021年 | 306篇 |
2020年 | 226篇 |
2019年 | 237篇 |
2018年 | 193篇 |
2017年 | 204篇 |
2016年 | 187篇 |
2015年 | 209篇 |
2014年 | 424篇 |
2013年 | 482篇 |
2012年 | 359篇 |
2011年 | 389篇 |
2010年 | 338篇 |
2009年 | 301篇 |
2008年 | 307篇 |
2007年 | 310篇 |
2006年 | 264篇 |
2005年 | 242篇 |
2004年 | 202篇 |
2003年 | 181篇 |
2002年 | 124篇 |
2001年 | 120篇 |
2000年 | 119篇 |
1999年 | 87篇 |
1998年 | 93篇 |
1997年 | 81篇 |
1996年 | 83篇 |
1995年 | 70篇 |
1994年 | 61篇 |
1993年 | 56篇 |
1992年 | 49篇 |
1991年 | 50篇 |
1990年 | 43篇 |
1989年 | 44篇 |
1988年 | 37篇 |
1987年 | 38篇 |
1986年 | 52篇 |
1985年 | 43篇 |
1984年 | 37篇 |
1983年 | 25篇 |
1982年 | 31篇 |
1981年 | 26篇 |
1980年 | 10篇 |
1979年 | 11篇 |
1978年 | 16篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1974年 | 4篇 |
排序方式: 共有7155条查询结果,搜索用时 31 毫秒
41.
目的探讨经皮穿刺肝脓肿引流术的临床应用。方法对13例肝脓肿行经皮穿刺引流术,13例均放置引流管持续引流。结果13例手术均获得成功,成功率100%(13/13)。随访15~45天,症状明显好转,病灶缩小或消失。无一例发生并发症。结论经皮穿刺肝脓肿引流术,可缩短病程,手术成功率高,并发症少,值得推广应用。 相似文献
42.
本文对44例牙源性脓肿(尖周脓肿24例,牙周脓肿12例,冠周脓肿8例)脓液标本中的产黑色素类杆菌群菌株进行分离、培养、鉴定。其中38例存在产黑菌群,以中间型类杆菌阳性率最高。牙龈类杆菌在牙周脓肿中检出率最高。24例尖周脓肿可分离出6株牙髓类杆菌而其它两种牙源性脓肿则无牙髓类杆菌,推测该菌与牙髓尖周感染的病理过程有关。 相似文献
43.
44.
E. B. Andersen F. Boesen O. Henriksen 《Clinical physiology and functional imaging》1991,11(5):451-458
Summary. The effect of age and sex on relative changes in blood flow and vascular resistance in skeletal muscle and subcutaneous tissue during postural changes and during local increase in transmural pressure was studied in 33 healthy subjects. The intra-individual variation was studied in five subjects. Blood flow was measured by the local 133Xenon wash-out method. No relation to age or sex was seen in the centrally elicited sympathetic vasoconstrictor responses in subcutaneous tissue and skeletal muscle and in the locally elicited vasoconstriction in subcutaneous tissue. A small, but statistically significant, correlation to sex and age was found in the local sympathetic vasoconstrictor response in skeletal muscle. The age correlation was caused only by an attenuated response in the young subjects below 40 years of age and may be fortuitous. The intra-individual variation was acceptably small. Based on the present results, a reduction in blood flow in skeletal muscle and subcutaneous tissue during centrally or locally elicited sympathetic vasoconstriction of 10% or less should be considered abnormal. The local 133Xenon wash-out method is of value in examining patients suspected of dysfunction in the sympathetic part of the autonomic nervous system. 相似文献
45.
Epidural abscess is a well-recognised but rare complication of epidural catheter placement. We have found only five previous reports of epidural abscess from noncatheter-related administration of steroids and/or local anaesthetic. We describe a further case which led to critical illness and emphasise the association between diabetes mellitus and epidural infection. 相似文献
46.
Masakazu Yamagata Kimiko Kumano Masato Ueda 《Journal of the European Academy of Dermatology and Venereology》1997,9(3):256-258
Pyoderma gangrenosum is a rare, chronic, inflammatory ulcerative skin disease of unknown etiology and pathogenesis. It is often associated with systemic disease. We describe a patient with pyoderma gangrenosum associated with ulcerative colitis and aseptic abscesses of the subcutis and spleen, which have been rarely reported previously. These manifestations were cleared by combined therapy with minocycline hydrochloride and diaphenylsulfone. 相似文献
47.
48.
C. A. Gogos J. K. Starakis H. P. Bassaris A. T. Skoutelis 《Clinical microbiology and infection》2003,9(6):540-542
Abscess formation at the injection site is an unusual infectious complication of interferon- α (IFN- α ) treatment of chronic hepatitis C virus (HCV) infection, but remote abscess formation during IFN- α therapy is very rare. In the present communication, we report three cases of remote abscess formation detected among 68 patients with chronic viral hepatitis treated with IFN- α , and review the pertinent English literature. We believe that, as fever and constitutional symptoms are common side effects of IFN- α treatment, a high index of suspicion is indicated to exclude abscess formation in cases of unexplained fever during IFN- α therapy. 相似文献
49.
A. J. Varghese V. N. Chaturvedi 《Indian journal of otolaryngology and head and neck surgery》2007,59(3):233-236
Objective To find out the usability and advantage with regard to the advent of new and more costly antibiotics. In the treatment of
Peritonsillar abscess the demonstration of, both aerobic and anaerobic organisms has raised the question of possible need
to treat with antibiotics effective against anaerobes.
It was in this very context that this study was planned to find out if we still have an economically and easily available
antibiotic to treat Peritonsillar abscess.
Conclusions Injectable penicillin is the drug of choice in PTA as GABHS and staphylococcus aureus coagulase positive are the most common
organism associated with this condition. Even where penicillin resistant organism is present, effective management of the
abscess is possible if it is drained well and weak hydrogen peroxide gargles are used along with injectable penicillin. 相似文献
50.
Abstract. Objectives. To evaluate the efficacy of self-administered subcutaneous sumatriptan in the acute treatment of early-morning migraine attacks. Design. A double-blind, randomized, placebo-controlled, cross-over study. Setting. Thirteen neurology centres in France. Subjects. Patients of either sex, 18–65 years old, with two to six attacks of migraine (according to the International Headache Society (IHS) criteria, with or without aura) per month, of which at least two had to be early-morning migraine attacks. One-hundred-and-one patients were included, 96 being evaluable for the first attack and 81 for the cross-over design. Interventions. Two migraine attacks (grade 2/3) were treated with sumatriptan (6 mg) or placebo, with an optional second injection 1–24 h later. Main outcome measures. The primary end-point was headache relief: reduction in headache severity from grade 2/3 (moderate/severe) to grade 1/0 (mild/none) 2 h after treatment. Results. Sumatriptan was superior to placebo for headache relief (32 [78%] vs. 11 [28%] at the first attack; 29 [73%] vs. 8 [20%] at the second; P < 0.001). Because of a significant carry-over effect for some of the secondary end-points, a parallel-group analysis of the first attack was performed, which confirmed a significantly higher efficacy of sumatriptan for all end-points: pain-free rate (22 [46%] vs. 7 [15%]; P = 0.001) and use of a second injection (26 [53%] vs. 38 [81%]; P = 0.004). Sumatriptan was preferred by 74% of patients vs. 17% for placebo, and 9% expressed no preference (P < 0.0001). After complete relief, headache reappeared in 8/23 (35%) patients with sumatriptan and 3/7 (43%) with placebo. Adverse events were significantly more frequent with sumatriptan but they were minor and transient. Conclusion. Subcutaneous sumatriptan auto-injection is an effective and well-tolerated acute treatment of early-morning migraine attacks allowing earlier return to normal activity. 相似文献