全文获取类型
收费全文 | 2409篇 |
免费 | 108篇 |
国内免费 | 19篇 |
专业分类
耳鼻咽喉 | 114篇 |
儿科学 | 241篇 |
妇产科学 | 104篇 |
基础医学 | 161篇 |
口腔科学 | 48篇 |
临床医学 | 199篇 |
内科学 | 456篇 |
皮肤病学 | 63篇 |
神经病学 | 178篇 |
特种医学 | 102篇 |
外科学 | 486篇 |
综合类 | 27篇 |
预防医学 | 61篇 |
眼科学 | 103篇 |
药学 | 114篇 |
中国医学 | 1篇 |
肿瘤学 | 78篇 |
出版年
2024年 | 3篇 |
2023年 | 18篇 |
2022年 | 23篇 |
2021年 | 39篇 |
2020年 | 39篇 |
2019年 | 38篇 |
2018年 | 60篇 |
2017年 | 35篇 |
2016年 | 72篇 |
2015年 | 66篇 |
2014年 | 75篇 |
2013年 | 113篇 |
2012年 | 158篇 |
2011年 | 153篇 |
2010年 | 91篇 |
2009年 | 81篇 |
2008年 | 171篇 |
2007年 | 183篇 |
2006年 | 204篇 |
2005年 | 231篇 |
2004年 | 176篇 |
2003年 | 125篇 |
2002年 | 112篇 |
2001年 | 61篇 |
2000年 | 62篇 |
1999年 | 35篇 |
1998年 | 8篇 |
1997年 | 9篇 |
1996年 | 7篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 15篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 6篇 |
1985年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 4篇 |
1971年 | 2篇 |
1970年 | 4篇 |
1968年 | 2篇 |
1967年 | 6篇 |
1966年 | 3篇 |
排序方式: 共有2536条查询结果,搜索用时 15 毫秒
81.
Dural K Han S Yildirim E Koçer B Kandemir M Ozişik K Sakinci U 《Tüberküloz ve toraks》2005,53(1):57-61
Thoracostomy tube placement (TT) is currently one of the most important treatment modalities used in traumatic pneumothorax patients. In patients with low pneumothorax ratio (percentage), both follow-up without surgery and employing intervention when indicated may be appropriate choice. We presented the outcome of patients with low traumatic pneumothorax ratio treated by follow up without surgical intervention in our clinic. During the period from January 2000 until January 2002, 108 patients who were treated and followed with low percentage traumatic pneumothorax in Ankara Numune Hospital Thoracic Surgery Clinic were allocated into three groups due to blunt trauma of the thorax, penetrating-cutting instrument injury and gunshot injury. All patients were admitted to the clinic with the purpose of observation without surgical intervention and chest roentgenograms were taken at the sixth and twelfth hours and daily thereafter. TT was performed for 46 (43%) patients whose pneumothorax ratio increased during the observation period. TT was more frequent in patients with 20% percentage pneumothorax (69%) as well as with two or more fractured ribs (69%). Follow-up without surgical intervention may one of the appropriate modes of treatment in patients who have minimal traumatic pneumothorax. 相似文献
82.
83.
84.
Türk İpek Cüzdan Nihan Çiftçi Volkan Arslan Didem Doğan Muharrem Cem Unal İlker 《Clinical rheumatology》2020,39(1):57-67
Clinical Rheumatology - The aim of this study was to evaluate the associations between malnutrition and the clinical features of the disease and depression in patients with systemic sclerosis... 相似文献
85.
Ekrem Unal Serkan Ozsoylu Ayse Bayram Mehmet Akif Ozdemir Ebru Yilmaz Mehmet Canpolat Abdulfettah Tumturk Huseyin Per 《Child's nervous system》2014,30(8):1375-1382
Purpose
Vitamin K deficiency bleeding is one of the most common causes of acquired hemostatic disorder in early infancy. Although vitamin K is practiced routinely after every birth in Turkey, children with type of vitamin K deficiency bleedings (L-VKDB) can be encountered. We aimed to evaluate the clinical features of the children with L-VKDB reported from Turkey.Methods
Between 1995 and 2013, 48 studies reporting 534 children with L-VKDB were evaluated in this study.Results
Of the 534 reported children (178 girls, 356 boys), 486 (91 %) were extremely breastfed. The most common bleeding sites were intracranial hemorrhage, gastrointestinal, and umbilical in 414 (77.4 %), 33 (6.2 %), and 33 (6.2 %) children, respectively, and 35 (6.6 %) children had been diagnosed incidentally without any bleeding. The etiology of 399 (74.7 %) children were classified as idiopathic, whereas 135 (25.3 %) were secondary. Intramuscular vitamin K was administered in 248 (46.4 %), not administered in 228 (42.7 %), and the administration of vitamin K were not determined in 58 (10.9 %) children. The outcomes of Turkish cohort showed that 111 (20.8) children died, 257 (48.1 %) cases developed neurologic deficit (mainly epilepsy and psychomotor retardation), and only 166 (31.1 %) patients recovered without squeal.Conclusions
The compliance of prophylactic measures in Turkey does not seem to be satisfactory. As a further measure of tomorrow, we vigorously emphasize that a national surveillance program may be initiated. An additional intramuscular dose or oral supplementation of vitamin K especially for exclusively breast-fed infants may reduce this catastrophic problem in our country. 相似文献86.
87.
Sevim Şahin Ali Cansu Tülay Kamaşak İlker Eyüboğlu Gülnur Esenülkü Ayşenur Ökten 《Child's nervous system》2014,30(12):2139-2142
Background
Infections are an important acquired cause of cerebral arteriopathy. Tuberculous (TB) meningitis leading to infectious cerebral vasculopathy is a rare cause of acute hemiparesis.Case report
A 14-year-old male patient was examined after acute hemiparesis developing within 1 day. Neurological examination revealed total hemiplegia on the left side. Brain MRI findings showed bilateral focal T2-weighted signal hyperintensity in the subcortical and deep white matter regions. There were also areas of restricted diffusion in the right basal ganglia. Although the father had a history of pulmonary TB, the patient had not been given TB prophylaxis because of PPD negativity. At lumbar puncture, opening cerebrospinal fluid (CSF) pressure was 50 cm/H20, CSF protein 66.9 mg/dL, and glucose 54 mg/dL (concurrent blood glucose 93 mg/dL); 170 polymorphonuclear leukocytes per cubic millimeter were present in CSF. Following tests for TB, treatment was started immediately with four anti-TB drugs. TB PCR of CSF and acid-fast bacteria (AFB) staining in gastric aspirate were positive. At clinical follow-up, the patient was able to walk with support at the end of the first month.Conclusion
Various infectious agents have been reported as causes of cerebral vasculopathy. TB, which affects a significant number of patients worldwide, should be kept in mind in terms of cerebral vascular complications. Lumbar puncture is essential in order to diagnose TB meningitis. 相似文献88.
Mehmet Serdar Kutuk Laure Croisille Sureyya Burcu Gorkem Ebru Yilmaz Levent Korkmaz Philippe Bierling Ekrem Unal 《Child's nervous system》2014,30(12):2147-2150
Background
Maternal autoimmune thrombocytopenic purpura (AITP) can cause fetal intracranial hemorrhage.Case report
A 19-year-old primigravida was referred to our institution for prenatally detected ventriculomegaly at 30th week of gestation. Her personal and family histories were unremarkable. Her platelet count was 54?×?109/L. Fetal neurosonography showed intraparenchymal hemorrhage. AITP was diagnosed in the mother and platelet count decreased at 34?×?109/L. Patient was treated with methylprednisolone and intravenous immunoglobulin. She delivered a 2,340-g infant at 37 weeks with elective cesarean section. The platelet count of the newborn was 181?×?109/L and coagulation tests were normal. No antiplatelet specific antibodies were detected in cord blood. Postnatal MRI evaluation confirmed grade IV intracranial hemorrhage. The newborn baby has suffered from mild spasticity and seizures.Conclusions
Clinicians must be vigilant about the catastrophic fetal complications of maternal AITP; a close follow-up with a multidisciplinary cooperation between obstetricians, hematologists, and neonatologists must be warranted. 相似文献89.
Purpose
Lymphomas are the third most common childhood malignant disease after leukemia and central nervous system (CNS) tumors. Early diagnosis of these complications will reduce mortality and morbidity. In this study we aimed to review the neurological complications of childhood non Hodgkin Lymphoma (NHL).Patients and methods
Forty four children with NHL between 2006 and 2012 were investigated retrospectively and 14 cases with neurological complications were identified.Results
The most common symptom was alteration of the consciousness (10 patients, 71.4 %) followed by convulsion (5 patients, 35.7 %), and hallucination (4 patients, 28.5 %); headache, eye pain, neurogenic bladder, speech disability and facial paralysis, and hemiplegia, were less common and each of them was seen in 1 (7.1 %) of the patients. The neurological complications were mostly seen in children with precursor T lymphoblastic lymphoma followed by anaplastic large cell lymphoma. The complications were secondary to medications (Eight patients) infection (two patients); CNS relapse (two patients); or CNS involvement of the primary disease (two patients). Chemotherapy-related neurologic complications were secondary to intrathecal methotrexate, l-asparaginase, vincristine, and ifosfamideConclusion
Advanced disease and PTLL subtype can be suggested as predictors of neurological complication. The survival rates of neurological complications are fairly good unless it is secondary to involvement of the primary disease. In patients with drug-induced neurological complications, the treatment can be safely re-administered after controlling the neurological complications. Therefore, clinicians managing children with NHL must be informative about neurological complications. 相似文献90.