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   429篇
  免费   24篇
  国内免费   1篇
耳鼻咽喉   1篇
儿科学   10篇
妇产科学   3篇
基础医学   46篇
口腔科学   29篇
临床医学   33篇
内科学   80篇
皮肤病学   5篇
神经病学   54篇
特种医学   16篇
外科学   56篇
综合类   7篇
预防医学   4篇
眼科学   22篇
药学   58篇
中国医学   2篇
肿瘤学   28篇
  2023年   6篇
  2022年   14篇
  2021年   32篇
  2020年   18篇
  2019年   21篇
  2018年   26篇
  2017年   14篇
  2016年   24篇
  2015年   20篇
  2014年   24篇
  2013年   26篇
  2012年   44篇
  2011年   41篇
  2010年   26篇
  2009年   18篇
  2008年   29篇
  2007年   30篇
  2006年   22篇
  2005年   5篇
  2004年   3篇
  2003年   5篇
  2002年   3篇
  1999年   1篇
  1997年   2篇
排序方式: 共有454条查询结果,搜索用时 15 毫秒
1.
Gall bladder perforation is a potentially life-threatening condition. Spontaneous perforation is infrequent and rarely seen in the absence of gallstones but gall bladder perforation is an occasional complication of typhoid fever. If such perforations are not treated in time, mortality rates are very high. We report a case of gall bladder perforation complicating typhoid fever following enteric perforation of the ileum necessitating sequential laparotomies during the same admission.  相似文献   
2.
3.
4.
Fusarium is a filamentous opportunistic pathogenic fungus responsible for superficial as well as invasive infection in immunocompromized hosts. Net state of immunosuppression and cytomegalovirus (CMV) infection appear to predispose to this disease which is life-threatening when disseminated. Though infections with Fusarium have been widely described in hematological malignancies and hematopoietic stem cell transplant cases, they have been reported to be rare in solid organ transplant recipients, are often localized and carry a favorable prognosis. We here describe a rare case of subcutaneous non-invasive infection with Fusarium in a renal allograft recipient two and half years after transplantation. Patient had a previous history of CMV infection along with multiple other recurrent co-infections. Diagnosis was based on culture of tissue specimens yielding Fusarium species. The infection had a protracted course with persistence of lesions after treatment with voriconazole alone, requiring a combination of complete surgical excision and therapy with the anti-fungal drug.  相似文献   
5.
Among patients undergoing cardioversion for atrial fibrillation, the presence of left ventricular thrombus is a relatively uncommon and challenging clinical dilemma. While left atrial appendage thrombus is a contraindication to cardioversion, there is paucity of data regarding the safety of cardioversion in with the presence of left ventricular apical thrombus. Also, thrombus characteristics such as protrusion and mobility on echocardiography are known risk factors for systemic embolism. In this article, we present a case highlighting the management of atrial fibrillation in the setting of left ventricular dysfunction, acute heart failure, and echocardiographic evidence of acute left ventricular apical thrombus.  相似文献   
6.
Tuberculous infection manifesting as an isolated intramedullary tuberculoma of the spinal cord is distinctly unusual. We report a case of a 35 year old woman presenting with an insidious onset of myelopathy, where MRI showed characteristic imaging findings suggestive of intramedullary tuberculosis.  相似文献   
7.
One of the most commonly asked question by a patient who comes for extraction especially in the rural areas is whether the procedure will cause problems to the eye!! In reality however, ophthalmic complications following routine maxillary molar extractions are practically unheard of. When they occur they can be extremely unnerving not just to the patient but also to the surgeon. Patients generally panic which makes it tougher for the clinician to assess the situation. We present a case of a 26 year old female patient developing ophthalmic complication following local anesthesia administration during extraction of upper left maxillary third molar. In this article, ophthalmic complications arising from posterior superior alveolar nerve block are discussed and management guidelines are highlighted.  相似文献   
8.
9.
Transient lower esophageal sphincter relaxation (tLESR) and decreased basal lower esophageal sphincter (LES) pressure are postulated mechanisms of gastroesophageal reflux (GER). There is conflicting evidence on the effect of carbonated drinks on lower esophageal sphincter function. This study was conducted to assess the effect of a carbonated beverage on tLESR and LES pressure. High resolution manometry tracings (16 channel water-perfused, Trace 1.2, Hebbard, Australia) were obtained in 18 healthy volunteers (6 men) for 30 min each at baseline, and after 200 mL of chilled potable water and 200 mL of chilled carbonated cola drink (Pepsi [Pepsico India Ltd]). The sequence of administration of the drinks was determined by random number method generated by a computer. The analysis of tracings was done using TRACE 1.2 software by a physician who was unaware of the sequence of administration of fluids. The mean (SD) age of the participant was 37.3 (12.9) years. The median (range) frequency of tLESr was higher after the carbonated beverage (10.5 [0-26]) as compared to baseline (0 [0-3], p?=?0.005) as well as after water (1 [0-14], p?=?0.010). The LES pressure decreased after ingestion of the carbonated beverage (18.5 [11-37] mmHg) compared to baseline (40.5 [25-66] mmHg, p?=?0.0001) and after water (34 [15-67] mmHg, p?=?0.003). Gastric pressure was not different in the three groups. Ingestion of a carbonated beverage increases tLESr and lowers LES pressure in healthy subjects.  相似文献   
10.
Cleft lip and palate deformity is a congenital defect of the middle third of the face. Incidence varies from 1:500 to 1:2500 live births. Etiology depends upon hereditary and environmental factors. Restoration of these defects is important not only for functional and esthetic reasons, but also because there may be a positive psychological impact for the patient and parents. The goal of primary closure of the lip for unilateral cleft lip is to ensure a normal and symmetrical lip and nose. Presurgical infant orthopedics has been employed since the 1950s as an adjunctive neonatal therapy for the correction of cleft lip and palate. Presurgical nasoalveolar molding (PNAM) represents a paradigm shift from the traditional methods of presurgical infant orthopedics. PNAM consists of active molding of the alveolar segments as well as the surrounding soft tissues. This clinical report describes a new approach of PNAM therapy for an infant with complete unilateral cleft lip and palate showing significant reduction in cleft defect size and improved contour and topography of deformed surrounding soft tissues.  相似文献   
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