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   192篇
  免费   2篇
  国内免费   4篇
耳鼻咽喉   1篇
儿科学   1篇
基础医学   12篇
口腔科学   2篇
临床医学   15篇
内科学   54篇
皮肤病学   2篇
神经病学   11篇
特种医学   23篇
外科学   48篇
综合类   1篇
预防医学   11篇
眼科学   1篇
药学   8篇
肿瘤学   8篇
  2023年   1篇
  2022年   4篇
  2021年   5篇
  2020年   3篇
  2019年   4篇
  2018年   8篇
  2017年   3篇
  2016年   3篇
  2015年   11篇
  2014年   7篇
  2013年   1篇
  2012年   17篇
  2011年   21篇
  2010年   9篇
  2009年   5篇
  2008年   10篇
  2007年   21篇
  2006年   8篇
  2005年   14篇
  2004年   8篇
  2003年   7篇
  2002年   4篇
  2001年   3篇
  2000年   2篇
  1999年   1篇
  1998年   2篇
  1997年   1篇
  1994年   1篇
  1991年   3篇
  1990年   1篇
  1986年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1974年   1篇
  1973年   2篇
  1972年   1篇
  1971年   1篇
排序方式: 共有198条查询结果,搜索用时 31 毫秒
61.
62.
63.
The gut-associated lymphoid tissue is a major site of human immunodeficiency virus (HIV) activity and significantly influences disease prognosis. Reducing immune activation due to gastroenteritis may thus help slow disease progression. Probiotic microorganisms have considerable immunomodulatory effects at the level of the gut-associated lymphoid tissue. A probiotic yogurt initiative was thus established in Mwanza, Tanzania, to improve gastrointestinal (GI) integrity and reduce the incidence and severity of opportunistic infections among people with HIV. The research objective was to retrospectively evaluate the effects of yogurt supplemented with Lactobacillus rhamnosus as an adjunct to the diet of people living with HIV on systemic and GI symptoms, daily routine activities, and nutritional intake. Eighty-five people with HIV consuming probiotic yogurt and 86 controls were interviewed. Demographics and HIV disease stage were comparable between groups. Probiotic yogurt consumers reported an ability to work a median of 2 hours more daily (P = .01), experienced a lower fever incidence (P = .01), and were more likely to achieve daily nutrient requirements for vitamin A, several B complex vitamins, and calcium (P = .02). Antiretroviral users experienced less drug-induced stomach pain (P = .02) and a lower overall impact of GI symptoms on routine activities (P = .03). The results of this study need be further substantiated because of limits imposed by the observational, retrospective study design; however, results suggest that yogurt supplemented with L rhamnosus may effectively alleviate GI symptoms and improve productivity, nutritional intake, and tolerance to antiretroviral treatment among people with HIV in Mwanza.  相似文献   
64.
65.
66.

Background and Objectives:

Single-site laparoscopic colorectal surgery has been firmly established; however, few reports addressing this technique in the inflammatory bowel disease population exist.

Methods:

We conducted a case-matched retrospective review of 20 patients who underwent single-site laparoscopic procedures for inflammatory bowel disease compared with 20 matched patients undergoing multiport laparoscopic procedures. Data regarding these patients were tabulated in the following categories: demographic characteristics, operative parameters, and perioperative outcomes.

Results:

A wide range of cases were completed: 9 ileocolic resections, 7 cases of proctocolectomy with end ileostomy or ileal pouch anal anastomosis, 2 cases of proctectomy with ileal pouch anal anastomosis, and 2 total abdominal colectomies with end ileostomy were all matched to equivalent multiport laparoscopic cases. No single-incision cases were converted to multiport laparoscopy, and 2 single-incision cases (10%) were converted to an open approach. For single-incision cases, the mean length of stay was 7.7 days, the mean time to oral intake was 3.3 days, and the mean period of intravenous analgesic use was 5.0 days. There were no statistically significant differences between single-site and multiport cases.

Conclusions:

Single-site laparoscopic surgery is technically feasible in inflammatory bowel disease. The length of stay and period of intravenous analgesic use (in days) appear to be higher than those in comparable series examining outcomes of single-site laparoscopic colorectal surgery, and the outcomes are comparable with those of multiport laparoscopy. This may be because of the nature of inflammatory bowel disease, limiting the benefits of a single-site approach in this population.  相似文献   
67.
Asymptomatic pediatric pulmonic valve myxoma involving the right ventricular out flow tract (RVOT) is very rare. The case is presented of 13-year-old asymptomatic boy who was referred to the cardiology clinic for evaluation of murmur, and was found to have a large mobile mass (3 x 2 cm) in the RVOT that protruded into the pulmonary artery across the pulmonary valve during systole, and relocated in the right ventricle in diastole. The patient underwent successful surgical excision of the tumor, which had a short stalk attached to the pulmonary valve. Macroscopic examination revealed a typical myxoma without any evidence of malignancy. This case elaborates the importance of early recognition and surgical excision of these tumors in order to prevent thromboembolic complications.  相似文献   
68.
69.
In 3 patients, 2 women aged 56 and 57 and a 65-year-old man, who presented with overt and occult gastrointestinal bleeding, no focus of the bleeding could be found during gastroscopy and colonoscopy. The patients were then examined and treated by double-balloon enteroscopy (DBE). DBE is a relatively new endoscopic technique that allows high-resolution visualisation of the entire small intestine with full endoscopic instrumentation. The 56-year-old woman had coeliac disease and an enteropathy-associated T-cell lymphoma with stenoses over approximately 150 cm of bowel length. She was given chemotherapy and responded well. The 57-year-old woman suffered from Rendu-Osler-Weber syndrome with multiple angiodysplasias in the small intestine. She was treated 5 times with argon plasma coagulation during DBE, for more than 40 angiodysplasias, and thereafter no longer needed blood transfusions. The 65-year-old man had a history of recurrent melanoma. During DBE, multiple metastases of a melanoma in the small intestine were found and tattooed. The tumours were later surgically excised, with no further metastases in the following 2 years. DBE has proven to be a good diagnostic and therapeutic tool in the management of small intestinal diseases.  相似文献   
70.
We report on a 5-week-old male infant with recurrent respiratory distress since birth and congenital thymic hyperplasia. Acute life-threatening thymic bleeding apparently from ruptured thymic cysts into the pleural spaces complicated the clinical situation. Thoracotomy and complete thymectomy were performed. Histologic examination revealed normal thymic architecture with cysts of different sizes and an increased thymic weight of 30 g. The combination of true thymic hyperplasia and cyst bleeding in a newborn has not been previously reported and will be discussed in relation to the available literature on respiratory distress due to thymic pathology in childhood.  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