首页 | 官方网站   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   4675篇
  免费   314篇
  国内免费   21篇
医药卫生   5010篇
  2023年   65篇
  2022年   45篇
  2021年   204篇
  2020年   143篇
  2019年   173篇
  2018年   229篇
  2017年   196篇
  2016年   168篇
  2015年   154篇
  2014年   225篇
  2013年   294篇
  2012年   425篇
  2011年   402篇
  2010年   257篇
  2009年   180篇
  2008年   317篇
  2007年   300篇
  2006年   254篇
  2005年   201篇
  2004年   204篇
  2003年   167篇
  2002年   148篇
  2001年   23篇
  2000年   17篇
  1999年   18篇
  1998年   27篇
  1997年   16篇
  1996年   14篇
  1995年   16篇
  1994年   14篇
  1993年   10篇
  1992年   5篇
  1991年   8篇
  1990年   18篇
  1989年   3篇
  1988年   6篇
  1987年   7篇
  1986年   5篇
  1985年   2篇
  1984年   5篇
  1983年   7篇
  1982年   5篇
  1981年   7篇
  1980年   7篇
  1979年   3篇
  1978年   2篇
  1977年   2篇
  1976年   7篇
  1973年   1篇
  1972年   1篇
排序方式: 共有5010条查询结果,搜索用时 16 毫秒
1.
2.
3.
A 17-year-old man presented with signs of peritonitis. Laparotomy revealed gangrene of the stomach without obvious cause. The patient underwent total gastrectomy with esophago-jejunal anastomosis with formation of jejunal pouch. Bacterial culture of the peritoneal fluid grew Strept. pyogenes and E. coli. The patient was discharged on day 21 after a stormy postoperative course.  相似文献   
4.
BACKGROUND AND OBJECTIVES: Feasibility of ambulatory laparoscopic inguinal hernia repair in developing countries is not known due to lack of dedicated outpatient centers. This study prospectively evaluated the feasibility of outpatient discharge after laparoscopic total extraperitoneal inguinal hernia repair done in combination with in-hospital services and its impact on quality of life. METHODS: Forty patients were studied who had uncomplicated inguinal hernias and fulfilled the selection criteria. Quality of life was evaluated by using the SF-12 questionnaire. RESULTS: Ninety percent of patients could be discharged as outpatients. Four patients required admission. No major complications or readmissions occurred. Physical components of quality of life deteriorated in the immediate postoperative period but improved to above preoperative levels within one month. A transient deterioration in subgroups of the mental health component was observed, which recovered to normal in less than a week. There was no significant alteration in the emotional component. There has been no recurrence at a median follow-up of 25 months. CONCLUSION: It was feasible to safely perform outpatient TEP in combination with routine in-hospital services without increasing complications or causing any adverse impact on quality of life. This was possible subject to adherence to proper selection and discharge criteria.  相似文献   
5.
6.
OBJECTIVES: The purpose of this study was to determine quality of life (QOL) and exercise performance (EP) in patients with persistent atrial fibrillation (AF) converted to sinus rhythm (SR) compared with those remaining in or reverting to AF. BACKGROUND: Restoration of SR in patients with AF improving QOL and EP remains controversial. METHODS: Patients with persistent AF were randomized double-blind to amiodarone, sotalol, or placebo. Those not achieving SR at day 28 were cardioverted and classified into SR or AF groups at 8 weeks (n = 624) and 1 year (n = 556). The QOL (SF-36), symptom checklist (SCL), specific activity scale (SAS), AF severity scale (AFSS), and EP were assessed. RESULTS: Favorable changes were seen in SR patients at 8 weeks in physical functioning (p < 0.001), physical role limitations (p = 0.03), general health (p = 0.002), and vitality (p < 0.001), and at 1 year in general health (p = 0.007) and social functioning (p = 0.02). Changes in the scores for SCL severity (p = 0.01), functional capacity (p = 0.003), and AFSS symptom burden (p < 0.001) at 8 weeks and in SCL severity (p < 0.01) and AF symptom burden (p < 0.001) at 1 year showed significant improvements in SR versus AF. Symptomatic patients were more likely to have improvement. The EP in SR versus AF was greater from baseline to 8 weeks (p = 0.01) and to 1 year (p = 0.02). The EP correlated with physical functioning and functional capacity except in the AF group at 1 year. CONCLUSIONS: In patients with persistent AF, restoration and maintenance of SR was associated with improvements in QOL measures and EP. There was a strong correlation between QOL measures and EP.  相似文献   
7.
Role of Embolisation in preoperative management of Nasopharyngeal angiofibroma is well established in present day therapeutic modalities. An improvised technique i.e., subselective embolisation has been provided by Interventional radiologists to fortify the therapeutic results. This study compares the final outcome of seven cases, four of which were embolised pre operatively. Each case was dealt with varying surgical approaches.  相似文献   
8.
OBJECTIVE: Recent studies of patients with juvenile bipolar disorder report low rates of recovery and high rates of chronicity. However, we lack data on the short-term outcome. This study examines the pattern of recovery from the index episode in an aggressively treated juvenile sample. METHOD: We assessed 25 subjects (< 16 years) with a diagnosis of mania, using the Diagnostic Interview for Children and Adolescents-Revised) (DICA-R), Young Mania Rating Scale (YMRS), and Children's Global Assessment Scale (CGAS) at intake and at 3 and 6 months. We studied the time taken to recover from the index episode, the level of functioning, and the factors predicting them. RESULTS: After 6 months, 24 (96%) subjects had recovered from the index manic episode. The median time to recovery was 27 days. Total episode length was significantly longer among those with previous affective episodes. CONCLUSIONS: The findings suggest that juvenile-onset mania has high rates of recovery and low rates of chronicity. These differences from the existing literature need further exploration.  相似文献   
9.
It was postulated that identification of term (LGA) large for gestational age newborns by the Portland Intrauterine Growth Curve rather than the Colorado Curve would classify a lesser number of neonates as LGA, but would identify the LGA neonates at risk for hypoglycemia. One hundred inborn neonates who plotted LGA on the Colorado Chart were reviewed. Sixty-one infants were LGA on the Portland Chart. Of the 100 infants, 17 were found to have dextrostix less than 45 mg% in the first two hours of life, 15 of these had quantitative blood glucose (BG) test performed. Eleven of the 15 neonates had a BG less than 40 mg%; all 11 hypoglycemic neonates were identified LGA on the Colorado Graph whereas only seven were identified LGA by the Portland Graph. The authors conclude that the Colorado Graph is a better tool in their population than the Portland in identifying term LGA neonates at risk for hypoglycemia.  相似文献   
10.
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-23

京公网安备 11010802026262号