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   1699198篇
  免费   124426篇
  国内免费   3800篇
耳鼻咽喉   21870篇
儿科学   55712篇
妇产科学   46293篇
基础医学   241765篇
口腔科学   48786篇
临床医学   151653篇
内科学   334377篇
皮肤病学   38790篇
神经病学   131412篇
特种医学   64055篇
外国民族医学   243篇
外科学   258077篇
综合类   38986篇
现状与发展   4篇
一般理论   532篇
预防医学   124560篇
眼科学   40245篇
药学   123899篇
  7篇
中国医学   4482篇
肿瘤学   101676篇
  2021年   12856篇
  2019年   13597篇
  2018年   20033篇
  2017年   15276篇
  2016年   16690篇
  2015年   19033篇
  2014年   26326篇
  2013年   38120篇
  2012年   52965篇
  2011年   55651篇
  2010年   32957篇
  2009年   30848篇
  2008年   51774篇
  2007年   55100篇
  2006年   55541篇
  2005年   52806篇
  2004年   51002篇
  2003年   48400篇
  2002年   46625篇
  2001年   91821篇
  2000年   93635篇
  1999年   76987篇
  1998年   19781篇
  1997年   17322篇
  1996年   17449篇
  1995年   16791篇
  1994年   15322篇
  1993年   14106篇
  1992年   57416篇
  1991年   55280篇
  1990年   52995篇
  1989年   50763篇
  1988年   46144篇
  1987年   44954篇
  1986年   42238篇
  1985年   40018篇
  1984年   29376篇
  1983年   24935篇
  1982年   13936篇
  1979年   25549篇
  1978年   17590篇
  1977年   14928篇
  1976年   13891篇
  1975年   14573篇
  1974年   17642篇
  1973年   16951篇
  1972年   15686篇
  1971年   14461篇
  1970年   13434篇
  1969年   12522篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Aim: The aim of study was to investigate the opportunities of local phlebectomy in the elimination of isolated pelvic-perineal reflux (PPR), as well as to determine the feasibility of endovascular embolization of the tributaries of internal iliac veins in PPR. Clinical trial no. NCT01598051.

Materials and methods: The work is based on the results of examination and treatment of 43 female patients with varicose veins of the pelvis, perineum, and lower extremities. Patients had no signs of pelvic congestion syndrome (PCS). All patients underwent duplex ultrasound scanning (DUS) and ovariography with pelvic phlebography (OPP). For the elimination of PPR, local phlebectomy was performed in the major labia and perineal area, with maximal possible mobilization of the vessel within the operative wound (33 patients). In 10 patients with isolated varicose transformation of the superficial veins on the posterior thigh, mini-phlebectomy was performed using the Varady phlebectomy extractors.

Results and discussion: The varicose syndrome of the external genitalia, perineum, and posterior thigh was successfully treated in 100% of patients. Findings suggest that thorough mobilization and excision of the veins of the pudendal labia, perineum, and subcutaneous veins of the thigh is a reliable method for eliminating the pathological reflux from the intrapelvic veins to the superficial veins of the perineum and lower extremities. No recurrences of vulvar, perineal varices or dilation of the veins of the lower extremities were observed in 100% of patients over the 3-year follow-up period.

Conclusion: Local phlebectomy is an effective technique for eliminating the isolated PPR in patients with varicose transformation of intrapelvic, vulvar, or perineal veins. Endovascular embolization of the tributaries of the internal iliac veins is not an essential component in the treatment of PPR. The present study has a limitation due to the absence of patients with PCS. The effectiveness of phlebectomy in the treatment of isolated PPR was studied.  相似文献   

72.

Aims

Delaying progression, ameliorating symptoms and maintaining quality of life (QoL) are primary aims of treatment for metastatic castrate-resistant prostate cancer (mCRPC). Real-world rather than clinical trial data about symptoms and side-effects are sparse. In EXTREQOL, patients' QoL, pain and information needs were recorded during treatment.

Material and methods

Men with mCRPC from 20 UK cancer centres starting various systemic mCRPC treatments completed QoL, pain and information needs questionnaires at baseline, 3 and 6 months.

Results

In total, 132 patients were recruited. Overall QoL declined significantly by 6 months (Functional Assessment of Cancer Therapy-Prostate [FACT-P] mean = –3.89, 95% confidence interval –6.7 to –1.05, P = 0.007; Trial Outcome Index [TOI] analysis mean = –3.10, 95% confidence interval –5.34 to –0.83, P = 0.007). Those who came off novel therapy and remained on luteinising hormone-releasing hormone agonist therapy alone had worse scores than patients receiving concomitant chemotherapy (Prostate Concerns Subscale mean difference = –4.45, 95% confidence interval –7.06 to –1.83, P = 0.001; TOI mean difference = –5.62, 95% confidence interval –10.97 to –0.26, P = 0.040). At 3 and 6 months, men who reported pain at baseline improved (43%, 40%), but for others pain levels remained the same (45%, 42%) or worsened (13%, 18%). Information regarding supportive care was lacking throughout the period of time on the study.

Conclusion

Most mCRPC treated patients experience reduced QoL and inadequate pain control. More help with pain management and better information provision regarding supportive care is warranted.  相似文献   
73.
ABSTRACT

Introduction

Alcohol withdrawal syndrome is a common and life-threatening condition in patients suffering from alcohol use disorder. Treatment of this syndrome is challenging, especially in patients that are critically ill, either because of withdrawal symptoms or underlying conditions. For the treatment, several pharmacological agents exist, such as benzodiazepines, barbiturates, or dexmedetomidine. Nonetheless, as alcohol withdrawal syndromes can occur in every clinical setting, it is necessary to provide a guideline for clinicians confronted with this syndrome in varying clinical contexts.  相似文献   
74.
75.
76.
77.
78.
79.
80.
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