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   297篇
  免费   19篇
  国内免费   5篇
耳鼻咽喉   2篇
儿科学   11篇
妇产科学   4篇
基础医学   14篇
口腔科学   4篇
临床医学   23篇
内科学   83篇
皮肤病学   4篇
神经病学   17篇
特种医学   14篇
外科学   110篇
综合类   4篇
预防医学   8篇
眼科学   6篇
药学   13篇
肿瘤学   4篇
  2023年   3篇
  2022年   1篇
  2021年   13篇
  2020年   8篇
  2019年   13篇
  2018年   27篇
  2017年   10篇
  2016年   9篇
  2015年   10篇
  2014年   14篇
  2013年   14篇
  2012年   20篇
  2011年   18篇
  2010年   17篇
  2009年   13篇
  2008年   29篇
  2007年   15篇
  2006年   18篇
  2005年   19篇
  2004年   17篇
  2003年   11篇
  2002年   9篇
  1999年   1篇
  1995年   1篇
  1990年   1篇
  1989年   1篇
  1987年   2篇
  1986年   1篇
  1984年   2篇
  1982年   1篇
  1981年   1篇
  1977年   2篇
排序方式: 共有321条查询结果,搜索用时 15 毫秒
1.
2.

Purpose

To investigate the factors affecting primary bladder closure in cloacal exstrophy (CE). A successful primary closure is important for optimizing reconstructive outcomes, and it is a critical first-step in the reconstruction of CE. The authors' hypothesize that a smaller diastasis and use of an osteotomy are independent predictors of a successful closure.

Methods

A prospectively maintained database of 1332 exstrophy-epispadias complex (EEC) patients was reviewed for CE patients closed between 1975 and 2015. Univariate and multivariable analyses were performed to identify significant factors associated with CE primary bladder closure.

Results

Of 143?CE patients identified, 99 patients met inclusion criteria. Median follow-up time was 8.82 [IQR 5.43–14.26] years. In the multivariable model, the odds of having a successful closure are about 4 times greater for the staged cloacal approach compared to the 1-stage approach (OR, 3.7; 95% CI 1.2–11.5; p-value?=?0.023). Also, having an osteotomy increases the chance of a successful closure by almost six-fold (OR, 5.8; 95% CI 1.7–19.6; p-value?=?0.004).

Conclusions

Using the staged approach with a pelvic osteotomy is paramount to a successful primary closure in CE. The authors strongly recommend using the staged approach and osteotomy as these factors independently increase the chance for a successful primary bladder closure.

Study Type

Therapeutic study.

Level of Evidence

Level III, Retrospective comparative study.  相似文献   
3.
4.
5.
6.
In this study, we report a large family cluster consisting of 29 genetically related patients hospitalized with coronavirus disease‐2019 (COVID‐19). We sought to determine the clinical characteristics relevant to the clinical course of COVID‐19 by comparing the family cluster to unrelated patients with SARS‐CoV‐2 infection so that the presence of potential determinants of disease severity, other than traditional risk factors previously reported, could be investigated. Twenty‐nine patient files were investigated in group 1 and group 2 was created with 52 consecutive patients with COVID‐19 having age and gender compatibility. The virus was detected for diagnosis. The clinical, laboratory and imaging features of all patients were retrospectively screened. Disease course was assessed using records regarding outcome from patient files retrospectively. Groups were compared with respect to baseline characteristics, disease severity on presentation, and disease course. There was no difference between the two groups in terms of comorbidity and smoking history. In terms of inhospital treatment, use differed not significantly between two groups. We found that all 29 patients in the group 1 had severe pneumonia, 18 patients had severe pneumonia. Hospitalization rates, length of hospital stay, and transferred to intensive care unit were found to be statistically significantly higher in the group 1. In the present study, COVID‐19 cases in the large family cluster were shown to have more severe disease and worse clinical course compared with consecutive patients with COVID‐19 presenting to the same time. We believe further studies into potential genetic mechanisms of host susceptibility to COVID‐19 should include such family clusters.  相似文献   
7.
8.
9.

Purpose

This prospective randomised control study is to demonstrate whether or not there is a clinical benefit from inserting a Wallis implant on the functional recovery of patients who have undergone lumbar decompression surgery.

Method

Sixty consecutive patients with an average age of 58 years (34–81) who were selected for primary lumbosacral decompression were randomly assigned into two groups with equal number of patients, decompression alone or decompression with Wallis implant. The patients had an average follow-up of 40 months. Patients were assessed by visual analogue scale (VAS) (Boonstra et al., Int J Rehabil Res 31:165–169, 2008; Price et al., Pain 17:45–56, 1983) pain score for back and leg pain, and the Oswestry Disability Index questionnaire (ODI) (Smeets et al., Arthritis Care Res (Hoboken) 63:S158–S173, 2011).

Results

The results in both the groups did not reveal a significant difference in the clinical outcome assessment of back pain score or ODI. With the Wilcoxon two-sample test, no difference in median values was achieved (p value 0.0787 for ODI and p value 0.1926 for back pain). The average ODI in the Wallis group dropped from 50.93 to 29.11. The average VAS for the Wallis group back pain dropped from 7.79 to 4.22.

Conclusion

The Wallis implant is a safe medical device. This study revealed a reduction in pain and functional disability in patients treated with decompression surgery for lumbar stenosis, with or without Wallis. The Wallis group improved more, but it was not statistically significant. The risk of complications is lower than other interspinous devices [18, 19].  相似文献   
10.
Kabak  Mehmet  Akbudak  Mahir 《Sleep & breathing》2021,25(3):1511-1517
Sleep and Breathing - Obstructive sleep apnea (OSA) is defined as the cessation of respiration due to recurrent and partial or complete blockade of the upper airways during sleep. Nocturnal...  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