Objective To objectively evaluate the effectiveness of Tai Chi in fall prevention and balance function in the elderly. Methods Databases such as PubMed, Web of Science, The Cochrane Library (Issue 8, 2012), EMbase, CBM, CNKI, VIP and WanFang Data were electronically searched to collect the randomized controlled trials (RCTs) published from 2000 to 2012, and the relevant references of the included articles were also manually searched. According to the inclusion and exclusion criteria, the literature was screened, the data were extracted and the methodological quality of the included studies was assessed. Then meta-analyses were performed by using RevMan 5.1 software. Results A total of 6 RCTs involving 2 796 participants were included. The results of meta-analyses showed that the Tai Chi group was superior to the control group in decrease of the incidence rate of fall (RR=0.82, 95%CI 0.73 to 0.92, P=0.000 6), Timed Up and Go Test (MD=0.71, 95%CI 0.29 to 1.12, P=0.000 9), Functional Reach Test (MD=0.78, 95%CI 0.33 to 1.23, P=0.000 7) and Berger Balance Scale (MD=2.45, 95%CI 1.47 to 3.43, Plt;0.000 01), and there were statistical differences. Conclusion Tai Chi can effectively reduce the risk of fall for the elderly and improve their balance function.
摘要:目的: 探讨二维及彩色多普勒超声对妊娠合并卵巢扭转的诊断价值。 方法 :对11例经手术及病理证实的妊娠合并单纯卵巢扭转,进行二维及彩色多普勒和能量多普勒超声图像分析。 结果 :11例患侧卵巢在二维图像中均有不同程度的肿大,超声压痛征均呈阳性反应;其中7例有明显的位置改变,5例有不同程度的盆腔积液;彩色多普勒和能量多普勒显示患侧卵巢内部均无明显血流信号。 结论 :妊娠期卵巢扭转有典型超声图象特征,可为临床提供较可靠的诊断依据。Abstract: Objective: To evaluate the diagnostic value of two dimension ultrasound (2DUS), color Doppler flow imaging (CDFI) and power Doppler imaging (PDI) for ovarian torsion during the pregnant period.〖WTHZ〗Methods : Using the techniques of 2DUS, CDFI and PDI to analyze sonographic features of 11 ovarian torsion cases which were dominated by operation and pathology.〖WTHZ〗Results : The tumescent sick ovaries were detected in all case with ovaries torsion by 2DUS. The patient felt pain when their sick ovaries were pressed. The position of seven sick ovaries was changed. The pelvic effusion was detected in five cases. The blood flow signal was not demonstrated in all sick ovaries by CDFI and DPI.〖WTHZ〗Conclusion : The ultrasonic imaging characteristics are reliable to diagnose ovarian torsion during the pregnant period.
Objective To systematically evaluate the orthotic effect of functional electrical stimulation (FES) on the improvement of walking in stroke patients with foot drop. Methods The randomized controlled trials (RCTs) that investigated the orthotic effect of FES on walking in stroke patients with foot drop were electronically searched in the databases such as PubMed, Web of Science, The Cochrane Library (Issue 1, 2013), EMbase, CBM, CNKI, VIP and WanFang Data from January 2000 to January 2013, and the relevant references of included papers were also manually searched. Two reviewers independently screened the trials according to the inclusion and exclusion criteria, extracted the data, and assessed the methodology quality. The meta-analyses were performed using RevMan 5.1 software. Results A total of 8 RCTs involving 255 patients were included. The results of meta-analyses on 4 RCTs showed that, compared with the conventional rehabilitation intervention, the functional electrical stimulation could significantly improve the walking speed, with significant difference (MD=0.09, 95%CI 0.00 to 0.18, P=0.04). The other indicators were only descriptively analyzed due to the incomplete data. Conclusions Functional electrical stimulation is effective in improving walking speed, but it is uncertain of other therapeutic indicators. So it should be further proved by conducting more high quality, large sample and multi-center RCTs.