| Objective:To observe and evaluate the therapeutic effect of repetitive transcranial magnetic stimulation(rTMS)on the balance dysfunction in patients with posterior circulation stroke.Methods:30 patients with posterior circulation stroke were randomly divided into treatment group and sham stimulation group(15 cases each group).Two groups were with1 Hz rTMS on the precentral gyrus motor cortex.At three time points,before treatment,immediately after treatment and two weeks after treatment,the University of Tokyo balance scale,SI and WDI index of Tetrax balance test,MEP threshold of TMS were respectively used to evaluate the balance function of patients.Results:Immediately after treatment compared with before treatment,two groups of patients with balance function scores were significantly higher than those before treatment(P<0.05),and the Tetrax balance index of treatment group with eyes closed is better than that of sham stimulation group(P < 0.05);At the same time,there was a significant difference between the two groups of motor cortex MEP threshold(P<0.01).Two weeks after the treatment,the balance function scores of the two groups were improved gradually compared with those before treatment(P < 0.01),and the treatment group was significantly higher than that in sham stimulation group(P<0.05);stimulately the Tetrax balance index of the treatment group was significantly better than that of the sham stimulation group(P<0.01),and the MEP threshold of the treatment group was significantly higher than that of the sham stimulation group(P<0.01).Conclusion: Low frequency rTMS can inhibit the abnormal excitability of precentral gyrus motor area,and improve the balance function of patients with posterior circulation stroke,which has clinical value in rehabilitation. |
