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  • Title: Bilateral Cerebellar Intermittent Theta Burst Stimulation Combined With Swallowing Speech Therapy for Dysphagia After Stroke: A Randomized, Double-Blind, Sham-Controlled, Clinical Trial.
    Author: Rao J, Li F, Zhong L, Wang J, Peng Y, Liu H, Wang P, Xu J.
    Journal: Neurorehabil Neural Repair; 2022 Jul; 36(7):437-448. PubMed ID: 35574927.
    Abstract:
    BACKGROUND: Previous studies have found that high-frequency repetitive transcranial magnetic stimulation (rTMS) of the cerebellar hemisphere could improve swallowing function, but whether intermittent theta burst stimulation (iTBS), which has similar excitatory effect and higher efficiency, can also improve swallowing function for dysphagia after stroke remains unclear. OBJECTIVE: This trial aimed to explore the efficacy and safety of bilateral cerebellar transcranial magnetic stimulation with iTBS for dysphagia after stroke. METHODS: Seventy patients with dysphagia after stroke were divided into 2 treatment groups: true bilateral cerebellar iTBS and sham bilateral cerebellar iTBS. The true iTBS group underwent ten 100% resting motor threshold (RMT) iTBS sessions for 2 weeks. In the sham iTBS group, the parameters were the same except that the figure-eight coil was perpendicular to the skull. Both groups received traditional swallowing rehabilitation treatment 5 times a week for 2 weeks. Swallowing function was assessed with the Fiberoptic Endoscopic Dysphagia Severity Scale (FEDSS), Penetration/Aspiration Scale (PAS), Standardized Swallowing Assessment (SSA), and Functional Oral Intake Scale (FOIS) at baseline, 2 weeks after the intervention, and at 4 weeks of follow-up. RESULTS: There were significant time and group interaction effects in both multi-factorial adjusted and unadjusted FEDSS, PAS, SSA, and FOIS score (P < .001). In the pairwise comparison of the swallowing parameters among the 2 groups, the FEDSS, PAS, SSA, and FOIS scores at 2 weeks and 4 weeks showed a significantly higher improvement in the iTBS simulation group than sham group (P < .05). In both the true iTBS and sham iTBS stimulation groups, all FEDSS, PAS, SSA, and FOIS scores were significantly improved over time (P < .001). CONCLUSIONS: The present study suggested that as a more efficient TMS stimulation mode, iTBS could efficiently improve swallowing function by stimulating the bilateral cerebellar hemisphere. In addition, 100% resting motor threshold bilateral cerebellar iTBS is a relatively safe treatment. CLINICAL TRIAL REGISTRATION: Effect analysis of repeated transcranial magnetic stimulation of cerebellar on dysphagia after stroke. www.chictr.org.cn. Identifier: ChiCTR2100042092.
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