Authors: Blumenfeld L, Hahn Y, Lepage A, Leonard R, Belafsky PC
Title: Transcutaneous electrical stimulation versus traditional dysphagia therapy: a nonconcurrent cohort study
Source: Otolaryngology - Head and Neck Surgery 2006 135(5): 754-757
Year: 2006
Research Design: Non Randomised Controlled Trial
Rating Score: 04/10
This rating is confirmed
Eligibility specified - N
Random allocation - N
Concealed allocation - N
Baseline comparability - Y
Blind subjects - N
Blind therapists - N
Blind assessors - N
Adequate follow-up - Y
Intention-to-treat analysis - N
Between-group comparisons - Y
Point estimates and variability - Y

OBJECTIVE: The purpose of this investigation was to critically evaluate the efficacy of electrical stimulation (ES) in treating persons with dysphagia and aspiration. STUDY DESIGN: Nonconcurrent cohort study. METHODOLOGY: The charts of 40 consecutive individuals undergoing ES and 40 consecutive persons undergoing traditional dysphagia therapy (TDT) were reviewed. Pre- and post-therapy treatment success was compared utilizing a previously described swallow severity scale. A linear regression analysis was employed to adjust for potential confounding variables. RESULTS: The swallow severity scale improved from 0.50 to 1.48 in the TDT group (P < 0.05) and from 0.28 to 3.23 in the ES group (P < 0.001). After adjusting for potential confounding factors, persons receiving ES did significantly better in regard to improvement in their swallowing function than persons receiving TDT (P = 0.003). CONCLUSIONS: The results of this nonconcurrent cohort study suggest that dysphagia therapy with transcutaneous electrical stimulation is superior to traditional dysphagia therapy alone in individuals in a long-term acute care facility.

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