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Mylohyoid motor evoked potentials can effectively predict persistent dysphagia 3 months poststroke

K M Lee1, M C Joo1, Y M Yu1

  • 1Department of Rehabilitation Medicine, Wonkwang University School of Medicine, Iksan, Korea.

Neurogastroenterology and Motility
|March 14, 2018
PubMed
Abstract

Insights

Mylohyoid motor-evoked potentials (MH-MEP) effectively predict post-stroke aspiration. Specific MH-MEP ratios correlate with swallowing severity, aiding in identifying patients at risk for persistent dysphagia.

Area of Science:

  • Neurology
  • Swallowing Disorders
  • Biomedical Engineering

Background:

  • Stroke frequently causes dysphagia, leading to aspiration and increased morbidity.
  • Accurate prediction of aspiration risk is crucial for timely intervention and improved patient outcomes.

Purpose of the Study:

  • To investigate the association between mylohyoid motor-evoked potentials (MH-MEP) and swallowing function.
  • To determine the predictive value of MH-MEP for aspiration 3 months post-stroke.

Main Methods:

  • Subacute stroke patients underwent serial videofluoroscopic swallowing studies (VFSS) and MH-MEP assessments.
  • MH-MEP parameters (resting motor threshold, amplitude ratios) were recorded and analyzed.
  • Correlation and regression analyses were performed to link MH-MEP with VFSS-based swallowing scales (PAS, VDS).

Main Results:

  • 35.3% of patients exhibited aspiration at 3 months post-stroke.
  • MH-MEP parameters, specifically the resting motor threshold ratio and amplitude ratio, significantly correlated with swallowing impairment (PAS, VDS).
  • The resting motor threshold ratio and amplitude ratio independently predicted aspiration at 3 months, with high sensitivity and specificity.

Conclusions:

  • MH-MEP is a valuable tool for assessing swallowing function in post-stroke patients.
  • MH-MEP parameters, particularly the rMT ratio and amplitude ratio, can effectively predict persistent dysphagia 3 months after stroke.
Keywords:
deglutition disordersmotor evoked potentialsneck muscleprognosisstroke

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