Correlations between Dysphagia Severity Scale Scores and Clinical Indices in Individuals with Multiple System Atrophy

Area of Science:

• Neurology
• Clinical Assessment Tools

Background:

• Dysphagia is a significant prognostic factor in Multiple System Atrophy (MSA).
• Limited availability of video-based swallowing assessments necessitates simpler clinical tools.
• The Dysphagia Severity Scale (DSS) offers a practical alternative for evaluating dysphagia.

Purpose of the Study:

• To assess the clinical utility of the DSS in MSA patients.
• To determine correlations between DSS scores and established clinical indices of MSA.
• To evaluate the DSS as a marker for dysphagia progression.

Main Methods:

• 43 MSA patients were evaluated using the DSS and Unified MSA Rating Scale (UMSARS).
• Cerebrospinal fluid 5-hydroxyindoleacetic acid levels and blood pressure were also measured.
• Cross-sectional and longitudinal analyses employed Spearman's correlation and linear mixed models.

Main Results:

• DSS scores significantly correlated with UMSARS (Parts 1, 2, 4), disease duration, and blood pressure.
• The DSS demonstrated sensitivity to motor and autonomic dysfunction in MSA.
• Longitudinal data confirmed DSS as a reliable marker for dysphagia progression.

Conclusions:

• The DSS is a sensitive and practical tool for dysphagia evaluation in MSA.
• Integrating DSS with UMSARS can enhance dysphagia monitoring in MSA.
• The DSS is a valuable tool for both clinical practice and research in MSA management.