Sarcopenic Dysphagia Reconsidered: A Systematic Review of Complex Interactions and Diagnostic Challenges.

The review included only studies that used and defined the term sarcopenic dysphagia, so work using other names may have been missed. The included studies varied widely in design, setting, patient conditions, diagnostic criteria and assessment tools, so they could not be combined into a single reliable diagnostic standard. Most evidence was cross-sectional or observational, and the review also included 11 case reports, so it cannot establish that sarcopenia causes dysphagia. Many participants had conditions such as stroke, cancer, Parkinson’s disease or pneumonia that can independently affect swallowing, so causal attribution to sarcopenia is ambiguous. Dysphagia was often measured by intake scales rather than instrumental swallowing studies, so reduced intake due to appetite, alertness or general condition may have been counted as dysphagia. Tongue pressure thresholds may not be comparable across devices because JMS and IOPI use different measurement mechanics.

Do not conclude that sarcopenia causes dysphagia or that treating sarcopenia will improve swallowing. The review found inconsistent definitions, mostly observational and case-report evidence, and many included patients had stroke, cancer, Parkinson’s disease, pneumonia or other conditions that can independently impair swallowing.