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Related Experiment Videos

Botulinum toxin treatment for cricopharyngeal dysfunction.

G Y Shaw1, J P Searl

  • 1Voice and Swallowing Laboratory, Research Medical Center, Kansas City, Missouri 64131, USA. gshaw@kcnet.com

Dysphagia
|July 17, 2001
PubMed
Summary

Botulinum toxin A injections effectively improved swallowing in patients with cricopharyngeal muscle (CPM) hypertonicity and spasticity. This treatment showed greater benefits for those with isolated CPM or cranial nerve X dysfunction.

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Area of Science:

  • Otolaryngology
  • Gastroenterology
  • Neurology

Background:

  • Cricopharyngeal muscle (CPM) hypertonicity/spasticity causes dysphagia, impacting bolus passage.
  • Previous treatments include dilation and myotomy.
  • Botulinum toxin A injections show promise but require further study.

Purpose of the Study:

  • To evaluate the efficacy of botulinum toxin A injections for CPM dysfunction.
  • To assess swallowing improvements using patient and objective measures.

Main Methods:

  • 12 subjects with CPM dysfunction received botulinum toxin A injections.
  • Evaluations included patient symptom ratings, modified barium swallow studies, and manometry.
  • Pre- and post-treatment data were analyzed.

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Main Results:

  • Botulinum toxin A significantly improved swallowing function.
  • Patient and investigator ratings indicated enhanced bolus passage.
  • Greater improvement observed in isolated CPM or cranial nerve X dysfunction.

Conclusions:

  • Botulinum toxin A is an effective treatment for dysphagia due to CPM hypertonicity/spasticity.
  • Treatment outcomes correlate with the specificity of the underlying dysfunction.