Neurological Sciences

, Volume 33, Issue 4, pp 765–770 | Cite as

A dysphagia study in patients with sporadic inclusion body myositis (s-IBM)

  • Ken-ya MurataEmail author
  • Ken Kouda
  • Fumihiro Tajima
  • Tomoyoshi Kondo
Original Article


The nature of the swallowing impairment in patients with sporadic inclusion body myositis (s-IBM) has not been well characterized. In this study, we examined ten consecutive s-IBM patients using videofluoroscopy (VF) and computed pharyngoesophageal manometry (CPM). The patients were divided into two groups: patients with complaint and without complaint of dysphagia. VF results indicated pharyngeal muscle propulsion (PP) at the hypopharyngeal and upper esophagus sphincter (UES) in all s-IBM patients. Patients without complaint of dysphagia showed a mild degree of PP, whereas a severe form of PP was observed in patients with complaint of dysphagia. CPM revealed that negative pressure during UES opening was not observed in the s-IBM patients with complaint of dysphagia. Incomplete opening and PP at the UES were observed in all s-IBM patients. These results indicate that the dysphagic processes occur subclinically in s-IBM patients who may not report swallowing impairments.


Inclusion body myositis Videofluoroscopy Pharyngoesophageal manometry Pharyngeal muscle propulsion Upper esophagus sphincter 


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Ken-ya Murata
    • 1
    Email author
  • Ken Kouda
    • 2
  • Fumihiro Tajima
    • 2
  • Tomoyoshi Kondo
    • 1
  1. 1.Department of NeurologyWakayama Medical UniversityWakayamaJapan
  2. 2.Department of Rehabilitation MedicineWakayama Medical UniversityWakayamaJapan

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