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Rheological evaluation of the bolus flow on the tongue base

Research Project

Project/Area Number 17591977
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Pathobiological dentistry/Dental radiology
Research InstitutionAsahi University

Principal Investigator

KATSUMATA Akitoshi  Asahi University, School of Dentistry, Associate Professor, 歯学部, 助教授 (30195143)

Co-Investigator(Kenkyū-buntansha) IIDA Yukihiro  Asahi University, School of Dentistry, Research Assistant, 歯学部, 助手 (60350873)
FUJISHITA Masami  Asahi University, School of Dentistry, Professor, 歯学部, 教授 (50028809)
TANIMOTO Keiji  Hiroshima University, Graduate School of Biomedical Sciences, Professor, 大学院医歯薬総合研究科, 教授 (10116626)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsswallowing disorder / rheology / videofluoroscopic examination / aspiration / 放射線 / ビデオ嚥下造影 / レオロジー / 咽頭 / 誤嚥
Research Abstract

The first role of video fluoroscopic swallowing examination (VF) for patients with dysphagia is to diagnose aspiration. Simultaneously, compensatory feeding postures and changed food properties are tested during the sequence of VF examination.
The compensatory postural maneuvers are applied to reduce posterior spillage of food and improve pharyngeal clearance. By modifying the consistency and texture of foods and fluids, the risks of aspiration are decreased.
In our dental hospital, patients including cerebral palsy, after stroke, and after treatment for oral cancer were received VF examination. To provide adequate compensatory strategies, each patient's familiar foods were used as the VF test material. VF examinations were performed along patient's daily routine feeding process and posture. In addition, food texture analyzer was used to measure stickiness, hardness, and cohesiveness property of test materials. It should be noted that soft pureed foods have variation in the texture. Sticky paste diet may reduce the risk of aspiration. However it is difficult for damaged oral-pharyngeal motor function to transport such a diet.
To study the flow velocity and direction of various food boluses, a VF simulation system using a life-size oral-pharyngeal model based on CT image data as a phantom was designed. Simulation system enables to check the behavior of spilled bolus into the pharynx without patient's irradiation. This study revealed that reclined feeding position increases the risk of liquid aspiration following posterior spillage.
To feed their patient safely, caregivers are eager for practical suggestions based on VF examination. Several useful advices can be given regarding feeding posture, consistency and texture of foods and drinks, volume of a mouthful of food, oral care and others. Although some hospital using a standardized VF protocol for all patients, advantages of more functional tailor-made studies are obvious.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (3 results)

All 2005

All Journal Article (3 results)

  • [Journal Article] 舌背斜面を不随意滑落する食塊の動態に関するVF画像的検討2005

    • Author(s)
      飯田幸弘, 勝又明敏, 藤下昌己
    • Journal Title

      日本摂食・嚥下リハビリテーション学会雑誌 9 (3)

      Pages: 255-264

    • NAID

      130007961850

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] VF evaluation of the speed of bolus flow on the tongue base2005

    • Author(s)
      Yukihiro Iida, Akitoshi katsumata, Masami Fujishita
    • Journal Title

      The Japanese Journal of Dysphagia Rehabilitation 9(3)

      Pages: 255-264

    • NAID

      130007961850

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 舌背斜面を不随意滑落する食塊の動態に関するVF画像的検討2005

    • Author(s)
      飯田 幸弘
    • Journal Title

      日本摂食・嚥下リハビリテーション学会雑誌 9(3)

      Pages: 255-264

    • NAID

      130007961850

    • Related Report
      2005 Annual Research Report

URL: 

Published: 2005-04-01   Modified: 2016-04-21  

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