Videofluoroscopic Examination of Swallowing Using the AsR Score for Postoperative Swallowing Function in Oral Cancer Patients

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  • Suzuki Motoyuki
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Fujii Takashi
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Yoshii Tadashi
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Otozai Shinji
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Kida Kohta
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Sugawa Toshimitsu
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Kitamura Koji
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Kanamura Ryo
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases
  • Koike Ryosuke
    Department of Otolaryngology, Head and Neck Surgery Osaka Medical Center for Cancer and Cardiovascular Diseases

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Other Title
  • 嚥下造影簡易評価法 (AsR スコア) を用いた口腔癌術後の機能評価
  • エンカゾウエイ カンイ ヒョウカホウ(AsR スコア)オ モチイタ コウコウ ガン ジュツゴ ノ キノウ ヒョウカ

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Abstract

To evaluate the postoperative swallowing function in head and neck cancer patients, videofluoroscopic examination of swallowing (VF) proved useful as a qualitative evaluation, but was complex as a quantitative evaluation. We made use of the AsR score which consisted of a 10-point scale as a quantitative evaluation of VF. To identify the usefulness of the AsR score, 146 patients who had undergone extensive resection and reconstruction with free flaps or pedicle grafts were reviewed.<br>　The AsR score of VF for the first time after surgery was defined as “first score”, and at the last time in the hospital was defined as “last score”. The correlations between the first score and continuity of direct therapy, and between the last score and way of nutrition at the time of discharge were examined. Using the ROC (receiver operator characteristic) analysis and the AUC (area under the curve) the cut-off values of the AsR score were estimated.<br>　One hundred and thirty one patients could continue direct therapy after the first time of VF. The first score detected continuity of direct therapy with high accuracy (AUC=0.946), furthermore using a cut-off of 5, the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were about 96.2%, 86.6%, 98.4%, and 72.2%, respectively. At the time of discharge, 138 patients had no limitation of oral intake and 8 patients had a limitation e.g. PEG (n=7) and a total laryngectomy for preventing aspiration (n=1). The last score detected oral intake ability with no limitation with high accuracy (AUC=0.925). Using a cut-off of 6, the sensitivity, specificity, PPV and NPV were about 82.6%, 87.5%, 99.1% and 22.6%, respectively.<br>　The AsR score is useful as a quantitative evaluation of postoperative swallowing function in oral cancer patients.

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