Investigation of Surgical Closure of the Larynx by Removal of Cricoid Cartilage (Kano's Method)

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  • Muto Kaori
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University
  • Kato Hisayuki
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University
  • Mori Shigeaki
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University
  • Iwamoto Shogo
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University
  • Iwata Yoshihiro
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University
  • Hori Ryusuke
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health
  • Tateya Ichiro
    Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Fujita Health University

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Other Title
  • 輪状軟骨鉗除を併用した鹿野式声門閉鎖術の検討
  • リンジョウ ナンコツケンジョ オ ヘイヨウ シタ シカノシキ セイモン ヘイサジュツ ノ ケントウ

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<p>Patients with neurodegenerative diseases and children with severe mental and physical disabilities are often managed with tracheostomy tubes due to repeated aspiration pneumonia. Longterm tracheostomy tube placement increases the risk of complications and requires frequent sputum suctions by caregivers, making institutionalization and the introduction of home care difficult. Surgical closure of the larynx is a useful technique that can avoid pneumonia, decrease the frequency of sputum suctions, and provide relief from airway management by tracheostomy tube. We investigated the usefulness and safety of 18 cases of surgical closure of the larynx by removal of cricoid cartilage (Kano's method) performed at our department over a 7-year period from April 2015 to March 2022. Except for one patient with unknown postoperative course, cannula withdrawal was possible in 6 of 6 (100%) patients using tubes who were not on respiratory management, and postoperative complications were limited to one case of fistula formation at the glottis closure site. In addition, 3 of 5 patients who were preoperatively unable to take orally were able to ingest orally postoperatively, and one patient was on alternative nutrition but was able to take oral intake. A survey of caregivers showed a decrease in the frequency of sputum suctions in most cases, and 75% of them expressed satisfaction with the results of the surgery. As a result, we believe this technique is useful and safe for patients with repeated severe aspiration pneumonia in terms of airway management without a tracheostomy tube.</p>

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