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Comparison of mean airflow rate before and after treatment in patients with sulcus vocalis according to aerodynamic analysis methods

성대구증 환자의 공기역학적 검사 방법에 따른 치료 전과 후의 평균호기류율 비교

  • Seung Yeon Lee (Department of Otorhinolaryngology, Yongin Severance Hospital, Yonsei University) ;
  • Hong-Shik Choi (Jeil ENT) ;
  • Jaeock Kim (Major in Speech Pathology Education, Graduate School of Education, Kangnam University)
  • 이승연 (연세대학교 용인세브란스병원 이비인후과) ;
  • 최홍식 (제일이비인후과) ;
  • 김재옥 (강남대학교 교육대학원 언어치료교육전공)
  • Received : 2023.11.17
  • Accepted : 2023.12.11
  • Published : 2023.12.31

Abstract

Sulcus vocalis is characterized by incomplete closure of the vocal folds, with a high mean airflow rate (MFR) as a distinctive feature. The MFR is measured using two aerodynamic analysis methods [the maximum sustained phonation protocol (MXPH) and voicing efficiency protocol (VOEF)] of the phonatory aerodynamic system (PAS), and the results may vary depending on the method. This study compared the differences in MFR before and after treatment (microsurgery and voice therapy) according to the MXPH and VOEF of the PAS in 30 patients with sulcus vocalis. Additionally, we examined whether there were differences in the subjective voice evaluation (voice handicap index, VHI), perceptual voice evaluation (GRBS), and fundamental frequency (F0) before and after treatment. The results showed significant differences between the two methods, both before and after treatment, in patients with sulcus vocalis. However, there were no significant differences by methods in the changes before and after treatment. The VHI and GRBS scores significantly decreased after treatment; however, F0 showed no significant differences before and after treatment. This study indicates that when evaluating MFR changes in patients with sulcus vocalis, it is acceptable to use either aerodynamic analysis (MXPH or VOEF).

성대구증은 불완전 성대폐쇄부전으로 평균호기류율(mean airflow rate, MFR)이 높은 것이 특징이다. MFR은 phonatory aerodynamic system(PAS)의 두 공기역학적 검사 방법(MXPH, VOEF)으로 측정하며, 두 검사 방법에 따라 결과가 다르게 나타날 수 있다. 본 연구는 성대구증 환자 30명을 대상으로 PAS의 MXPH, VOEF 프로토콜에 따른 MFR의 치료 전과 후 차이, 치료 전후 변화량 간의 차이가 있는지 비교하였다. 그리고 치료 전과 후의 Voice handicap index(VHI), GRBS 및 기본주파수(F0)를 비교하였다. 연구결과, 성대구증 환자의 치료 전과 후 모두에서 검사 방법 간에 유의한 차이가 나타났으나 치료 전후의 변화량은 유의한 차이가 없었다. VHI와 GRBS는 치료 전에 비해 치료 후에 유의하게 감소하였으나 F0는 치료 전과 후에 유의한 차이가 없었다. 본 연구를 통해 성대구증 환자의 치료에 따른 MFR 변화를 평가할 때, 두 공기역학적 검사 방법(MXPH, VOEF) 중 어떠한 검사 방법을 사용해도 된다는 것을 알 수 있다.

Keywords

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