Analysis of Pre and Post-Operative Speech In Combined Operation of Type I Thyroplasty and Arytenoid Adduction for Unilateral Vocal Cord Palsy

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J Korean Soc Laryngol Phoniatr Logop > Volume 9(1); 1998 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 1998;9(1): 66-70.

편측성대마비에 대한 제 1형 갑상성형술과 피열연골내전술의 동시수술시 술전 및 술후 음성언어분석비교

연세대학교 의과대학 이비인후과학교실, 음성언어의학연구소

Analysis of Pre and Post-Operative Speech In Combined Operation of Type I Thyroplasty and Arytenoid Adduction for Unilateral Vocal Cord Palsy

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ABSTRACT

Background and Objectives
: The managements of unilateral vocal cord palsy include type Ⅰ thyroplasty and arytenoid adduction. One type operation has been shown no satisfactory effect. We evaluated preoperative and postoperative speech of unilateral vocal cord palsy patients who received combined operation of type Ⅰ thyroplasty and arytenoid adduction to help for the management plan of unilateral vocal cord palsy patients.
Materials and Method
s : We reviewed the postoperative results and complication of 17 surgically treated patients of unilateral vocal cord palsy at Severance hospital from Nov. 1996 to Dec. 1997 retrospectively. They were received combined operation of type Ⅰ thyroplasty and arytenoid adduction. Their pre and post-operative speech were analyzed with MDVP(Multi-Dimension-Voice analysis Program) of CSL(Computerized Speech Lab).
Results
: After the operation, MPT(Maximal Phonation Time) was increased and MFR(Mean Flow Rate) was decreased in all patients. NHR(Noise to Harmonic Ratio) and VTI(Voice Turbulence Index) were decreased : liner, RAP(Relative Average Perturbation Quotient), PPQ(Pitch Period Perturbation Quotient), sPPQ(smoothed Pitch Period Perturbation Quotient), vFo(fundamental frequency Variation) were decreased : Shimmer, APQ(Amplitude Perturbation Quotient), sAPQ(Smoothed Amplitude Perturbation Qoutient), vAm(Peak Amplitude Variation) were decreased in all the patients.
Conclusion
s : In unilateral vocal cord pals), combined operation of type Ⅰ thyroplasty and arytenoid adduction could obtain satisfactory postoperative voice. MDVP has many parameters and good method for evaluation of voice surgery.

KEY WORDS： Arytenoid adduction;Type I thyroplasty;Unilateral vocal cord palsy;