Vocal Dynamic Studies before and after Laryngeal Microsurgery.
- Author:
Young Mo KIM
1
;
Jung Il CHO
;
Chul Ho KIM
;
Young Jin KIM
;
Hyun Roung HA
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Inha University, Inchon, Korea.
- Publication Type:Original Article
- Keywords:
Microlaryngeal surgery;
Acoustics;
Aerodynamics;
Benign vocal cord lesions
- MeSH:
Acoustics;
Edema;
Female;
Humans;
Microsurgery*;
Noise;
Phonation;
Polyps;
Prognosis;
Vocal Cords
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
1999;42(9):1174-1178
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND AND OBJECTIVES: Perceptual acoustic measures are most often used to judge the outcomes and the objective analysis of phonosurgical results before and after the microlaryngeal surgery. However, they have rarely been reported in this country. The purpose of this study is to analyze aerodynamic and acoustic results before and after microlaryngeal surgery and to analyze the differences of the prognosis of various benign vocal cord lesions. MATERIALS AND METHODS: At Inha University Hospital, from June 1996 to August 1998, 245 microlaryngeal surgeries were done. Malignant lesions were excluded. And 118 (54 females and 64 males) out of 245 patients were followed up after the surgery: the acoustic and the aerodynamic studies before and 8 weeks after microlaryngeal surgery for benign lesions: vocal polyp, vocal nodule, Reinke's edema, intracordal cyst and hyperkeratosis. Seven measurements were performed: fundamental frequency, jitter, shimmer, noise to harmonic ratio as the acoustic analysis, maximal phonation time, mean flow rate and subglottal pressure as the aerodynamic analyses. RESULTS: Postoperative acoustic and aerodynamic data of vocal polyp, vocal nodule, Reinke's edema and intracordal cyst were improved, but those of hyperkeratosis were not improved. CONCLUSION: By comparing the acoustic and aerodynamic data before and after the microlaryngeal surgery, postoperative vocal function was defined more accurately and objectively. Jitter, shimmer, and MFR might be meaningful parameters accessing the quantitative changes in vocal quality before and after the microlaryngeal surgery.
