Pre-operative and post operative comparison of patients with benign vocal cord mass lesions with stroboscopy, voice analysis and voice handicap index.

George, Thomas (2007) Pre-operative and post operative comparison of patients with benign vocal cord mass lesions with stroboscopy, voice analysis and voice handicap index. Masters thesis, Christian Medical College, Vellore.

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Abstract

Benign vocal cord mass lesions such as polyps, nodules and cysts affect voice production. They occur secondary to voice abuse or due to chronic sinusitis and laryngopharnyngeal reflux. These conditions lead to chronic inflammatory changes in the vocal cord which can progress to polyp or granuloma formation. The diagnosis of these conditions may be made by indirect laryngoscopy or flexible nasopharyngolaryngoscopy. The objective measurement of the degree of pathology in the vocal folds is performed by using various parameters of videostrobosocopic examination. A comparison of pre operative and post operative changes in the vocal folds can show the degree of improvement. Voice analysis is another method of subjectively assessing the voice changes produced by pathologies affecting the vocal cord. Videostrobosocopic examination may also be combined with analysis of voice parameters assess the improvement or worsening of voice after surgery. The present study is aimed at examining the objective and subjective parameters using stroboscopy, voice analysis and VHI of patients undergoing surgery for vocal fold lesions which are benign in nature. AIMS: 1.To compare the pre and post operative changes in the voice of patients with benign lesions of the vocal cord using stroboscopy. 2. To compare the pre and post operative changes in the voice of patients with benign lesions of the vocal cord using voice analysis. 3. To assess subjective improvement of their voice after surgery using the voice handicap index pre and post operatively. CONCLUSION: 1) The vibratory pattern of the vocal cords improved evidenced by the stroboscopic parameters symmetry, mucosal wave and glottic closure. 2) The voice quality parameters assessed by acoustic analysis showed an improvement following surgery. Significant improvement was noted only in Standard deviation pitch in low intensity /a/, Shimmer in low intensity /a/, harmonic to noise ratio for low intensity /a/, harmonic to noise ratio for low intensity /e/. 3) The Voice handicap index, reflecting the patient’s perception of the voice problems showed a decrease in scores post operatively.

Item Type: Thesis (Masters)
Uncontrolled Keywords: pre-operative; post operative; comparison; benign vocal cord mass lesions; stroboscopy; voice analysis; voice handicap index
Subjects: MEDICAL > Otolaryngology
Depositing User: Devi S
Date Deposited: 10 Jul 2017 12:00
Last Modified: 10 Jul 2017 12:00
URI: http://repository-tnmgrmu.ac.in/id/eprint/1342

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