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  • Title: Impact of tonsillectomy with or without adenoidectomy on the acoustic parameters of the voice: a comparative study.
    Author: Subramaniam V, Kumar P.
    Journal: Arch Otolaryngol Head Neck Surg; 2009 Oct; 135(10):966-9. PubMed ID: 19841332.
    Abstract:
    OBJECTIVE: To assess the effects of chronic tonsillitis with or without adenoiditis and the effects of tonsillectomy with or without adenoidectomy on the voice by means of acoustic analysis. DESIGN: Prospective case-control study. SETTING: Yenepoya Medical College Hospital, a tertiary referral hospital. PATIENTS: Patients 5 to 26 years old with chronic tonsillitis with or without adenoiditis. INTERVENTIONS: Tonsillectomies were performed under general anesthesia by surgeons using cold steel instruments via a standard capsular dissection technique, and adenoids were removed by curettage. MAIN OUTCOME MEASURES: Acoustic analysis of 6 parameters (fundamental frequency, jitter, shimmer, harmonics: noise ratio, long-term average spectrum, and nasalance) 4 weeks after surgery compared with 1 day before surgery. RESULTS: Postoperatively, shimmer altered in males, and hypernasality was eliminated in almost all cases. None of the other associations were significant statistically. CONCLUSIONS: Chronic tonsillitis and tonsillar hypertrophy cause alterations in some acoustic measurements, which make the voice dysharmonic and harsh. Tonsillectomy eliminates nasalance and lowers shimmer. Overall, it does not significantly alter dysphonia owing to disease.
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