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KMID : 0384020100210010048
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Journal of the Korean Society of Logopedics and Phoniatrics
2010 Volume.21 No. 1 p.48 ~ p.53
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The Difference between Acoustic Characteristics of Acute Epiglottitis and Peritonsillar Abscess
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Lee Nam-Hoon
Lee Jae-Yeon
Lee Sang-Hyuk
Choi Jung-Im
Song Yun-Kyung
Jin Sung-Min
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Abstract
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Backgraound and Objectives : The voice change can occur in acute epiglottitis or peritonsillar abscess, and the labelings of both changes as a "muffled voice" or "hot potato voice", The aim of this study was to investigate the difference of changes in acoustic feature of voice before and after treatment in patients with acute epiglottitis or peritonsillar abscess.
Subjects and Method: 13 patients with acute epiglottitis and 12 patients with peritonsillar abscess were enrolled in the study. Acoustic analysis on sustained Korean vowels //, /u/ and /i/ were performed before and after treatment.
Results: In patients with acute epiglottitis, the first formant frequency (F1) of // was increased, and the second frequency (F2) of /i/ was decreased. In patients with peritonsillar abscess, F1 and F2 of // were decreased. F1 of /i/ and /u/ were increased, while F2 were decreased.
Conclusion : The anatomical and functional changes of oropharynx and larynx by acute epiglottitis and peritonsillar abscess can cause different change in resonance and speech quality. We suggest that these changes could be the cause of ’muffled vocie’ in patients of acute epiglottitis or peritonsillar abscess, but different characteristics of phonation in each disease should be distinguished.
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KEYWORD
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Acute epiglottitis, Peritonsillar abscess, Formant, Muffled voice
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