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Change of Acoustic Parameters Before and After Treatment in Laryngopharyngeal Reflux Patients
Author(s) -
Jin Bong Joon,
Lee Yong Seop,
Jeong Seung Won,
Jeong Jin Hyeok,
Lee Seung Hwan,
Tae Kyung
Publication year - 2008
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1097/mlg.0b013e3181651c3a
Subject(s) - laryngopharyngeal reflux , reflux , medicine , jitter , ambulatory , prospective cohort study , gastroenterology , disease , electronic engineering , engineering
Objectives: To evaluate the usefulness of acoustic parameters as an indicator of laryngopharyngeal reflux (LPR) treatment efficacy. Study Design: A prospective case series analysis. Materials and Methods: From January to September 2005, we prospectively analyzed 40 patients who were diagnosed with laryngopharyngeal reflux by 24‐hour ambulatory double‐probe pH monitoring. Laryngopharyngeal reflux patients were treated medically and voice analysis was conducted three times: before treatment, 1 to 2 months after treatment, and 3 to 4 months after treatment. Jitter, shimmer, and harmonic‐to‐noise ratio (HNR) were analyzed as the acoustic parameters. Pre‐ and posttreatment reflux symptom index and reflux finding score were documented. Results: Jitter, shimmer, and HNR had improved significantly at 1 to 2 months after treatment and were maintained at 3 to 4 months after treatment. Jitter was significantly correlated with reflux symptom index. Conclusion: Acoustic parameters can be used as indicators of treatment efficacy for laryngopharyngeal reflux disease.