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KMID : 1022420160080030039
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Phonetics and Speech Sciences
2016 Volume.8 No. 3 p.39 ~ p.48
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Aerodynamic features in patients with vocal polyps before & after laryngomicrosurgery
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Kang Young-Ae
Chang Jae-Won
Koo Bon-Seok
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Abstract
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The present study examined the change of aerodynamic features after laryngomicrosurgery in patients with vocal polyps. Aerodynamic evaluation was performed in thirty-nine patients (15 males and 24 females) one week before surgery and four weeks after surgery. Evaluation protocols of vital capacity, maximum sustained phonation(MXPH), and voicing efficiency(VOFT) were used to collect 29 phonatory aerodynamic measures, requiring voice with a comfortable pitch and loudness. Statistically significant changes were found for phonation time and airflow values in the MXPH protocol, while changes were also found for airflow values, subglottal pressure values and acoustic resistance values in the VOFT protocol. Although phonation time was increased in both male and female patients, gender-dependent changes were found in airflow measurements. Men’s phonation time increased with no difference in airflow rate, but women’s phonation time increased with decreased airflow rate and lower subglottal pressure. The changes of aerodynamic features may be affected by women's self-perceived change for vocal attitude, which was reducing sense of vocal effort after surgery.
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KEYWORD
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aerodynamic evaluation, laryngomicrosurgery, vocal polyps, voice
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