Hypernasality and velopharyngeal impairment.

Abstract:

:Although the primary cause of hypernasality is impaired velopharyngeal (VP) function, a variety of other factors influence the outcome perceived by the listener. The purpose of the current study was to assess the relationship between oral-nasal resonance balance and (1) velopharyngeal orifice area; (2) nasal airflow rate; and (3) duration of nasal airflow. The pressure-flow technique was used to estimate VP area and measure nasal airflow rate and duration. Ratings of oral-nasal balance were made on a 6-point equal-appearing interval scale. Results indicated a moderate correlation between hypernasality rating and VP area (0.66), nasal airflow (0.61), and nasal airflow duration (0.53). Adults tended to be perceived as more hypernasal than children for a given degree of VP impairment. Finally, when the degree of VP opening was small, perceived oral-nasal resonance balance appeared to be related to duration of the opening-closing movements.

authors

Warren DW,Dalston RM,Mayo R

doi

10.1597/1545-1569_1994_031_0257_havi_2.3.co_2

subject

Has Abstract

pub_date

1994-07-01 00:00:00

pages

257-62

issue

4

eissn

1055-6656

issn

1545-1569

journal_volume

31

pub_type

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