Viewing Study NCT00147940



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Study NCT ID: NCT00147940
Status: TERMINATED
Last Update Posted: 2013-06-12
First Post: 2005-09-02

Brief Title: Correlation of Nasal Volume Cross-Sectional Area With Nasalance Scores Measured by Acoustic Rhinometry and Nasometry
Sponsor: University of Chicago
Organization: University of Chicago

Study Overview

Official Title: Correlation of Nasal Volume and Cross-Sectional Area With Nasalance Scores as Measured by Acoustic Rhinometry and Nasometry
Status: TERMINATED
Status Verified Date: 2013-06
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: None
Brief Summary: The purpose of our study is to correlate nasal volume and cross-sectional area with nasalance scores We will measure nasal volume and cross-sectional area with acoustic rhinometry Nasalance scores will be determined by Nasometry

Acoustic rhinometry is a means to study the volume and cross-sectional areas of the nasal cavity in a non-invasive rapid convenient and reliable manner Acoustic rhinometry has the unique advantage of being completely non-invasive and thus is able to measure nasal patency without the confounding effects of probes or invasive monitoring

Nasometry is a technique to measure the oral and nasal components of nasalance Nasalance is the objective measure of the nasal component of speech that is determined by the ratio of sound pressure emitted from the nasal and oral cavities during speech Nasality is the term used to characterize the nasal component of speech and is a subjective measure

Eleven healthy subjects underwent acoustic rhinometry pre and post decongestion using oxymetazoline 005 nasal spray Nasalance scores were based on the readings of three passages rainbow zoo and nasal
Detailed Description: Acoustic rhinometry is a technique that utilizes sound waves to measure nasal patency The reflections of the waves off of the nasal structures allow one to assess the volume and cross sectional area of the nasal cavity It is a non-invasive procedure that can be performed in a rapid convenient and reliable manner There is minimal discomfort for the patient and it can be performed easily in the office There is no distortion of nasal anatomy or functioning as a result of the procedure

Nasometry is a technique to measure the oral and nasal components of nasalance Nasalance is an objective measure of the nasal component of speech that is determined by the ratio of acoustic pressures emitted from the nasal and oral cavities Nasality is the term used to characterize the nasal component of speech and is a subjective measure

The Nasometer Kay Elemetrics Corp Lincoln Park NJ is a computer-based device that analyzes acoustic energy that is emitted from the oral and the nasal cavity during speech It consists of two microphones that are separated by a plate The upper microphone measures nasally emitted acoustic energy and the lower microphone measure the acoustic energy emitted from the oral cavity

Nasalance is an important measure in speech pathology In situations where velopharyngeal competence is in question nasometry objectively documents the nasal component of speech as normal hypemasal or hyponasal It has been found to be of tremendous benefit in the management of patients with cleft palate and velopharyngeal incompetence The subject is relaxed and is fitted with a headgear apparatus This apparatus is placed such that a plate lies in a horizontal plane that rests midway between the nose and the mouth There are microphones on the upper and lower surfaces of the plate that capture sound energy produced from the nasal and oral cavities respectively The subject is then asked to read standard passages The three most commonly used passages are described here and will be used in our study The Rainbow passage is most representative of standard English speech The Zoo passage has no nasal consonants and the Nasal passage has the highest number of nasal consonants

While the subject is reading the microphone captures sound pressure levels which are emitted from the nasal and the oral cavities This data is analyzed by the attached computer and presented graphically The computer also provides a nasalance score for each of three above- mentioned passages Normative data is available for each of these passages for adults and children By comparing the data obtained from the subject with the normative means and standard deviations the investigator can categorize the subjects voice as normal hyponasal or hypernasal The nasalance score that is generated can also be used to monitor the efficacy of speech therapy and surgical interventions

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: None
Is a FDA Regulated Device?: None
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None