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A Method to Assess the Accuracy of Sonotubometry for Detecting Eustachian Tube Openings

Identifieur interne : 004633 ( Main/Merge ); précédent : 004632; suivant : 004634

A Method to Assess the Accuracy of Sonotubometry for Detecting Eustachian Tube Openings

Auteurs : J. Douglas Swarts ; Miriam S. Teixeira ; Juliane Banks ; Jenna El-Wagaa ; William J. Doyle

Source :

European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery [ 0937-4477 ] ; 2014.

RBID : PMC:4190102

Descripteurs français

KwdFr :
- Adolescent, Adulte, Adulte d'âge moyen, Déglutition (physiologie), Femelle, Humains, Jeune adulte, Mâle, Pression, Sensibilité et spécificité, Son (acoustique), Tests d'impédance acoustique, Trompe auditive (physiopathologie).
MESH :
- physiologie : Déglutition.
- physiopathologie : Trompe auditive.
- Adolescent, Adulte, Adulte d'âge moyen, Femelle, Humains, Jeune adulte, Mâle, Pression, Sensibilité et spécificité, Son (acoustique), Tests d'impédance acoustique.

English descriptors

KwdEn :
- Acoustic Impedance Tests, Adolescent, Adult, Deglutition (physiology), Eustachian Tube (physiopathology), Female, Humans, Male, Middle Aged, Pressure, Sensitivity and Specificity, Sound, Young Adult.
MESH :
- physiology : Deglutition.
- physiopathology : Eustachian Tube.
- Acoustic Impedance Tests, Adolescent, Adult, Female, Humans, Male, Middle Aged, Pressure, Sensitivity and Specificity, Sound, Young Adult.

Abstract

Objective

Sonotubometry is a simple test for Eustachian tube opening during a maneuver. Different sonotubometry configurations were suggested to maximize test accuracy, but no method has been described for comparing sonotubometry test results with those for a definitive measure of Eustachian tube opening. Here, we present such a method and exemplify is use by an accuracy assessment of a simple sonotubometry configuration.

Methods

A total of 502 data-sequences from 168 test sessions in 103 adult subjects were analyzed. For each session, subjects were seated in a pressure chamber and relative middle ear over- and under-pressures created by changing chamber pressure. At each pressure, the test sequence of bilateral tympanometry, bilateral sonotubometry while the subject swallowed twice, and bilateral tympanometry was done. Tympanometric data were expressed as the fractional gradient equilibrated (FGE) by swallowing and sonotubometric signals were analyzed to record the shape of detected sound-signals. Tympanometric and sonotubometric tubal opening assignments were analyzed by cross-correlation.

Results

For the data-sequences with FGE=0 (n=32) evidencing no tubal opening and 1 (n=249) evidencing definitive tubal opening, detection of a sonotubometry sound-signal during a swallow had a sensitivity and specificity of 74.2% and 65.6% for identifying ET openings and an accuracy of 73.3% for assigning ET opening/non-opening by swallowing. Measures of sound-signal shape were significantly different between those groups.

Conclusions

This protocol allows a sonotubometry accuracy assessment for detecting Eustachian tube openings. For the test configuration used, accuracy was moderate, but this should improve as more sophisticated sonotubometry test configurations are evaluated.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4190102

DOI: 10.1007/s00405-014-3031-5
PubMed: 24710849
PubMed Central: 4190102

Links to Exploration step

PMC:4190102

Le document en format XML

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<author><name sortKey="Banks, Juliane" sort="Banks, Juliane" uniqKey="Banks J" first="Juliane" last="Banks">Juliane Banks</name>
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<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
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<term>Pression</term>
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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Objective</title>
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</sec>
<sec id="S2"><title>Methods</title>
<p id="P2">A total of 502 data-sequences from 168 test sessions in 103 adult subjects were analyzed. For each session, subjects were seated in a pressure chamber and relative middle ear over- and under-pressures created by changing chamber pressure. At each pressure, the test sequence of bilateral tympanometry, bilateral sonotubometry while the subject swallowed twice, and bilateral tympanometry was done. Tympanometric data were expressed as the fractional gradient equilibrated (FGE) by swallowing and sonotubometric signals were analyzed to record the shape of detected sound-signals. Tympanometric and sonotubometric tubal opening assignments were analyzed by cross-correlation.</p>
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<sec id="S3"><title>Results</title>
<p id="P3">For the data-sequences with FGE=0 (n=32) evidencing no tubal opening and 1 (n=249) evidencing definitive tubal opening, detection of a sonotubometry sound-signal during a swallow had a sensitivity and specificity of 74.2% and 65.6% for identifying ET openings and an accuracy of 73.3% for assigning ET opening/non-opening by swallowing. Measures of sound-signal shape were significantly different between those groups.</p>
</sec>
<sec id="S4"><title>Conclusions</title>
<p id="P4">This protocol allows a sonotubometry accuracy assessment for detecting Eustachian tube openings. For the test configuration used, accuracy was moderate, but this should improve as more sophisticated sonotubometry test configurations are evaluated.</p>
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A Method to Assess the Accuracy of Sonotubometry for Detecting Eustachian Tube Openings

A Method to Assess the Accuracy of Sonotubometry for Detecting Eustachian Tube Openings

Source :

Descripteurs français

English descriptors

Abstract

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Links to Exploration step

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