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Recruitment logistics
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The investigators will recruit up to 12 subjects to account for screen failures. Once 8 eligible subjects are enrolled (4 per group), then enrollment will end.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Vocal Cord Atrophy | Experimental | Quantify changes in aerodynamic and aeroacoustics patterns in patients with vocal cord atrophy (VCA) before and after voice therapy. To evaluate changes, subjects will have Laryngovideostroboscopy, Acoustic/Auerodynamic testing, and Cone Beam CT scans of the larynx before and after voice therapy. |
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| Healthy Volunteer | Active Comparator | Develop a validated computational model for assessing normative laryngeal aerodynamic and aeroacoustic patterns in healthy elderly individuals. To assess normal laryngeal aerodynamic and aeroacoustic patterns in this cohort, subjects will subjects will have Laryngovideostroboscopy, Acoustic/Auerodynamic testing, and Cone Beam CT scans of the larynx. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cone Beam Computed Tomography | Other | Cone Beam CT of the larynx |
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| Measure | Description | Time Frame |
|---|---|---|
| Change in acoustic/aerodynamic quantities as measured by the Phonatory Aerodynamic System | Composite score of vital capacity, mean airflow rate, laryngeal airway resistance, maximum phonation duration, sound pressure level, frequency, aerodynamci dfficiency | Baseline, 12 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Quantify changes in aerodynamic and aeroacoustics patterns in patients with vocal cord atrophy (VCA) before and after voice therapy. | before and after treatment changes of aerodynamic and aeroacoustic patterns | Baseline, 12 weeks |
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Healthy Subjects Cohort:
Inclusion criteria:
Exclusion criteria:
Vocal Cord Atrophy Cohort:
Inclusion criteria:
Exclusion criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Dennis Frank-Ito, PhD | Duke University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Duke University Medical Center | Durham | North Carolina | 27710 | United States |
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| Acoustic/Auerodynamic testing | Diagnostic Test | Records and displays real-time sound pressure level intensity, intraoral pressure, airflow rate, and fundamental frequency |
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| Laryngovideostroboscopy | Diagnostic Test | Visualization of vocal cords in slow motion. It uses a stroboscopic lamp, which generates regular flashes of light. A flexible tube is inserted in the back of the mouth or through the nose and into the throat. Video pictures are then recorded while patients are making sound. |
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