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NCT00015795 · ClinicalTrials.gov registry record · Phase 1
Study of Air Stream in Voice Production
A Phase 1 study, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- Completed
- Registry status
- Phase 1
- Development phase
- 30
- Enrollment target
NCT00015795: Completed Phase 1 study, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
NCT00015795 is a Phase 1 study that has completed, run by National Institute of Neurological Disorders and Stroke (NINDS). The registered enrollment target is 30 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (50% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00015795, a Phase 1 study, has completed, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 30 participants
- Enrollment target
Study Summary
This study will investigate and compare the air stream during voice production in patients with abductor spasmodic dysphonia and in normal volunteers. People with abductor spasmodic dysphonia have uncontrolled muscle spasms during speech, resulting in a weak voice. A better understanding of the abnormalities of this disorder may help in the development of more effective treatments. Healthy volunteers and patients with abductor spasmodic dysphonia may be eligible for this study. Candidates will have a physical examination and medical history. (Patients will be videotaped and voice-recorded during the medical interview for review by specialists who will identify the type and severity of their speech disorder.) All candidates will also undergo a procedure called flexible fiberoptic laryngoscopy to record the movement of the vocal folds during speech, breathing and other tasks such as singing, whistling and prolonging vowels. For this test, the inside of the nose is sprayed with an anesthetic (lidocaine) to numb the nasal cavity and a decongestant (oxymetazoline) to widen the nasal passage. Then, a thin flexible tube called a nasolaryngoscope is passed through the nose to the larynx (voice box). A camera attached to the eyepiece of the nasolaryngoscope records the movements of the vocal folds. Participants will then have an airway interruption test to detect pressure changes in the voice box during production of continuous sounds. A nose clip is placed over the subject's nose and two sensor devices are placed on the neck to pick up changes in movement and position of the vocal cords during voicing. A mouthpiece is placed in the mouth, and subjects are asked to say "ah" continuously at a specified sound level. This voicing is repeated 33 times with periodic breaks. Patients only will also be given an injection of botulinum toxin. These injections are effective, in varying degrees, in about 60 percent of patients with abductor spasmodic dysphonia. This study will use a
Interventions
- DEVICE airway interruption test
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 30 participants |
| Start Date | 2001-05 |
| Est. Completion | 2003-06 |
| Phase | Phase 1 |
What the finished NCT00015795 record still lists
NCT00015795 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 30 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (50% lower).
The record links to 0 conditions, and to 1 intervention - of which airway interruption test is the first listed.
NCT00015795 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00015795 about?
NCT00015795 is a clinical study titled "Study of Air Stream in Voice Production". This study will investigate and compare the air stream during voice production in patients with abductor spasmodic dysphonia and in normal volunteers. People with abductor spasmodic dysphonia have uncontrolled muscle spasms during speech, resulting in a weak voice. A better understanding of the abno...
What is the current status of trial NCT00015795?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 30 participants. The study started on 2001-05. Estimated completion is 2003-06.
What interventions are being tested in trial NCT00015795?
The interventions under investigation include: airway interruption test (DEVICE).
Who is sponsoring clinical trial NCT00015795?
This trial is sponsored by National Institute of Neurological Disorders and Stroke (NINDS), which has 567 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00015795's enrollment target sits among peer trials
30 1332nd of 2000 higher than 561 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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