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This study will compare the effects of vocal rest versus continuous vocalization for one hour immediately following botulinum toxin injections for adductor spasmodic dysphonia.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Vocal activity | Experimental | The vocal activity arm will require the participant to remain in the clinic and read aloud continuously for a period of one hour after a botulinum toxin injection |
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| Vocal rest | Experimental | The vocal rest arm will require the participant to remain in the clinic and remain on complete vocal rest for a period of one hour after a botulinum toxin injection |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Vocal rest versus vocalization | Behavioral | A comparison of one hour of vocal rest versus continuous vocalization after botulinum toxin injection |
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| Measure | Description | Time Frame |
|---|---|---|
| Severity of spasmodic dysphonia symptoms | Acoustic measures and perceptual ratings of vocal spasm severity | Six weeks post-treatment |
| Patient-reported outcome measures of symptoms and communication | Six patient-reported questionnaires related to symptoms, communication effectiveness, quality of life, and self-efficacy | six weeks post-treatment |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| LawsonHRI | London | Ontario | N6G 1H1 | Canada |
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The proposed study is a randomized, cross-over, clinical trial involving the comparison of two treatments (A and B) separated by a wash-out period (W). The patient participants will be randomized to one of the following two treatment orders: AWB or BWA.
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