Olfactory Disorder
Conditions
Keywords
sense of smell, smell test, at-home smell test, essential oil, olfactory loss
Brief summary
The purpose of this study is to determine the impact of a twice daily at-home olfactory training program with a twenty scent, essential oil-based smell test in patients with olfactory dysfunction.
Detailed description
This study randomizes participants to receive either a four scent or fourteen scent olfactory retraining protocol. Baseline olfaction will be tested with a currently commercially available smell test as well as an essential oil based smell test. The protocol involves twice daily retraining where the participant inhales the scent and makes a mental note of what they should be smelling. The training period is six months total with a visit at 3 months to re-assess smell function as well as at six months.
Interventions
OTHERSmell Test
Oils are used for each of the different scents. Each scent will be put on an aromatherapy inhaling stick.
Sponsors
University of Kansas Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Have clinical olfactory dysfunction
Exclusion criteria
* Pregnant women * Unable to perform routine follow-up * Current participation in another clinical trial during this trial * Patients with dementia, Alzheimer's disease, Parkinson's disease, or other neurocognitive disorders * Diagnosis of other systemic conditions known to impact the sinonasal cavity such as Wegener's granulomatosis, Churg Strauss, and immunodeficiency * Patients who are allergic to any of the smells or components of our olfactory testing * Chronic rhinosinusitis, malignant tumors and/or oncologic therapies (radiation/chemotherapy) * History of surgery on the nose or paranasal sinuses * Patients using medications that may impact olfactory function (i.e. corticosteroids)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in ability to detect odorants - Sniffin' Sticks | Change from Baseline to Month 6 | Sniffin Sticks are a battery of 12 scents within a tube. The subject smells each scent and then chooses from 4 multiple choice options which is the scent they smelled. Increased number of correct responses indicates better sense of smell. 12/12 is the maximum score. 0/12 is the minimum score. |
| Change in ability to detect odorants - AROMA | Change from Baseline to Month 6 | AROMA is a essential oil based test. The subject is asked to respond if they detect a smell. If yes, they proceed to a 4 multiple choice items and select the item the smell. If no, they proceed to the next item. Higher number correct indicates better sense of smell. It consists of 13 odorants and 1 blank. Improved sense of smell would also increase the number of correctly identified odorants out of the 14 (including noting the 1 blank). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Questionnaire of Olfactory Disorders-Negative Statements (QOD-NS) | Change from Baseline to Month 6 | The QOD-NS includes 17 statements that are graded on a scale from 0 to 3. Total score ranges from 0 to 51. Higher QOD-NS scores reflect better quality of life. |
| SF-12 (Short Form Health Survey) | Change from Baseline to Month 6 | SF-12 is a validated general measure of quality of life instrument that includes physical and mental scales. There are a total of 12 questions. Each aspect of the scale is weighted differently to yield a composite score. In general, a higher score is associated with better health. |
Countries
United States
Outcome results
None listed