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Olfactory dysfunction is a defining symptom of COVID-19 infection. Studies have demonstrated improved olfaction in patients with post infectious olfactory dysfunction after an olfactory training (OT). The aim of this study is to assess the clinical outcomes of olfactory training (12 weeks) therapy in the treatment of persistent olfactory dysfunctions after COVID-19. Specially, we aim to compare the effectiveness of two different olfactory training (different odors).
A group will train themselves with 4 scents (rose, orange, clove and eucalyptus) and another group with 4 different scents (cheese, coffee, strawberries and lemon). Olfaction sensory evaluation will be performed by using different olfaction tests (Sniffin' Sticks and UPSIT) and complete questionnaires to assess olfactory perception and particularly parosmia and phantosmia.
Full description
Patients who meet the criteria, who have agreed to participate in this research project and sign the consent form will be placed in one of the following two groups:
● Experimental group (olfactory training)
Initial meeting: Each participant will be asked for a session of approximately 1:30 h which will take place in a ventilated room in the laboratory of Dr. Johannes Frasnelli at UQTR. During the hour preceding this evaluation, subjects will be asked not to smoke, eat or drink anything other than water and not to wear perfume. A research assistant will be responsible for completing the various tests. During this meeting, the following tests will be done:
Treatment (12 weeks): Following the initial meeting, patients can begin training:
■ Participants will bring their training kit with them following the olfactory evaluation.
Final meeting: After 12 weeks of treatment, an appointment will be scheduled with the participant. The olfactory evaluation will be done as described in the initial meeting. During the hour preceding this evaluation, subjects will be asked not to smoke, eat or drink anything other than water and not to wear perfume. A research assistant will be responsible for administering the various tests. During this meeting, the following tests will be done:
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70 participants in 2 patient groups
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Central trial contact
Frank Cloutier, PhD; Johannes A Frasnelli, PhD
Data sourced from clinicaltrials.gov
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