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Legionnaires' Effect on Smell

Legionella Pneumonia's Effect on Olfactory Function

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT03321786
Enrollment
10
Registered
2017-10-26
Start date
2017-09-06
Completion date
2024-06-15
Last updated
2024-07-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Legionnaires' Disease

Brief summary

The goal of this study is to determine whether survivors of Legionnaires' disease suffer smell loss. A quantitative olfactory test will be performed by the participants. Such testing will require approximately 20-30 minutes of the participant's time. The participants will take the University of Pennsylvania Smell Identification Test (UPSIT), a scratch-and-sniff test to assess their ability to identify odors in a forced- choice format. Volunteers will also complete a questionnaire asking personal history, demographic questions, and medical history.

Interventions

OTHERThe University of Pennsylvania Smell Identification Test (UPSIT)

This standardized test, the most widely used olfactory test in the world, is derived from basic psychological test measurement theory and focuses on the comparative ability of subjects to identify odorants at the suprathreshold level. The UPSIT consists of four envelope-sized booklets, each containing ten scratch and sniff odorants embedded in 10- 50-µm polymer microcapsules positioned on brown strips at the bottom of the pages of the booklets.

Sponsors

University of Pennsylvania
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum

Inclusion criteria

* Persons of generally good health, as obtained from a screening questionnaire who are 18 years of age and older * Both men and women of all ethnic backgrounds will be accepted.

Exclusion criteria

* Age less than 18 * Pregnant Women * Persons who mental competence is limited, such as those with dementia

Design outcomes

Primary

MeasureTime frameDescription
Score on the University of Pennsylvania Smell Identification Test20-30 MinutesThe number of correct odor identification responses out of 40 from the standardized University of Pennsylvania Smell Identification Test. The total number of correct responses will then be compared to standard norms of correct responses based on demographic information such as age and sex. Comparing the scores to the standard norms collected will indicate whether a volunteer is normosmic, hyposmic, or anosmic.

Secondary

MeasureTime frameDescription
Questionnaire Responses20-30 MinutesThese are various demographic and medical history questions regarding exposure to Legionella Pneumonia and current experiences post diagnosis and treatment.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026