Comparing Breathing Tests for Diagnosing Asthma in Adults
Compares asthma diagnostic breathing tests, including impulse oscillometry, in adults with suspected asthma.
Plain-language title generated from the registry record
Registry title: A Comparison of Diagnostic Testing Modalities in the Assessment of Asthma
Key facts
- Where
- Portsmouth, United KingdomSee the site
Where in United Kingdom
- Portsmouth Hospitals University NHS TrustPortsmouth, United KingdomTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Portsmouth Hospitals NHS Trust
- Trial code
- NCT06286085
- Record updated
- 17 September 2026
- Original description
This study aims to assess the concordance of international asthma guidelines in the diagnosis of asthma and explore the presence of airways disease using additional non-guideline physiologic criteria, such as IOS (impulse osciollometry), not included in the guidelines, but available in the Portsmouth lung function service.Read full original descriptionShow less
A Comparison of Diagnostic Testing Modalities in the Assessment of Asthma
This study aims to assess the concordance of international asthma guidelines in the diagnosis of asthma and explore the presence of airways disease using additional non-guideline physiologic criteria, such as IOS (impulse osciollometry), not included in the guidelines, but available in the Portsmouth lung function service.
Inclusion: The patient will meet all the following criteria to be considered eligible for the study:; Aged 18 years or over; All patients who have attended full asthma workups from November 2021 till date; Willing and able to consent to use their data in this study (opt-out form or e-consent); Patients referred to the Portsmouth asthma service for diagnosis and further management of presumed asthma. Comorbidities are common in asthma, thus patients with co-existing conditions such as obesity, bronchiectasis or COPD will be included.
Exclusion: The participant may not enter the study if either of the following apply:; Unable to comprehend the study and provide informed consent, e.g., insufficient command of English in the absence of someone who can adequately interpret; Patients with other primary respiratory conditions, such as ILD.