Relationship Between Acoustic Breath Sounds and Spirometry

A Comparative Single Centre Study Assessing the Relationship Between Acoustic Breath Sounds as Measured by a Commercially Available Sound Recording Device Against Standard of Care (Spirometry) in the Assessment of Airflow Obstruction in Patients Who Plan to Undergo Spirometry Testing

The goal of this clinical trial is to assess whether wheeze as assessed by a commercially available wheeze monitor is comparable to lung function as measured during a spirometry test. The main questions it aims to answer are whether measures of airflow obstruction (FEV1, FEV1/FVC, PEF) correlate with wheeze score (Tw/Ttot%).

Participants consenting to take part will undergo wheeze measurement prior to and during a spirometry test and will be asked to complete a series of symptom questionnaires.

Inclusion Criteria:

• Consenting adult (aged 18-95) University Hospitals Birmingham patient's attending the Lung Function and Sleep Department (LF&S) routinely as part of their standard clinical management pathway for Lung Function testing that includes Spirometry assessments.
• All patients irrespective of condition will be approached to participate.

Exclusion Criteria:

• Subjects who are contraindicated to perform spirometry on the day of testing
• Subjects who cannot speak or read English
• Patients accessing non-adult services
• Subjects who are unable or do not wish to consent
• Patients with known or suspected restrictive lung disease