Measures of Respiratory Health Registry

The scope of the registry is to collect data on small airways function in healthy children, children with cystic fibrosis (CF) and children with non-CF respiratory disease using the multiple breath washout (MBW) system. These data will be stored along with demographic data, clinical data, and traditional pulmonary function testing (PFT) data. The MBW data will be collected with concurrent with clinically indicated PFT testing.

The purpose of the registry is to 1/ establish a locally collected normal range of small airways function across the paediatric age range and 2/ to collect these measurements in CF and non-CF respiratory disease.

Ultimately, the objective of this registry is to validate MBW technology as a tool that can be utilized in clinical care.

Participants with CF

Inclusion criteria

-Diagnosis of CF as evidenced by one or more clinical feature consistent with the CF phenotype or positive CF newborn screen AND one or more of the following criteria: i. A documented sweat chloride ≥ 60 mEq/L by quantitative pilocarpine iontophoresis (QPIT).

ii. A documented genotype with two disease-causing mutations in the CFTR gene.

• In the opinion of the investigator, the participant will likely have the ability to perform the lung function test of interest on the day of testing

Exclusion criteria

• Physical findings at the screening that would compromise the safety of the participant or the quality of the data (e.g. respiratory distress or work of breathing)
• Requirement of supplementary oxygen to maintain oxygen saturation above 95%

Participants with other Respiratory Disease

Inclusion criteria

• Physician-diagnosed lung disease
• Informed consent by participant, parent, or legal guardian
• In the opinion of the investigator, the participant will likely have the ability to perform the lung function test of interest on the day of testing

Exclusion criteria

• Physical findings at screening that would compromise the safety of the participant or the quality of the research data
• Requirement of supplementary oxygen to maintain oxygen saturation above 95%

Healthy Participants

• Inclusion criteria
• Informed consent by participant, parent, or legal guardian
• In the opinion of the investigator, the participant will likely have the ability to perform the lung function test of interest on the day of testing

Exclusion criteria

• Physical findings at screening that would compromise the safety of the participant or the quality of the research data
• Evidence of lung disease