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Is a four minute wait required between transfer test measurements?

Is a four minute wait required between transfer test measurements?

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN37360213
Enrollment
25
Registered
2007-09-28
Start date
2006-09-01
Completion date
Unknown
Last updated
2021-08-24

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

Conditions

Respiratory: Function tests Respiratory Function tests

Interventions

Prospective review of pulmonary function tests for patients referred to the pulmonary function laboratory. Participants will be randomised into the order of performing the test. This will either be

Sponsors

Record Provided by the NHSTCT Register - 2007 Update - Department of Health
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 25 subjects from each of the following diagnostic groups: a. Healthy volunteers (no lung disease) b. Asthmatics (variable obstructive lung disease) c. COPD (obstructive lung disease) d. Fibrosis (restrictive lung disease) Inclusion criteria: 1. Over 18 years of age 2. Subject must be able to understand and perform lung function test to national guidelines 3. Non or ex-smokers (>6 months) 4. Physician diagnosis of asthma, COPD or lung fibrosis

Exclusion criteria

Exclusion criteria: 1. Haemoptysis of unknown origin 2. Pneumothorax 3. Unstable cardiovascular status (recent MI or PE) 4. Thoracic, abdominal or cerebral aneurysms 5. Recent eye surgery 6. Nausea and vomiting 7. Recent thoracic or abdominal surgical procedures 8. Involved in other studies with licensed drugs or methodology studies within last weeks

Design outcomes

Primary

MeasureTime frame
Whether the timing of subsequent TLco measurements influences the transfer factor measurement.

Secondary

MeasureTime frame
Whether the timing of subsequent TLco measurements influences the alveolar volume measurement.

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026