Physiology and Structure of the Small Airways in Patients With Chronic Airflow Obstruction or COVID-19 (PASSPORT)
Studieöversikt
Status
Status
Betingelser
Betingelser
Studietyp
Studietyp
Inskrivning (Förväntat)
Inskrivning
Kontakter och platser
Studiekontakt
Studiekontakt
- Namn: Christopher M Orton, MBBS
- Telefonnummer: 8029 02073518029
- E-post: c.orton@rbht.nhs.uk
Studieorter
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London, Storbritannien
- Rekrytering
- The Royal Brompton
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Kontakt:
- Christopher M Orton, MBBS
- Telefonnummer: 8029 02073518029
- E-post: c.orton@rbht.nhs.uk
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-
Deltagandekriterier
Urvalskriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Age 16 or over
- Scheduled for bronchoscopy as part of clinical care or research protocol
- No bleeding diathesis or therapeutic anticoagulation
COPD:
- FEV1/FVC ratio <70% or
Asthma:
- Diagnosed by standard clinical methods
- Post-bronchodilator FEV1 ≥60% predicted or COVID-19 infection or previous COVID-19 infection (confirmed as per local guidelines)
Exclusion Criteria:
- Unable to provide informed consent
- Exacerbation of obstructive airways disease or respiratory infection requiring systemic antibiotics or corticosteroids in the 6 weeks prior to enrolment unless suffering from COVID-19 infection and bronchoscopy is required for clinical reasons
Contra-indications to performing lung function testing
- Aortic aneurysm >6cm
- Unstable cardiovascular disease (unstable angina, myocardial infarction or pulmonary embolism <4 weeks prior)
- Severe aortic stenosis
- Pneumothorax
- Cerebral aneurysm
- Thoracic or abdominal surgery <4 weeks prior
Contra-indications to passing oesophageal balloons
- Oesophageal ulceration or varices
- Sinusitis, recent nasal surgery or epistaxis
Studieplan
Hur är studien utformad?
Designdetaljer
Antal grupper/kohorter
Kohorter och interventioner
Grupp / KohortGrupp / Kohort |
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Chronic Airflow obstruction / COVID-19
Patients with either chronic airflow obstruction of COVID-19
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Vad mäter studien?
Primära resultatmått
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Respiratory resistance at 5Hz - 20Hz (R5-R20) (kPa/l/s) related to airtrapping as determined by quantitative CT (Expiratory phase low attenuation area <856 HU (%LAA <856 HU)
Tidsram: Baseline, pre-procedure
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Impulse Oscillometry
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Baseline, pre-procedure
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Sekundära resultatmått
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Respiratory reactance at 5Hz: X5 (kPa/l/s)
Tidsram: Baseline, pre-procedure
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Impulse Oscillometry
|
Baseline, pre-procedure
|
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Reactance area: Ax (kPa/l/s)
Tidsram: Baseline, pre-procedure
|
Impulse Oscillometry
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Baseline, pre-procedure
|
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Functional residual capacity by MBNW: FRCgas (L)
Tidsram: Baseline, pre-procedure
|
Multiple Breath Nitrogen Washout
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Baseline, pre-procedure
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Lung clearance index: LCI
Tidsram: Baseline, pre-procedure
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Multiple Breath Nitrogen Washout
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Baseline, pre-procedure
|
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Ventilation heterogeneity conducting airways: Scond (L/s)
Tidsram: Baseline, pre-procedure
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Multiple Breath Nitrogen Washout
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Baseline, pre-procedure
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Ventilation heterogeneity acinar airways: Sacin (L/s)
Tidsram: Baseline, pre-procedure
|
Multiple Breath Nitrogen Washout
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Baseline, pre-procedure
|
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Forced expiratory volume in 1 second: FEV1 (L)
Tidsram: Baseline, pre-procedure
|
Spirometry
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Baseline, pre-procedure
|
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Forced vital capacity: FVC (L)
Tidsram: Baseline, pre-procedure
|
Spirometry
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Baseline, pre-procedure
|
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Total lung capacity: TLC (L)
Tidsram: Baseline, pre-procedure
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Plethysmography
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Baseline, pre-procedure
|
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Residual volume: RV (L)
Tidsram: Baseline, pre-procedure
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Plethysmography
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Baseline, pre-procedure
|
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Functional residual capacity by plethysmography: FRCpleth (L)
Tidsram: Baseline, pre-procedure
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plethysmography
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Baseline, pre-procedure
|
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Airway mean luminal diameter (Dmean)
Tidsram: Baseline, during the procedure
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Optical Coherence Tomography
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Baseline, during the procedure
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Airway inner lumen area (Ai)
Tidsram: Baseline, during the procedure
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Optical Coherence Tomography
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Baseline, during the procedure
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Airway wall area (Aw), airway wall percentage (Aw%) as determined by [Aw/(Ai + Aw) × 100%]
Tidsram: Baseline, during the procedure
|
Optical Coherence Tomography
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Baseline, during the procedure
|
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Air trapping - expiratory phase low attenuation area <856 HU (%LAA <856 HU)
Tidsram: Baseline, pre-procedure
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Quantitative CT
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Baseline, pre-procedure
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Modified MRC dyspnoea score
Tidsram: Baseline, pre-procedure
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Patient reported outcome measure
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Baseline, pre-procedure
|
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St George's Respiratory Questionnaire Score
Tidsram: Baseline, pre-procedure
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Patient reported outcome measure
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Baseline, pre-procedure
|
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Asthma-related Quality of Life Questionnaire (AQLQ) (if asthmatic)
Tidsram: Baseline, pre-procedure
|
Patient reported outcome measure
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Baseline, pre-procedure
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Asthma Control Questionnaire (ACQ) (if asthmatic)
Tidsram: Baseline, pre-procedure
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Patient reported outcome measure
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Baseline, pre-procedure
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6-minute walk distance (m)
Tidsram: Baseline, pre-procedure
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6-minute walk distance (m)
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Baseline, pre-procedure
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Andra resultatmått
Andra resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Exploratory: Inflammatory and pathological studies of airways brush, wash and cryobiopsy samples
Tidsram: Baseline, during the procedure
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Laboratory based scientific studies
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Baseline, during the procedure
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Samarbetspartners och utredare
Sponsor
Sponsor
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Studiestart
Primärt slutförande (Förväntat)
Primärt slutförande
Avslutad studie (Förväntat)
Avslutad studie
Studieregistreringsdatum
Först inskickad
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Första postat
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste uppdatering publicerad
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
Andra studie-ID-nummer
- 18IC4688
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