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To investigate whether high frequency airflow oscillation (HFAO), delivered using Aerosure, increases six minute walk distance (6MWD) and reduces exertional breathlessness in patients with severe chronic obstructive pulmonary disease (COPD).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Aerosure 25 Hz | Experimental | All subjects receive an active device, sham device (disabled) and no device in a randomised sequence. |
|
| Aerosure sham | Sham Comparator | All subjects receive an active device, sham device (disabled) and no device in a randomised sequence. |
|
| No device | No Intervention | All subjects receive an active device, sham device (disabled) and no device in a randomised sequence. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Aerosure 25 Hz | Device | Active Aerosure device |
| |
| Aerosure Sham |
| Measure | Description | Time Frame |
|---|---|---|
| Six minute walk distance (6MWD) | up to 6 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| end-6MWD Borg breathlessness | after 6 minute walk test | |
| Arterial oxygen saturation (SpO2) | At start of 6 minute walk test and after every 1 minute |
| Measure | Description | Time Frame |
|---|---|---|
| Inspiratory capacity (IC) | At end of 6 minute walk test |
Inclusion Criteria:
Exclusion Criteria:
Contraindications to spirometry [1]
Contraindications to clinical exercise testing [2]
Contraindications to HFAO (see section A.6.3b))
Resting SpO2>88% on air or on patient's usual oxygen prescription
Systolic arterial blood pressure (ABP) >200mmHg, diastolic ABP >100 mmHg
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| Name | Affiliation | Role |
|---|---|---|
| John Moxham, MD | King's College Hospital NHS Trust | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| King's College Hospital, Bessemer Road, Denmark Hill | London | SE5 9RS | United Kingdom |
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| ID | Term |
|---|---|
| D029424 | Pulmonary Disease, Chronic Obstructive |
| ID | Term |
|---|---|
| D008173 | Lung Diseases, Obstructive |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
| D002908 | Chronic Disease |
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| Device |
Device designed to appear identical to active device but with HFAO mechanism disabled |
|
| D020969 |
| Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |