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| ID | Type | Description | Link |
|---|---|---|---|
| P2019/239 CCB: B406201939717 | Other Identifier | local ethics committee |
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The goal of this clinical trial was to compare the action of long-acting ß2-agonists (LABA-olodaterol) and muscarinic antagonists (LAMA-tiotropium) on tissue oxygenation in COPD considering their impact on proximal and peripheral ventilation and, eventually, on lung capillary volume. The hypothesis was that LABA would have a more peripheral effect than LAMA (due to the opposite gradient of their receptors) and better peripheral ventilation would result in a greater oxygenation.
Before and after LABA (visit 1) and LAMA (visit 2) inhalation, COPD participants were asked to perform single-breath washout and forced oscillation tests, double diffusion technique and spirometry, while transcutaneous oxygenation was continuously recorded.
Slopes of He (SHe) and SF6 (SSF6) from single-breath washout test (SBWO) (assessing ventilation heterogeneities at the level of pre- and intra-acinar bronchioles, respectively) (quadruple model, LR6000 Logan-Sinclair, Rochester, UK), respiratory system resistance (R5, R5-R19) and reactance (X5, AX, Fres) from forced oscillation test (FOT) (Resmon Pro, ResTech, Italy), lung capillary volume (Vc) from double diffusion of NO and CO (DLNO/DLCO) (Hyp'Air compact, Medisoft, Dinant, Belgium), and FEV1 from spirometry (Zan®, Oberthulba, Germany) were evaluated before and after LABD administered via a spacer device: during the first visit, before, 30 minutes and 2 hours after inhalation of 4 puffs of 2,5 µg of olodaterol (LABA); during the second visit, before, 40 minutes and 2 hours after the administration of 4 puffs of 2,5 µg of tiotropium (LAMA). Transcutaneous oximetry (Perimed232©, Järfälla, Sweden) was monitored continuously during the 2 hours of each visit.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| LABA (olodaterol) | Experimental | After 4-5 days washout period, during the first visit, participants received a long-acting beta2-agonist (LABA) |
|
| LAMA (tiotropium) | Experimental | Two days after the first visit, during the second visit , participants received a long-acting muscarinic antagonist (LAMA) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| LABA | Drug | Inhalation of 4 puffs of 2,5 µg of a long-acting beta2-agonist (LABA-olodaterol) administered via a spacer device |
|
| Measure | Description | Time Frame |
|---|---|---|
| Tissue oxygenation (TcO2) change from baseline | Transcutaneous oxygen (TcO2) evaluated continuously with a transcutaneous oximeter | 120 minutes post-drug-administration |
| Tissue oxygenation (TcO2) change from baseline | Transcutaneous oxygen (TcO2) evaluated continuously with a transcutaneous oximeter | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Measure | Description | Time Frame |
|---|---|---|
| Slope of Helium (SHe) change from baseline | SHe from single-breath washout test (SBWO) assessing peripheral ventilation heterogeneities | 120 minutes post-drug administration |
| Slope of Helium (SHe) change from baseline |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Silvia Pérez Bogerd, MD | Erasme University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Erasme University Hospital | Brussels | 1070 | Belgium |
When published, the datasets used and/or analysed during the study will be available from the corresponding author on reasonable request.
After the publication of the results
The datasets used and/or analysed during the study will be available from the corresponding author on reasonable request.
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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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| ID | Term |
|---|---|
| C549647 | olodaterol |
| D000069447 | Tiotropium Bromide |
| ID | Term |
|---|---|
| D012602 | Scopolamine Derivatives |
| D014326 | Tropanes |
| D053961 | Azabicyclo Compounds |
| D001372 | Aza Compounds |
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A prospective, clinical, uncontrolled, single-blind, cross-over trial that included 2 visits over 2-3 days. Assessments were performed before and after long-acting bronchodilation (LABD): during the first visit, before, 30 minutes and 2 hours after inhalation of olodaterol (LABA); during the second visit, before, 40 minutes and 2 hours after the administration of 4 puffs of 2,5 µg of tiotropium (LAMA).
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| LAMA | Drug | Inhalation of 4 puffs of 2,5 µg of a long-acting muscarinic antagonist (LAMA-tiotropium) administered via a spacer device |
|
|
SHe from single-breath washout test (SBWO) assessing peripheral ventilation heterogeneities
| 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Area under reactance curve from 5 Hz (AX) change from baseline | AX from forced oscillation test (FOT) evaluating the peripheral lung function | 120 minutes post-drug administration |
| Area under reactance curve from 5 Hz (AX) change from baseline | AX from forced oscillation test (FOT) evaluating the peripheral lung function | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Reactance at 5 Hz (X5) change from baseline | X5 from forced oscillation test (FOT) also evaluating the peripheral lung function | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Resonant frequency (Fres) change from baseline | Fres from forced oscillation test (FOT) also evaluating the peripheral lung function | 120 minutes post-drug administration |
| Resonant frequency (Fres) change from baseline | Fres from forced oscillation test (FOT) also evaluating the peripheral lung function | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Peripheral resistance (R5-R19) change from baseline | Peripheral resistance, assessed as frequency dependence of resistance (R5-R19) from forced oscillation test (FOT) also evaluating the peripheral lung function | 120 minutes post-drug administration |
| Peripheral resistance (R5-R19) change from baseline | Peripheral resistance, assessed as frequency dependence of resistance (R5-R19) from forced oscillation test (FOT) also evaluating the peripheral lung function | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Lung capillary volume (Vc) change from baseline | Vc from single-breath double diffusion technique of nitric oxide (NO) and carbon monoxide (CO) (DLNO/DLCO) | 120 minutes post-drug administration |
| Lung capillary volume (Vc) change from baseline | Vc from single-breath double diffusion technique of nitric oxide (NO) and carbon monoxide (CO) (DLNO/DLCO) | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| Forced Expiratory Volume in 1 Second (FEV1) change from baseline | FEV1 from spirometry | 120 minutes post-drug administration |
| Forced Expiratory Volume in 1 Second (FEV1) change from baseline | FEV1 from spirometry | 30 (LABA)/40 (LAMA) minutes post-drug administration |
| D020969 |
| Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D009930 |
| Organic Chemicals |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
| D019086 | Bridged Bicyclo Compounds, Heterocyclic |
| D006572 | Heterocyclic Compounds, Bridged-Ring |