Toward the Development of a Bronchoscope With a Dedicated O2 Channel ?
NCT ID: NCT01963377
Last Updated: 2013-10-16
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
8 participants
INTERVENTIONAL
2013-01-31
2013-02-28
Brief Summary
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Detailed Description
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This study will compare partial pressure of oxygen measured in capillary blood (PcO2) at various O2 flow from 0 to 2 and 4 l/min administered using nasal cannulae or bronchoscope. During bronchoscopy, oxygen will be administered throughout the aspirating channel of the scope which extremity will be positioned at mid-tracheal level. After local anesthesia of the airways using lignocaine spray 10% and solution 1%, the bronchoscope will be introduced in seated position using a mouthpiece and placed at mid-tracheal level. Arterial O2-pressure sampled at the earlobe will be measured after incremental O2-supplementation from 0 to 2 and then 4 l/min using a nasal cannula or the aspirating channel of the bronchoscope. At each flow rate, capillary O2-pressure will be measured after 2 minutes. Between each condition of O2-supplementation there will be a pause of 5 minutes of room air breathing. The order of O2-supplementation condition will be selected at random. The whole bronchoscopic procedure should then last about 15 minutes. Additional doses of lignocaine 1% will be instilled in the trachea as requested and O2 saturation and heart rhythm will be monitored continuously during the procedure. Since the subjects are probably able to perceive additional flows in the nose and/or trachea and this may affect the pattern of breathing and the results, air at similar flow rate will be added in the nasal cannulae when O2 is administered using the bronchoscope channel and vice versa such that the subject will be blinded to the way O2 is administered.
This study should allow to demonstrate higher values of capillary O2-pressure during bronchoscopic administration of O2 than when using nasal cannulae. As shown by a recent meta-analysis, partial pressure of O2 measured in capillary blood from the arterialized earlobe (PcO2) is lower than the arterial value but this factor is not important in the present study since it will concentrate on differences in PO2 between the two conditions at similar O2 flow rates that are not affected by this limitation.
Conditions
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Keywords
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Study Design
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RANDOMIZED
CROSSOVER
DIAGNOSTIC
SINGLE
Study Groups
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1. Nasal Cannulae / 2. Bronchoscope channel
Supplementation of O2 through will take place first through the aspiration channel of the bronchoscope, in second phase of the study O2-supplementation will be done through nasal cannulae.
O2 through nasal cannulae
supplementation of O2 through nasal cannulae during bronchoscopy
O2-channel
supplementation of O2 through aspiration channel of bronchoscope during bronchoscopy
1. Bronchoscope channel / 2. Nasal Cannulae
Supplementation of O2 through will take place first through nasal cannulae, in second phase of the study O2-supplementation will be done through the aspiration channel of the bronchoscope.
O2 through nasal cannulae
supplementation of O2 through nasal cannulae during bronchoscopy
O2-channel
supplementation of O2 through aspiration channel of bronchoscope during bronchoscopy
Interventions
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O2 through nasal cannulae
supplementation of O2 through nasal cannulae during bronchoscopy
O2-channel
supplementation of O2 through aspiration channel of bronchoscope during bronchoscopy
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
18 Years
ALL
Yes
Sponsors
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Centre Hospitalier Universitaire Saint Pierre
OTHER
Responsible Party
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Vincent Ninane
Head of Department Pulmonology
Principal Investigators
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Vincent Ninane, Prof., MD
Role: PRINCIPAL_INVESTIGATOR
CHU St. Pierre
Locations
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CHU St. Pierre
Brussels, BHG, Belgium
Countries
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Other Identifiers
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AK/12-11-90/4190
Identifier Type: OTHER
Identifier Source: secondary_id
B076201215478
Identifier Type: -
Identifier Source: org_study_id