Oxygen Insufflation Via Flexible Scope
- Conditions
- Insertion of a Flexible BronchoscopeAirway Management When Secretions Obstruct the Larynx
- Registration Number
- NCT06680648
- Lead Sponsor
- Rigshospitalet, Denmark
- Brief Summary
The investigators will study to what extent insufflation of oxygen via the suction channel of a flexible bronchoscope can help with making access from the mouth to the trachea easier when there is blood or secretions in the way. We provide the oxygen-flow from the circle-system of an anaesthesia-machine and in this way we can limit the pressure to 30 and 40 cm H2O which are relatively safe pressure-levels. The endoscopy is performed on a plastic manikin and artificial sputum mixed with artificial blood is used. The procedure will be performed by 64 anaesthetists that will be randomised to use either oxygen-insufflation or not. The setup is cross-randomised so that each participant will perform two attempts, one with insufflation and one without. The procedures will be video-taped and evaluated by a blinded observer regarding a) success/failure of advancing the scope to the mid trachea under vision, b) the duration of the procedure. Additionally, subjective scores regarding the benefit of using insufflation will be obtained
- Detailed Description
The investigators will study to what extent insufflation of oxygen via the suction channel of a flexible bronchoscope can help with making access from the mouth to the trachea easier when there is blood or secretions in the way. We provide the oxygen-flow from the circle-system of an anaesthesia-machine and in this way we can limit the pressure to 30 and 40 cm H2O which are relatively safe pressure-levels. The endoscopy is performed on a plastic manikin and artificial sputum mixed with artificial blood is used. The procedure will be performed by 64 anaesthetists that will be randomised to use either oxygen-insufflation or not. The setup is cross-randomised so that each participant will perform two attempts, one with insufflation and one without. The procedures will be video-taped and evaluated by a blinded observer regarding a) success/failure of advancing the scope to the mid trachea under vision, b) the duration of the procedure. Additionally, subjective scores regarding the benefit of using insufflation will be obtained
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 64
Anesthesiologists attending the airway course "Airwaymanagement for Anaesthesiologists"
- non acceptance of participation
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Primary Outcome Measures
Name Time Method The fraction of bronchoscopic advancements that result in a view of vocal cords (Fully or partial) without the view being obstructed by saliva or blood during the advancement 90 seconds The fraction in whom The flexible scope is advanced to the trachea with maintained visibility all the time until vocal cord is seen
- Secondary Outcome Measures
Name Time Method The scope is advanced to the trachea within 2 minutes 2 minutes The flexible scope is advanced to the trachea with or without maintained visibility
Duration until the tip of the scope is in the trachea 0-2 minutes Time from the tip of the scope passes the teeth until it is in the trachea
Operation percieved ease of advancing the scope to the trachea with maintained visibility 2 minutes Operation percieved ease of advancing the scope to the trachea with maintained visibility, on a visual analogue scale from 1-10, 1 = very easy, 10 = almost impossible, lowest is best
Operation percieved ease of advancing the scope to the trachea, overall 2 minute Operation percieved ease of advancing the scope to the trachea overall,
, on a visual analogue scale from 1-10, 1 = very easy, 10 = almost impossible, lower score is best.The scope is advanced to the trachea within 1 minute 1 minute The flexible scope is advanced to the trachea with or without maintained visibility
unobstructed advancement to the trachea in two minutes 2 minute The flexible scope is advanced to the trachea with maintained visibility
unobstructed advancement to the trachea in 90 seconds 90 seconds The flexible scope is advanced to the trachea with maintained visibility
Obtaining a view of vocal cord(s) without obstruction of the view, obtained in 30 seconds 30 sekunds The fraction of participants in each group who obtain a view of vocal cord(s) without the view being obstructed at any point
Obtaining a view of vocal cord(s) without obstruction of the view, obtained in one minute 1 minute The fraction of participants in each group who obtain a view of the vocal cord(s) without the view being obstructed at any point
Obtaining a view of the vocal cord(s) without obstruction of the view, obtained in 90 seconds 90 seconds The fraction of particip in each group who obtain a view of the vocal cord(s) without the view being obstructed, Obtained in 90 seconds
The fraction of brochoscopic advancements that results in Unobstructed advancement to the trachea in one minute 1 minute The fraction of the attempts when the flexible scope is advanced to the trachea with maintained visibility
Trial Locations
- Locations (1)
Rigshospitalet, Unoversity Hospital of Copenhagen
🇩🇰Copenhagen, The Capital Region, Denmark