Airway management under spontaneous breathing with the i-scoop videolaryngoscope: Single intervention during anesthesia induction: 1. Preoxygenation via FFP2 mask, 18 L/min O₂ until intubation. 2. Analgosedation: remifentanil 0.3 µg/kg + propofol 0.6 mg/kg bolus, then continuous infusion; max. one additional remifentanil bolus (0.3 µg/kg); midazolam 1 mg if needed. 3. Topical anesthesia: 150-200 mg lidocaine 1% oropharyngeally, then 20 mg lidocaine 1% endotracheally via i-scoop channel. 4. Intubation 60-90 s later under continuous visual control via dual-optic sub-epiglottic i-scoop positioning. 5. Tube confirmation by capnography (PUMA criteria). Training: ≥30 intubations and ≥30 lidocaine applications per operator on airway trainer before study start. Monitoring: SpO₂, ECG, NIBP, capnography, EEG. Escalation and rescue strategies available at all times.
Airway management under spontaneous breathing with the C-Mac D-Blade videolaryngoscope: Single intervention during anesthesia induction, identical to Intervention 1 except for the videolaryngoscope used: 1. Preoxygenation via FFP2 mask, 18 L/min O₂ until intubation. 2. Analgosedation: remifentanil 0.3 µg/kg + propofol 0.6 mg/kg bolus, then continuous infusion; max. one additional remifentanil bolus (0.3 µg/kg); midazolam 1 mg if needed. 3. Topical anesthesia: 150-200 mg lidocaine 1% oropharyngeally, then 20 mg lidocaine 1% endotracheally via separate applicator (C-Mac D-Blade has no integrated channel). 4. Intubation 60-90 s later using C-Mac D-Blade standard technique with pre-shaped tube or stylet. (5) Tube confirmation by capnography (PUMA criteria). Training, monitoring, escalation, and rescue strategies identical to Intervention 1.
The purpose of this clinical trial is to investigate whether the videolaryngoscope i-scoop makes airway management under spontaneous breathing and analgosedation more clinically practicable than the established standard device, the C-Mac D-Blade videolaryngoscope, in adults undergoing surgery under general anesthesia.
The main questions it aims to answer are:
• Is good clinical practicability - defined as a successful, easy, and complication-free intubation under spontaneous breathing - more frequently achieved with the i-scoop than with the C-Mac D-Blade?
Researchers will compare the standardized airway management procedure under spontaneous breathing using either the i-scoop or the C-Mac D-Blade.
Participants will:
* continue breathing on their own during the procedure
* be randomly assigned (1:1) to one of the two videolaryngoscopes
* receive standardized analgosedation and topical lidocaine anesthesia of the upper airway before the breathing tube is placed
* be asked about discomfort and recall of the procedure after surgery (in the recovery room, on postoperative day 1, and at 7 days post-intubation) by a blinded interviewer
| Facility | City | Region | Status |
|---|---|---|---|
| Hannover Medical School | Hanover | Lower Saxony | Recruiting |
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
View NCT07624162 on ClinicalTrials.gov ↗ ← All trials in Germany