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Updated: Aug 5, 2026
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Video-Assisted Orotracheal Intubation in Rats Using a Low-Cost Smartphone-Connected Otoscope
Published on: July 14, 2026
Video-Assisted Orotracheal Intubation in Rats Using a Low-Cost Smartphone-Connected Otoscope
Lionel Tchatat Wangueu1, Grégoire Vincent2, Anaïs Dumesnil2
1Inserm U1096, FHU-REMOD-VHF, Normandie Université, UNIROUEN; Department of pharmacology, Rouen University Hospital; lionel.tchatat-wangueu1@univ-rouen.fr.
Journal of Visualized Experiments : Jove
|August 3, 2026
Summary
This study presents a simple, low-cost video-assisted orotracheal intubation method for rats, achieving high success rates and minimizing complications in experimental settings.
Area of Science:
- Veterinary Medicine
- Surgical Techniques
- Animal Research
Background:
- Endotracheal intubation in rats is crucial for controlled ventilation during experimental procedures.
- Rat airway management is challenging due to anatomical constraints and limited technique accessibility.
Purpose of the Study:
- To describe a simple, low-cost, video-assisted direct laryngoscopy method for orotracheal intubation in rats.
- To provide a reliable protocol for experimental airway management in rats.
Main Methods:
- Utilized a commercially available video otoscope with smartphone connectivity for real-time upper airway visualization.
- Employed an inclined intubation platform and continuous visual guidance for intubation in anesthetized rats.
- Confirmed correct endotracheal tube placement using thoracic expansion, oxygen saturation (SpO₂), and capnography.
Main Results:
- Successfully applied the technique in a cohort of 50 rats with a high first-attempt success rate.
- Observed a low incidence of peri-procedural complications.
- Demonstrated rapid intubation facilitated by continuous visual guidance.
Conclusions:
- The described video-assisted intubation method is simple, low-cost, and effective for rats.
- Continuous visualization may reduce risks of esophageal intubation and airway trauma.
- This protocol offers a feasible approach for experimental airway management in rats.
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