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A simplified method for endotracheal intubation in the rat
1Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.
Journal of Applied Physiology (Bethesda, Md. : 1985)
|April 1, 1994
Summary
We developed an easy endotracheal intubation method for rats using readily available materials. This technique demonstrated a high survival rate in survival experiments, improving airway management in small animal research.
Area of Science:
- Veterinary Medicine
- Surgical Techniques
- Laboratory Animal Science
Background:
- Endotracheal intubation in small animals is crucial for survival experiments but current methods have high failure rates.
- Existing techniques like tracheostomy and blind intubation are often unsatisfactory for laboratory rats.
Purpose of the Study:
- To develop and evaluate an easy, reliable method for endotracheal intubation in rats.
- To assess the efficacy and safety of the new intubation technique in survival experiments.
Main Methods:
- A novel direct-vision endotracheal intubation technique using an otoscope, guide wire, and intravenous catheter was developed for rats.
- The method was tested in two groups of rats: 70 undergoing thoracotomy and mechanical ventilation, and 5 for arterial blood gas analysis.
Main Results:
- The new intubation method achieved a 94.3% survival rate in rats undergoing surgery and mechanical ventilation.
- Arterial blood gas analysis showed successful oxygenation and ventilation, with PO2 levels significantly increasing post-intubation and PCO2 decreasing.
Conclusions:
- This simple, direct-vision endotracheal intubation technique is effective and safe for rats.
- The method offers a reliable alternative for airway management in small animal research, reducing complications and improving survival rates.