Endotracheal Intubation in Mice via Direct Laryngoscopy Using an Otoscope

作者： Joanna L. Thomas1,2, Justin Dumouchel2, Jinghong Li2, Jenna Magat2, Dana Balitzer3, Timothy D. Bigby1,2 1Medical and Research Services,VA San Diego Healthcare System, 2Department of Medicine,University of California, San Diego, 3School of Medicine,University of California, San Diego

简介：

Overview

This article presents a reliable and cost-effective method for endotracheal intubation in mice using direct laryngoscopy with an otoscope. The technique is atraumatic and suitable for repeated measurements in chronic experiments, demonstrating superiority over tracheostomy and previous nonsurgical methods.

Key Study Components

Area of Science

• Neuroscience
• Animal Models
• Respiratory Physiology

Background

• Endotracheal intubation is crucial for respiratory support in animal studies.
• Traditional methods may be invasive or technically challenging.
• A reliable technique is needed for chronic experiments.
• This study introduces a new method using an otoscope.

Purpose of Study

• To develop a simple method for intubating mice.
• To ensure the technique is atraumatic and repeatable.
• To compare the new method with existing techniques.

Methods Used

• Positioning the anesthetized mouse correctly.
• Visualizing the vocal cords using an otoscope speculum.
• Passing the endotracheal tube into the throat with a stylet.
• Verifying tube placement using a ventilator.

Main Results

• The new intubation method is effective and reliable.
• It allows for accurate pressure-volume measurements in the lung.
• The technique is less invasive than tracheostomy.
• It can be used for delivering test substances to the lung.

Conclusions

• The developed method is advantageous for chronic studies.
• It provides a reliable alternative to previous techniques.
• Future studies can utilize this method for various respiratory experiments.

Frequently Asked Questions