Continuous caudal epidural anesthesia in the horse.

The research explores a method for continuous caudal epidural anesthesia in horses which was tested in experiments involving eight healthy adult horses and found to be successfully executed and effective.

Methodology

• The study was carried out with eight healthy adult horses used as subjects. The variety of subjects allowed the researchers to observe the effect of the anesthesia technique on different individuals.
• The method for inducing continuous caudal epidural anesthesia involves using the first intercaudal (intercoccygeal) space as the injection site.
• A directional needle with a stylet was preplaced into the epidural space, serving as a guide for the placement of the epidural catheter. The needle was then carefully removed, ensuring the catheter remained in place within the epidural space.

Anesthetic Procedure

• The anesthetic agent used in this technique was a 2% solution of lidocaine hydrochloride. Lidocaine hydrochloride is commonly used as a local anesthetic due to its rapid onset and extensive anesthesia coverage.
• The initial dose prescribed was 8 ml for an adult animal, with weights ranging from 474 kg to 560 kg.
• When sensation started to return, additional 4 ml doses were promptly administered to maintain the anesthetic effect.

Results and Conclusion

• The research concluded that the technique for continuous caudal epidural anesthesia developed was effective in the horse subjects. It proved to be easily performed, making it practical for use in larger animal veterinary settings.
• Furthermore, the method was not only successful in inducing anesthesia but also in maintaining it for extended periods.