Comparison of carbonated lidocaine and lidocaine hydrochloride for caudal epidural anesthesia in horses.

This research compares the effectiveness of carbonated lidocaine and lidocaine hydrochloride in providing caudal epidural anesthesia for horses. The study concludes that there’s no significant advantage of using carbonated lidocaine over lidocaine hydrochloride.

Overview of the Research

• The researchers conducted a double-blind trial involving eight horses, meaning neither the person administering the anesthesia nor the observer knew which solution was being used. This helps to remove any potential bias in the results.
• The goal of the research was to determine if carbonated lidocaine provided any benefits over lidocaine hydrochloride when used for caudal epidural anesthesia. Caudal epidural anesthesia is a procedure that provides pain relief to the lower part of the body by injecting an anesthetic into the spinal canal.

Execution of the Study

• The study was carried out on eight horses. Of these eight, five horses achieved successful paired bilateral caudal epidural blockades, which means anesthesia was effectively given on both sides of their bodies.
• Both carbonated lidocaine and lidocaine hydrochloride were tested on these five horses and crucial factors such as onset time (how quickly the anesthesia took effect), duration (how long the anesthetic effect lasted), and sensory blockade (the degree of sensation loss) were observed and noted for comparison.

Results and Conclusion

• The results showed no significant differences in the onset time, the duration, or sensory blockade between carbonated lidocaine and lidocaine hydrochloride.
• Based on this evidence, the researchers concluded that carbonated lidocaine does not offer any advantage over lidocaine hydrochloride when used for caudal epidural anesthesia in horses. Hence, there may be no compelling requirement to switch from using lidocaine hydrochloride to carbonated lidocaine in this context.