Evaluation of laparoscopic adhesiolysis for the treatment of experimentally induced adhesions in pony foals.

The study investigates the effectiveness of a medical procedure called laparoscopic adhesiolysis in treating experimentally created tissue adhesions in pony foals. The research showed that the procedure significantly reduced the number of adhesions compared to a control group.

Methodology

• The researchers carried out the experiments on 8 healthy pony foals. They conducted celiotomy (a surgical procedure to open the abdominal cavity) on the foals and created adhesions at certain points in the intestine;
• Specifically, the adhesions were created at the jejunoileal junction (the point where the jejunum ends and ileum begins in the small intestine) and the areas 0.5 and 1 metre before this junction. This was done through a process known as serosal abrasion, a method to induce adhesions by deliberately irritating the serosal layer of the bowel;
• After 10 days, the researchers performed exploratory laparoscopy (a surgical diagnostic procedure to examine the organs inside the abdomen). They then performed laparoscopic adhesiolysis (a surgical technique to remove the adhesions) only in the treatment group, consisting of 4 randomly selected foals, while the remaining 4 served as a control group;
• Finally, the investigators performed another laparoscopy and subsequently euthanized the foals 30 days after the initial procedure. At this point, they documented the number and nature of the abdominal adhesions.

Results

• After 30 days, the number of adhesions found in the control group was significantly higher than in the treatment group. In the control group, all adhesions identified during the first exploratory laparoscopy were still noticeable during the final laparoscopy and autopsy;
• On the other hand, in the treatment group, no adhesions formed again after they were broken down through laparoscopic adhesiolysis. However, the researchers did find a localized adhesion between the omentum (a large fatty structure that drapes over the intestines) and site of the initial laparoscope portal in 5 out of 8 foals during the final laparoscopy and autopsy.

Conclusion

• The study noted the value of the serosal abrasion model for studying abdominal adhesions in foals.
• Most importantly, the research established that laparoscopic adhesiolysis could effectively treat experimentally induced adhesions in ponies during their early stages of formation;
• The study proposes that future research should look into methods to prevent the formation of new adhesions at the laparoscope portal sites.