Colonic obstructions due to enteroliths in four horses.

This research article reports on four cases of horses, aged six to 14 years old, that experienced colonic obstructions due to enteroliths with symptoms of chronic low-grade abdominal pain, anorexia and lack of defecation, but normal heart rate, respiratory rates, rectal temperatures and blood counts.

Summary of the Research

• This study reports on cases of enterolith obstructions in horses. Enteroliths are concretions or “stones” which form in the intestines of horses. They can cause colonic obstructions which present as chronic abdominal pain, anorexia, and constipation in the horses.
• The horses aged between six to 14 years old included in this study exhibited these symptoms. However, the horses’ physical condition, including heart and respiratory rates, rectal temperatures and complete blood counts, all fell within normal ranges despite the presence of these obstructions.

Key Findings

• All four cases demonstrated the presence of enteroliths in the transverse colon. This is a part of the colon where material from the small intestine first enters, and it would be the site most likely to form enteroliths due to stagnation of material.
• The obstruction of the intestinal tract by these enteroliths led to reduced gut motility and accumulation of gas. Lack of defecation was a key symptom in all the cases presented.
• The abnormally large enteroliths were successfully removed from the horses’ colons in all four cases.

Implications and Conclusion

• Based on these case studies, it is clear that enteroliths can cause significant discomfort and potentially dangerous obstructions in horses. Even so, the horses’ vital signs and blood profiles may still appear normal, making diagnosis potentially challenging.
• This research illustrates the importance of being aware of enteroliths as a potential cause for abdominal pain, anorexia, and constipation in horses. It highlights the need for careful diagnostic examinations, especially when other indicators such as vital statistics and blood counts are normal.