Results of surgical treatment of colic in miniature breed horses: 11 cases.

This study analyzed the results of surgical treatment of severe abdominal conditions in miniature breed horses. It highlighted the conditions, surgical findings, complications, and survival rates after surgery, suggesting that while simple obstructions often had a good prognosis, issues involving vascular compromise of the gastrointestinal tissues had a lower survival rate.

Methods of Study

• The retrospective study looked at cases of miniature horses that presented acute abdominal crises, which is a fast onset of severe symptoms related to digestive issues. These horses underwent ventral midline laparotomy, a type of surgery that involves making an incision along the middle of the abdomen to access and resolve the abdominal issue.
• This research examined hospital records from the University Veterinary Centre, Camden from the period between 1997 and 2001.
• Information including the general information about the horse (signalment), history, clinical symptoms, results of diagnostic procedures, location and type of intestinal lesion, treatment, and outcome were gathered from each case record. To determine long-term survival, researchers interviewed the owners through phone.

Findings of Surgical treatment

• The study included 11 miniature horses of various ages and genders. The medical problems found during surgery included faecalith obstruction (hardened feces blocking the intestines), enterolith (mineral stone in the intestines), strangulating lipoma of the descending colon (a fatty tumor causing the intestines to twist), jejunal infarction (tissue death in a part of the small intestine), and caecal infarction (tissue death in a part of the large intestine).
• The long-term survival rate post-surgery was 55%. The survival rate for horses with simple intraluminal obstructions was higher (6 out of 8 horses survived), whereas the horses with the severe gastrointestinal lesions related to vascular compromise had a lower survival rate with all three euthanised due to complications.

Postoperative Complications

• Postoperative complications included impaction of the descending colon, diarrhea, peritonitis (inflammation of the abdominal lining), hyperlipaemia (high levels of fat in the blood), incisional infection and abdominal adhesions (bands of scar tissue between abdominal tissues and organs).
• Hyperlipidaemia was observed in five of the seven horses that had their serum triglycerides checked at presentation.

Conclusions

• The study concluded that simple obstructions were most frequently encountered during surgery in miniature horses and these had a good prognosis after surgical treatment. Conversely, abdominal pain associated with vascular compromise of gastrointestinal tissues indicated a poorer prognosis.
• This study also suggested that factors contributing to faecalith formation (like poor quality roughage, dental disease, and inadequate water intake) should be recognized and avoided in miniature horses. Additionally, it was recommended to check serum triglyceride levels for such horses presenting acute abdominal pain, and provide nutritional supplementation if they indicate elevated levels.