Survival and complication rates in 300 horses undergoing surgical treatment of colic. Part 3: Long-term complications and survival.
Authors: Mair T S, Smith L J
Journal: Equine veterinary journal
Summary
# Editorial Summary: Long-term Outcomes Following Surgical Colic Treatment Mair and Smith's retrospective analysis of 300 consecutive colic surgeries (1994–2001) provides valuable prognostic data by tracking complications and survival beyond the immediate post-operative period, addressing a significant gap in the equine literature where long-term outcome data had been limited. Of 204 horses discharged and followed up for over 12 months, 84% survived to the follow-up point; however, recurrent colic emerged as a substantial concern, affecting over one-third of cases—particularly those with small intestinal obstruction, bowel resection, or post-operative ileus. Adhesion formation and ventral hernia were identified as secondary complications, with adhesions predominating after strangulation injuries and hernias occurring in 8% of cases, notably where post-operative drainage or infection had occurred. For practitioners advising owners on realistic prognosis following exploratory laparotomy, these findings underscore the importance of targeted risk stratification based on surgical findings and post-operative management, whilst highlighting that wound management protocols and antimicrobial strategies warrant re-evaluation to reduce hernia and infection rates. The authors emphasise the need for further investigation into prophylactic approaches such as intraperitoneal heparin to mitigate adhesion-related complications and improved surgical techniques to minimise contamination and drainage requirements.
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Practical Takeaways
- •Counsel owners that most horses (84%) survive >12 months after colic surgery, but recurrent colic is common (35%), particularly in those with previous small intestinal disease
- •Horses with small intestinal obstruction, resection, or post-operative ileus carry higher risk of recurrent colic and warrant more intensive post-operative monitoring and management
- •Meticulous wound management to prevent drainage and infection is critical, as these complications increase ventral hernia risk (8% incidence)
Key Findings
- •Long-term survival (>12 months) was 84% in 204 horses discharged after colic surgery with follow-up information available
- •Post-operative colic recurred in 35.1% of horses following a single laparotomy, most commonly in those with small intestinal obstruction, bowel resection, or post-operative ileus
- •Abdominal adhesions were most prevalent in horses presenting with severe colic due to small intestinal strangulation
- •Ventral hernia formation occurred in 8% of horses and was associated with post-operative wound drainage or infection