Factors affecting long-term survival of horses recovering from surgery of the small intestine.
Authors: Proudman C J, Edwards G B, Barnes J, French N R
Journal: Equine veterinary journal
Summary
# Editorial Summary: Long-term Survival Following Equine Small Intestinal Surgery Using data from 382 horses that underwent colic surgery, Proudman and colleagues developed a predictive model for post-operative survival that identifies preoperative total plasma protein (TP) as the single most protective factor—higher TP values significantly reduced mortality risk, whilst elevated packed cell volume (PCV) paradoxically increased it. Epiploic foramen entrapment cases, traditionally regarded as having particularly poor prognoses, demonstrated a 1.7-fold higher death rate than other small intestinal conditions in initial analysis, though multivariable modelling revealed this excess risk was substantially explained by lower preoperative TP concentrations and prolonged surgical duration rather than the condition itself. Beyond these biochemical markers, the requirement for relaparotomy emerged as an additional survival predictor, alongside surgery duration as a measurable procedural risk factor. The findings reframe TP as more than a simple hydration indicator—suggesting it reflects meaningful physiological reserve or tissue integrity that influences survival independent of fluid status alone. For practitioners, these results provide objective preoperative parameters to counsel owners on realistic prognosis and may warrant targeted nutritional or medical optimisation of TP before elective small intestinal surgery, particularly in cases where delay is feasible.
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Practical Takeaways
- •Check preoperative TP and PCV values as key prognostic indicators when counselling owners on post-operative survival expectations for small intestinal colic surgery
- •EFE cases with lower TP levels should be flagged as higher risk; aggressive preoperative fluid and protein support may improve outcomes
- •Surgical efficiency matters—longer operative times correlate with poorer survival, emphasizing the value of rapid case assessment and surgical planning
Key Findings
- •Lower preoperative total plasma protein (TP) was significantly associated with increased risk of post-operative death in small intestinal surgery cases
- •Epiploic foramen entrapment cases had 1.7 times higher death rate than other small intestinal diseases, partly explained by lower TP and longer surgery duration
- •Preoperative packed cell volume (PCV), duration of surgery, and need for relaparotomy were independent variables associated with post-operative survival
- •Total plasma protein may function as a prognostic determinant beyond simple hydration status in small intestinal colic cases