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Updated: Jul 19, 2026

Surgical Closure of Equine Abdomen, Prevention, and Management of Incisional Complications
Published on: May 10, 2024
Post anaesthetic colic in horses: a preventable complication?
J M Senior1, G L Pinchbeck, R Allister
1Institutes of Evolution, Immunology and Infection Research, University of Edinburgh, UK.
Post-anaesthetic colic (PAC) affects 5.2% of horses after non-abdominal surgery, with prevalence varying by hospital and surgery type. Identifying risk factors like impaction is key for prevention.
Area of Science:
- Veterinary Medicine
- Equine Surgery
- Animal Anesthesia
Background:
- Limited data exists on post-anaesthetic colic (PAC) prevalence and risk factors in horses undergoing non-abdominal procedures.
- Understanding these factors is crucial for improving equine surgical outcomes.
Purpose of the Study:
- To prospectively determine the prevalence of PAC in horses undergoing non-abdominal surgery.
- To identify specific risk factors associated with the development of PAC.
Main Methods:
- A multicentre prospective case-control study involved horses undergoing non-abdominal procedures from April 2004 to June 2005.
- Colic was defined as signs of abdominal pain within 72 hours post-anaesthesia, unrelated to other diseases.
- Multivariable logistic regression analyzed predictor variables for PAC risk, with five controls per case.
Main Results:
- The overall estimated prevalence of PAC was 5.2%, with significant variation between participating centers.
- Impaction was the most common colic diagnosis.
- Hospital center and surgical procedure type were significantly associated with increased PAC risk; preoperative food deprivation and opioid use were confounding factors.
Conclusions:
- PAC prevalence differs significantly between hospitals, suggesting potential hospital-related influences.
- Surgical type is a key factor influencing PAC risk.
- Identifying high-risk horses can guide preventative strategies and improve post-anaesthetic gastrointestinal monitoring.
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