Evaluation of intraoperative culture results as a predictor for short-term incisional complications in 49 horses undergoing abdominal surgery.

The research article examines the association between bacteria found during abdominal surgery in horses and the occurrence of post-surgery complications in the incision area. The findings do not offer strong evidence that an intraoperative culture test is useful in predicting such outcomes.

Methodology

• The research involved studying bacterial isolates taken during abdominal surgery performed on 49 horses. The bacteria were extracted from two key areas – the peritoneal fluid and the section of the intestine undergoing surgical procedures.
• The main goal was to determine if there is a correlation between the bacteria found during the operation and incisional complications that occur in the short term after surgery.

Findings

• The study found that 96% of the horse samples had at least one positive bacterial culture, indicating that most horses going through abdominal surgeries will likely have some bacteria present.
• The organisms most commonly isolated were Escherichia coli, Streptococcus spp, and Enterococcus spp.
• Horses that had small intestinal resections were more likely to grow obligate anaerobes and enteric organisms. For horses with lesions in the small intestine, they were also more likely to grow enteric organisms, and less likely to cultivate non-enteric organisms.
• Conversely, horses without enterotomy or resection procedures were more apt to develop 3 different isolates and did not grow any obligate anaerobes.
• Out of all the horses studied, 10% continued with incisional drainage after their operation, meaning a certain percentage of surgical wounds continued to emit fluid after surgery.
• It was further observed that horses with a high preoperative peripheral leukocyte count of more than 8,500 cells per micro-liter of blood were more likely to develop this incisional drainage. Leukocytes are also known as white blood cells and are involved in the fight against infections. A high count could indicate an ongoing struggle against an illness or infection.

Conclusion

• Despite the detailed analysis, the study did not find solid evidence to support the routine use of intraoperative culture tests to predict short-term incisional complications post abdominal surgery in horses.
• That being said, the study concludes that more research is needed, particularly focusing on horses considered at higher risk for incisional complications, to further evaluate the potential benefits and usefulness of the intraoperative culture.