Intra-abdominal adhesions in horses: a retrospective evaluation of repeat laparotomy in 99 horses with acute gastrointestinal disease.

This research outlines a study into the occurrence of abnormal intra-abdominal adhesions in horses following exploratory laparotomy and its impact on long-term survival. The study also identifies risk factors for adhesion formation, aiming to discern effective adhesion prevention measures.

Objective and Methodology of the Study

• The study had four key objectives:
  • To quantify the occurrence of abnormal abdominal adhesion formation following exploratory laparotomy.
  • To identify where the adhesion formation occurred and correlate it with the initial lesion location.
  • To investigate if the development of intra-abdominal adhesions negatively impacts long-term survival rates.
  • To pinpoint risk factors for adhesion formation.
• A sample group of 1,014 horses that had been medically treated for acute gastrointestinal disease was used for the study, with 113 (10.1%) of these undergoing repeat laparotomy (a surgical procedure involving an incision into the abdomen).
• Surgical records for 99 out of these 113 horses were used to gather data for further analysis.

Results and Findings

• The most common diagnosis at repeat laparotomy was the formation of abnormal adhesions, accounting for 28% of the cases.
• Complications with the anastomosis (the connection created by the surgical procedure) were the second most common cause, accounting for 16% of the cases.
• The study found no significant associations between the location of adhesions and the original lesion site, the resection process, or endotoxemia (presence of endotoxins in the blood causing fever or septic shock).
• These findings suggested surgical trauma as the most likely contributing factor to the formation of adhesions.

Conclusion and Implications

• Based on the study’s findings, the authors determined a strong need for pan-abdominal adhesion prevention measures in all equine candidates for exploratory laparotomy, irrespective of the specific site of their surgery. This is in opposition to the previously common practice of using site-specific prevention measures.
• This impactful conclusion implies a change in the approach to preventing adhesion formation, calling for widespread preventative measures across the abdominal region rather than localized procedures.