Evaluation of surgical treatment for signs of acute abdominal pain in draft horses: 72 cases (1983-2002).

The study investigates the impact of surgical treatment for acute abdominal pain in heavy and light draft horses, suggesting that heavier horses are more prone to anesthetic and post-operative complications, ultimately leading to lower survival rates.

Research Objectives

• The main goal of the study was to assess if draft horses with heavier weight (greater than or equal to 680kg) had higher chances of post-operative complications and lower survival rates after undergoing surgical treatment for acute abdominal pain compared to their lighter counterparts (less than 680kg).
• The researchers also wanted to identify which potential complications were associated with lower survival rates post-surgery.

Methodology

• As part of their retrospective case study, the researchers reviewed medical records of 72 draft horses that underwent exploratory celiotomy (surgical operation to open the abdominal cavity) due to signs of acute abdominal pain, between October 1983 and December 2002.
• The records of draft horses that had a celiotomy performed to correct reproductive abnormalities were excluded from the study.

Results

• The researchers observed that heavy draft horses required longer durations of anesthesia, experienced more post-operative complications, and had lower survival rates compared to lighter draft horses.
• Among the horses that recovered from anesthesia, 76% faced postoperative complications. The ones adversely affecting survival rates encompassed myopathy and neuropathy, ileus, diarrhea, and endotoxemia. Every horse with post-operational myopathy and neuropathy either died or had to be euthanized.
• The short-term survival rate for those recovering from anesthesia was 60%. Moreover, those that underwent small intestinal surgery had worse prognosis for short-term survival than horses undergoing large intestinal surgery.
• The study also found that the long-term (>1 year) survival rate for horses was 50%.

Conclusions

• The researchers concluded that draft horses weighing more than 680 kg undergoing surgery due to acute signs of abdominal pain had more complicated post-operative recoveries, longer durations under anesthesia, and higher mortality rates when compared to lighter draft horses.