A rabbit model of perforated appendicitis with peritonitis

Area of Science:

• Veterinary Medicine
• Surgical Research
• Microbiology

Background:

• Acute perforating appendicitis and subsequent peritonitis are significant clinical challenges.
• Existing animal models do not accurately replicate the human condition, limiting research.
• A need exists for a reliable animal model to study appendicitis and peritonitis.

Purpose of the Study:

• To develop and validate a novel animal model in rabbits that simulates human acute perforating appendicitis and peritonitis.
• To characterize the bacterial flora in the induced peritonitis.
• To establish a reproducible model for future therapeutic investigations.

Main Methods:

• A novel surgical technique was employed in New Zealand White rabbits.
• The induced peritonitis was analyzed for aerobic and anaerobic bacterial composition and concentration.
• Model efficacy was assessed by successful induction of peritonitis and survival rates.

Main Results:

• The developed technique successfully created a model of acute perforating appendicitis and peritonitis in 70% of rabbits.
• The bacterial flora in the rabbit model closely resembled that found in human peritonitis, including aerobes and anaerobes.
• The model demonstrated satisfactory postoperative survival, suitable for therapeutic studies.

Conclusions:

• A new, reliable animal model for studying acute perforating appendicitis and peritonitis has been established in rabbits.
• This model's fidelity to human pathophysiology and microbiology makes it valuable for preclinical research.
• The validated model facilitates the investigation of novel treatments for appendicitis-induced peritonitis.