The normal upper gastrointestinal examination in the ferret

Area of Science:

• Veterinary Radiology
• Comparative Gastroenterology

Background:

• Upper gastrointestinal (GI) examinations are crucial for diagnosing GI disorders in animals.
• Ferrets are increasingly used as research models, necessitating understanding of their GI physiology.
• Sedation is often used in veterinary radiography, but its effects on ferret GI transit are not well-documented.

Purpose of the Study:

• To evaluate the effects of ketamine and diazepam sedation on upper gastrointestinal transit times in ferrets.
• To establish baseline parameters for upper GI examinations in ferrets.
• To assess the diagnostic quality of radiographs during these examinations.

Main Methods:

• Upper GI examinations using barium sulfate contrast medium were performed on 15 ferrets (11 unsedated, 4 sedated with ketamine and diazepam).
• Radiographs were taken at multiple time points post-administration (0-150 minutes).
• Gastric emptying time, small intestinal transit time, and radiographic visualization were assessed.

Main Results:

• Gastric emptying began immediately in all ferrets.
• Mean total gastric emptying time was longer in sedated ferrets (130 min) versus unsedated (75 min), but this difference was not statistically significant (p=0.18).
• Small intestinal transit time was under 2 hours in all animals; optimal visualization occurred at 20 and 40 minutes. Flocculation and mucosal adherence were common findings.

Conclusions:

• Ketamine and diazepam sedation does not significantly impact key upper GI parameters in ferrets.
• Standard upper GI radiography effectively visualizes ferret GI anatomy, with colonic folds aiding differentiation.
• These findings support the use of sedation in ferret radiography when necessary, without compromising study validity.