North American Veterinary Licensing Examination (NAVLE) Practice Test

In cases of colitis in foals, which of the following tests is less commonly used for diagnosis?

1. Ultrasound examination

2. Rectal exam

3. Fecal examination

4. Endoscopy

The correct answer is: Endoscopy

In the context of diagnosing colitis in foals, the usage of endoscopy is less common compared to the other diagnostic tools listed. Endoscopy is a specialized procedure that involves inserting a camera with a light source into the gastrointestinal tract to directly visualize and obtain samples from the intestines. While it can provide valuable information about the mucosal surfaces of the gastrointestinal tract, its application is often reserved for specific cases where direct visual assessment is needed. On the other hand, ultrasound examination is a non-invasive imaging technique that is frequently used in veterinary practice to assess the overall health of the abdomen, including the gastrointestinal tract. A rectal exam is a straightforward procedure that veterinarians commonly perform to evaluate the condition of the rectum and lower intestinal tract and to assess fecal consistency. Fecal examination is routinely conducted to test for various pathogens such as parasites and bacteria that may contribute to gastrointestinal diseases, making it a common initial step in diagnosing colitis. Overall, while endoscopy has its place in gastrointestinal diagnostics, it is not as commonly employed for diagnosing colitis in foals as the other mentioned options.