Assistant Laboratory Animal Technician (ALAT) Practice Exam

What is the reason rodents and rabbits are not fasted prior to surgery?

1. They may overeat afterwards

2. They can vomit easily

3. They cannot vomit

4. It affects their blood sugar levels

The correct answer is: They cannot vomit

Rodents and rabbits are not fasted prior to surgery primarily because they cannot vomit. This physiological characteristic significantly influences the preoperative care of these animals. Unlike many other species, such as dogs or cats, which may have a risk of aspiration if they vomit due to fasting, rodents and rabbits have an anatomical structure that prevents them from regurgitating. Therefore, fasting does not pose the same risks and can even be detrimental, as it may lead to decreased blood sugar levels and a higher risk of hypoglycemia. This is especially crucial in surgical situations, as maintaining stable blood sugar levels is important for the overall health and recovery of the animal. While the possibility of overeating afterwards, the risk of vomiting, and blood sugar levels are all important considerations in veterinary care, they do not directly apply to the specific reason for not fasting these animals. Understanding their unique physiology helps inform proper preoperative preparation and care.