Practice Quiz

Veterinary Technician

Category - Anesthesia

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What is the difference between VOC (Vaporizers out of circle) and VIC (Vaporizers in circle) systems?
  1. VOC has precision-type vaporizers.
  2. VIC systems use the animal's breathing to move oxygen through the vaporizer.
  3. VIC systems have more difficulty in maintaining proper surgical plane of anesthesia.
  4. All of the above
Explanation
Answer: D - Some of the differences between VOCs and VICs is the VOC system requires precision-type vaporizers that can deliver almost exact concentrations of anesthetic while the VIC system relies on the animal's breathing (or IPPV) to move gas through the vaporizer to pick up inhalant. Due to relying on respiration and the issue with changing ambient temperatures, the VIC output may not be reliable, causing issues with proper surgical plane of anesthesia.
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