What is the role of environmental pheromones and owner presence in Fear Free protocols?

• A. They have no effect on stress levels.
• B. They can help reduce stress and facilitate smoother induction and recovery.
• C. They replace pharmacologic anxiolysis.
• D. They complicate monitoring during anesthesia.

Answer: (B)

In Fear Free in-hospital protocols, calming environmental cues and familiar human presence act to lower an animal’s stress before and during anesthesia. Environmental pheromones provide a chemical signal of safety—synthetic versions that mimic natural canine appeasing or feline calming pheromones help reduce arousal, which can lower heart rate, blood pressure, and stress hormones. This, in turn, supports a smoother, less struggle-filled induction and recovery. Owner presence adds a social buffering effect: the familiar scent, voice, and touch of a trusted person help the animal feel secure, improving cooperation and calmness through handling and procedures. These strategies are adjuncts to pharmacologic anxiolysis, not replacements, and they generally make anesthesia more tolerable and recovery easier without inherently complicating monitoring.