Which vagal maneuver is listed for use in dogs?

Which vagal maneuver is listed for use in dogs?

• A. Carotid Sinus Massage (dog)
• B. Nasal-Cardiac Reflex (cat)
• C. Ocular-Cardiac Reflex (dog/cat)
• D. Gag Reflex (unrelated)

Answer: (A)

The key idea is using a vagal maneuver to increase parasympathetic tone and slow conduction through the AV node, which can help terminate or slow certain supraventricular tachycardias in dogs. Carotid sinus massage accomplishes this by gently compressing the carotid sinus, stimulating baroreceptors that trigger a vagal response. The resulting bradycardia and slowed AV nodal conduction make it the most appropriate listed option for use in dogs. Other options describe reflexes that can cause bradycardia, but they are not the standard maneuvers used in dogs for rhythm control. The gag reflex is not a vagal maneuver for rhythm management and is unrelated. The nasal-cardiac reflex is more commonly described in cats, and the ocular-cardiac reflex is a bradycardic reflex that can occur with eye manipulation but is not typically listed as a routine vagal maneuver for managing arrhythmias in dogs.

The key idea is using a vagal maneuver to increase parasympathetic tone and slow conduction through the AV node, which can help terminate or slow certain supraventricular tachycardias in dogs. Carotid sinus massage accomplishes this by gently compressing the carotid sinus, stimulating baroreceptors that trigger a vagal response. The resulting bradycardia and slowed AV nodal conduction make it the most appropriate listed option for use in dogs.

Other options describe reflexes that can cause bradycardia, but they are not the standard maneuvers used in dogs for rhythm control. The gag reflex is not a vagal maneuver for rhythm management and is unrelated. The nasal-cardiac reflex is more commonly described in cats, and the ocular-cardiac reflex is a bradycardic reflex that can occur with eye manipulation but is not typically listed as a routine vagal maneuver for managing arrhythmias in dogs.