Brachycephalic dogs are prone to bradycardia under anesthesia due to their...

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Study for the Anesthesia 2 – Anesthetic Problems and Emergencies Test. Prepare with flashcards and multiple choice questions, each with hints and explanations to enhance your understanding. Get ready for your exam!

Multiple Choice

Brachycephalic dogs are prone to bradycardia under anesthesia due to their...

Explanation:
Bradycardia under anesthesia in brachycephalic dogs comes from increased vagal (parasympathetic) activity. Their airway obstruction and sensitive upper airway reflexes amplify vagal tone, and many anesthetic drugs further enhance this parasympathetic influence. The stronger parasympathetic drive slows the heart, explaining why these breeds are prone to bradycardia. If parasympathetic tone were low, or sympathetic tone were high, the heart would not slow in this way, making bradycardia less likely.

Bradycardia under anesthesia in brachycephalic dogs comes from increased vagal (parasympathetic) activity. Their airway obstruction and sensitive upper airway reflexes amplify vagal tone, and many anesthetic drugs further enhance this parasympathetic influence. The stronger parasympathetic drive slows the heart, explaining why these breeds are prone to bradycardia. If parasympathetic tone were low, or sympathetic tone were high, the heart would not slow in this way, making bradycardia less likely.

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