Atrial Fibrillation in Dogs

Atrial fibrillation produces an irregular heart rhythm in dogs. It commonly accompanies heart disease, although some large dogs develop it independently; treatment depends on the overall cardiac assessment.

Editorial overview based on the linked VCA resource; this is not the complete original handout. Prepared 2026-10-03; not veterinarian-reviewed. Diagnosis and treatment, including medication choice and dose, require veterinary guidance.