Degenerative mitral valve disease is the most common heart condition in dogs. Early diagnosis and modern medication allow many affected dogs to maintain excellent quality of life.
Degenerative valve disease illustrates both the welfare burden of chronic progressive cardiac disease and the transformative impact of evidence-based veterinary medicine. Dogs in heart failure experience real distress: breathlessness, fatigue, disrupted sleep, and exercise intolerance significantly impair quality of life. However, modern cardiac management has dramatically improved the welfare prognosis for affected dogs. Starting pimobendan at the appropriate disease stage delays heart failure onset by an average of 15 months — over a year of good-quality life. Once failure develops, combination diuretic therapy and cardiac medications can maintain comfort for months to years. Regular veterinary monitoring and owner education about early signs of decompensation are essential for maintaining welfare.