01/07/2025
In a world full of roses, be a daisy! 🌼
Daisy was referred to us by Northwest Veterinary Hospital due to a progressive heart murmur.
Daisy came to see Dr. Gregg Rapoport, DVM, DACVIM at our Portland, OR location. Echocardiographic findings revealed myxomatous valve disease - ACVIM stage B2. This stage includes evidence of myxomatous degeneration (e.g., thickened mitral valve leaflets) and at least mild enlargement of the left atrium and left ventricle, but no previous or current signs of heart failure.
This condition is characterized by thickening of one or more of the four valves in the heart (in Daisy’s case, the mitral valve), allowing backward flow of blood. This is called valvular insufficiency or regurgitation (e.g., mitral regurgitation). With more advanced disease, this can lead to heart enlargement and eventually to congestive heart failure, or accumulation of fluid in the lungs.
Daisy does have a degree of heart enlargement such that she may benefit from a medication called pimobendan. This drug has been shown to delay progression to congestive heart failure in dogs with this condition. This medication increases the heart’s contractile strength and relaxes blood vessels, making it easier to pump blood forward.
We will continue to monitor Daisy closely to ensure she continues to live a comfortable life!