Myxomatous mitral valve disease (MMVD) is the most common cardiovascular disease in the dog. A study examined the records of thirty-two miniature poodles with MMVD.

Findings are highlighted below:

• The mean age of the dogs when diagnosed was 11 years.  

• Clinical signs included exercise intolerance, syncope and coughing.

• Eighteen dogs were classified as ACVIM Stage B1, 12 as stage B2, and two as stage C.

• Only one dog had radiographic evidence of congestive heart failure.

• Mean diastolic left ventricle dimension normalized to body weight was 1.6 (±0.4) and mean systolic was 0.8 (±0.3).

• Mitral valve prolapse was subjectively classified as mild or moderate in 19 dogs and severe in two.

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Myxomatous mitral valve disease in the miniature poodle: A retrospective study.