Mitral and Tricuspid Dysplasia

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Mitral valve dysplasia is a congenital malformation of the valve that closes between the left atrium and left ventricle to prevent backflow of blood when the heart beats. Because of this malformed valve, the heart performs less efficiently.

Tricuspid valve dysplasia is a congenital malformation of the valve that closes between the right atrium and right ventricle to prevent backflow of blood when the heart beats. Because of this malformed valve, the heart performs less efficiently.

Common consequences of both of these malformations include heart failure and arrythmias (abnormal heart rhythms). Once heart failure develops, the symptoms can be controlled with medication and exercise restriction, but there is no cure for the abnormal heart valve, except surgery. Signs of heart failure include difficulty breathing, distended abdomen, or exercise intolerance.

Should any of these signs develop or your pet begins to feel unwell, you should have him or her examined by a veterinarian. Despite treatments with medication and exercise restriction, the life expectancy for pets with either mitral or tricuspid valve dysplasia can be as short as 1-3 years, depending on the severity of the malformation.

24 Hour Emergency & Specialty

Boston West Veterinary Emergency and Specialty

Natick, MA 01760
508.319.2117

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Capital District Veterinary Referral Hospital

Latham, NY 12110
518.785.1094

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Massachusetts Veterinary Referral Hospital

Woburn, MA 01801
781.932.5802

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Port City Veterinary Referral Hospital

Portsmouth, NH 03801
603.433.0056

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SAVES

Lebanon, NH 03766
603.306.0007

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General Practice, Emergency & Specialty

Bulger Veterinary Hospital

North Andover, MA 01845
ER: 978.725.5544 GP: 978.682.9905

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