Mitral Valve Repair Surgery in Dogs: A Lifesaving Option
What is Mitral Valve Disease (MVD)?
Mitral valve disease (MVD) is the most common heart condition in dogs, especially in small to medium-sized breeds as they age. The mitral valve thickens and leaks, leading to heart enlargement, congestive heart failure, and symptoms like tiredness, difficulty breathing, and arrhythmias. While medications can manage symptoms, they do not stop the disease’s progression. Until recently, MVD was considered an uncurable disease with only palliative therapy, but surgical repair is now a proven, lifesaving option for many dogs.
The Surgical Solution
Mitral valve repair surgery is a complex open-heart procedure performed under cardiopulmonary bypass. The surgery involves repairing the valve and its supporting structures (chordae tendineae), significantly reducing mitral regurgitation and allowing most dogs to stop or reduce heart medications. The procedure is highly specialized and requires a skilled surgical team.
Success Rates and Outcomes
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High Success Rates: Leading surgical centers report success rates above 90%, with most dogs experiencing a dramatic improvement in quality and length of life. The heart’s left atrium can even shrink back to near-normal size within days to weeks after surgery, and many dogs enjoy years of active life post-repair.
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Long-Term Benefits: Dogs typically recover well, and most can discontinue heart failure medications after surgery. Long-term studies show that 80% of dogs are alive one year post-operatively, and 78% are alive after two years.
Who is a Candidate?
Not every dog with MVD is a candidate for surgery. Ideal candidates are generally young to middle-aged dogs in otherwise good health, with advanced disease (ACVIM Stages B2, C, or D). Pre-surgical screening is essential to assess suitability. Early preparation and consultation with a veterinary cardiologist are recommended.
What to Expect
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Before Surgery: Dogs undergo thorough pre-operative testing, including echocardiograms and blood work. Owners should stop certain medications and supplements (like blood thinners) as advised.
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During Surgery: The procedure lasts several hours. The surgical team repairs the valve and chordae, aiming to reduce regurgitation by at least 80%.
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After Surgery: Dogs require several weeks of restricted activity to allow the heart to heal. Most can return to normal life within three months, though regular follow-ups are necessary.
Costs and Travel
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Costs: Surgery and post-operative care typically costs a minimum of $20,000, depending on the location and specific needs of the dog. Travel and accommodation expenses likely will also apply.
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Travel Considerations: Some centers require an extended stay (up to three weeks) for pre-operative testing, surgery, and post-operative monitoring.
Why Consider Surgery?
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Extended Life: Surgery can add years of quality life, with many dogs living happily for 2–5+ years post-repair.
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Improved Quality of Life: Most dogs experience a significant reduction in symptoms and can enjoy normal activities.
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Reduced Medication: Many dogs no longer need heart failure medications after successful surgery.
Resources and Support
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Educational Organizations: Non-profits and advocacy groups provide education, support, and resources for families considering mitral valve repair. They offer guidance on the process, travel, and connecting with other pet owners.
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Veterinary Cardiologists: Work closely with your local cardiologist and the surgical team to determine if your dog is a suitable candidate.
Hundreds of dogs worldwide have benefited from this surgery. Their stories—shared by organizations and pet owners—offer hope and practical insights for families facing MVD.
For more information or to explore surgery for your dog, book a consultation with me at one of the clinics where I work.
