Peer-reviewed veterinary case report
Dog had second mitral valve repair surgery after heart failure
By Mihara, Kippei et al.·Published in Veterinary surgery : VS·2025·Chayagasaka Animal Hospital, Japan·View original on PubMed →
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Original publication title: Redo mitral valve repair under repeat cardiopulmonary bypass in a dog.
- Species:
- dog
Plain-English summary
An 11-year-old Chihuahua was brought in for worsening heart failure due to a leaking mitral valve, a problem that had returned after previous surgery. The dog underwent a second surgery to repair the valve, which involved using artificial supports to fix the valve properly. After the procedure, the dog's heart function improved significantly, and he lived for over five more years without any recurrence of the heart issue. This case shows that repeat heart surgery can be successful in dogs with similar problems.
People also search for: dog heart failure treatment · Chihuahua mitral valve surgery · dog heart surgery recovery
Abstract
OBJECTIVE: To report the lifelong outcome of a redo mitral valve repair performed under repeat cardiopulmonary bypass (CPB) in a dog. STUDY DESIGN: Case report. ANIMAL: An 11-year-old, 4.0-kg neutered male Chihuahua, previously treated with surgical mitral valve repair for myxomatous mitral valve disease at the age of eight, presented with recurrent left heart failure caused by worsening residual mitral regurgitation (MR) following the initial repair. METHODS: Redo mitral valve repair was performed 2 years and 7 months after the initial surgery. The procedure, conducted under hypothermic CPB, involved adding and adjusting eight artificial chordae to align with the reconstructed mitral annular plane. RESULTS: The redo surgery successfully reduced MR, improved cardiac function, and resulted in more than 5 years of survival without MR recurrence. CONCLUSION: This case demonstrates the feasibility of redo mitral valve repair in managing recurrent MR in dogs, highlighting its potential to improve long-term outcomes in veterinary surgery and cardiology.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/41090467/