Peer-reviewed veterinary case report
Surgical mitral valve repair results in dogs with mitral valve disease
By Matsuura, K et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2022·VCA Japan Shiraishi Animal Hospital, Japan·View original on PubMed →
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Original publication title: The outcome of surgical mitral valve repair with loop-in-loop technique in dogs with different stage myxomatous mitral valve disease.
- Species:
- dog
Plain-English summary
A group of 55 adult dogs with myxomatous mitral valve disease underwent surgery to repair their heart valves using a technique called loop-in-loop. Most dogs (90%) survived the surgery, but those in the most advanced stage of the disease had a lower survival rate. One month after surgery, significant improvements were seen, including a reduction in heart size and no signs of mitral regurgitation (leaking of the valve). All heart medications were stopped three months post-surgery, and the dogs remained stable during the two-year follow-up.
People also search for: dog heart surgery recovery · mitral valve disease in dogs · loop-in-loop technique for dog heart problems
Abstract
OBJECTIVES: Surgical mitral valve repair is a possible option for dogs with myxomatous mitral valve disease. However, information on surgical results and postoperative echocardiography is limited. This study aimed to verify the stage-specific surgical results of mitral valve repair and postoperative echocardiographic changes for two years following surgery. ANIMALS: Adult dogs (n = 55) treated with surgical mitral valve repair using the loop-in-loop technique were included in this study. Medical records were retrospectively reviewed. RESULTS: Ninety percent of cases (50/55) survived to discharge, which survival was significantly decreased in myxomatous mitral valve disease advanced-stage dogs, Stage B2 (n = 14): 100%, Stage C (n = 27): 96.2%, and Stage D (n = 14): 71.4%. Significant reductions of overall heart size (vertebral heart score: preoperative 11.4 vs. post one month 10.2, P < 0.001), left atrium (left atrium to aortic root ratio: preoperative 2.3 vs. post one month 1.5, P < 0.001) and left ventricle (left ventricular end-diastolic diameter [normalized for bodyweight]: preoperative 2.2 vs. post one month 1.5, P < 0.001) were documented one month after surgery, showing successful management of mitral regurgitation. All medications for mitral valve disease were discontinued three months after surgery. The recurrence of mitral regurgitation was not evident during the two-year follow-up period. CONCLUSIONS: Surgical mitral valve repair with the loop-in-loop technique is associated with significant decreases in indices of cardiac size at one-month post-repair. Disease stage influences operative survival after surgical mitral valve repair.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/35810732/