A case of Reverse Remodelling Secondary to Rupture of Chordae Tendineae in a Dog with Myxomatous Mitral Valve Disease
RUAN Qianhua
LIN Jiayan
Lin Shiqi
LI Ying
Liu Chuandun
Abstract：Rupture of chordae tendineae is a common complication of myxomatous mitral valve disease(MMVD)in dogs and usually results in severe mitral regurgitation as well as marked dilatation of the atria and ventricles.As compensation progresses in the hearts of dogs with tendon rupture,it can manifest as reverse cardiac remodelling,whereby the originally dilated heart becomes smaller or even returns to normal.A 10-year-old brown poodle came to the hospital with significant exercise intolerance.Echocardiography revealed a ruptured mitral tendon cable with significant systolic regurgitation and marked left atrial and ventricle dilatation.Reexamination of the affected dog(at 3-and 9-months post-diagnosis)revealed a gradual improvement in the degree of cardiac dilatation to normal size,consistent with cardiac reverse remodelling features.The affected dog had a favourable prognosis and showed a significant decrease in the frequency of exercise intolerance.Cases of cardiac reverse remodelling are uncommon in clinical practice.The authors report the long-term echocardiographic follow-up and diagnosis of the affected dog in this case in order to provide diagnostic ideas and references for the clinical diagnosis and treatment of this type of reverse remodelling in MMVD dogs with rupture of chordae tendineae.
Keywords：DogRupture of chordae tendineaeMyxomatous mitral valve diseaseReverse remodellingEchocardiography
Publication Date：2025-06-18
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 115-120 )