Work

Redo mitral valve repair under repeat cardiopulmonary bypass in a dog

Year: 2025

Type: article

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.

Source: Veterinary Surgery

DOI: 10.1111/vsu.70040

Authors: Kippei Mihara, Yuya Suzuki, Kentaro Ito

Institutions: Hirosakiaiseikai Hospital, Miyake Eye Hospital, Okinawa Miyako Hospital

Language: English

Topic: Cardiac Valve Diseases and Treatments

Subfield: Cardiology and Cardiovascular Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $3,000