Evaluation of techniques and outcomes of mitral valve repair in dogs

Leigh G. Griffiths, E. Christopher Orton, June A. Boon

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Objective-To describe surgical techniques for and assess outcome of treatment of mitral regurgitation in dogs. Design-Uncontrolled prospective study. Animals-18 dogs with naturally occurring mitral regurgitation. Procedure-All dogs weighed > 5 kg (11 lb) and had severe mitral regurgitation, congestive heart failure (CHF), and no serious noncardiac disease. Left ventricular volume indices, left atrial size, and degree of mitral regurgitation were determined echocardiographically before and after surgery. Repair techniques included circumferential annuloplasty, placement of artificial chordae, chordal fenestration and papillary muscle splitting, and edge-to-edge repair. Factors predictive for surgery survival and resolution of CHF were determined. Results-12 dogs survived surgery. Factors predictive for surgery survival included weight > 10 kg (22 lb) and CHF of less than 6 months' duration. In 9 dogs, CHF resolved for a median period of 1 year (range, 4 months to 3 years) after surgery. One dog had stable CHF at 12 months. One dog died as a result of progressive CHF; another was euthanatized for a noncardiac reason. Left ventricular diastolic volume index was 226.9 ± 117.7 cm3/m2 before surgery and 134.9 ± 70.4 cm3/m2 at 6 months after surgery (n = 10). Factors predictive for resolution of CHF included left ventricular diastolic volume index < 250 cm3/m2 and systolic volume index < 70 cm3/m2. Conclusion and Clinical Relevance-Mitral valve repair may resolve CHF in dogs with severe mitral regurgitation, particularly in dogs that weigh > 10 kg and are treated within 6 months of the onset of CHF.

Original languageEnglish (US)
Pages (from-to)1941-1945
Number of pages5
JournalJournal of the American Veterinary Medical Association
Volume224
Issue number12
DOIs
StatePublished - Jun 15 2004
Externally publishedYes

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heart failure
Mitral Valve
Heart Failure
surgery
Dogs
dogs
Mitral Valve Insufficiency
methodology
Papillary Muscles
prospective studies
Prospective Studies
Weights and Measures
muscles
duration

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Evaluation of techniques and outcomes of mitral valve repair in dogs. / Griffiths, Leigh G.; Orton, E. Christopher; Boon, June A.

In: Journal of the American Veterinary Medical Association, Vol. 224, No. 12, 15.06.2004, p. 1941-1945.

Research output: Contribution to journalArticle

Griffiths, Leigh G. ; Orton, E. Christopher ; Boon, June A. / Evaluation of techniques and outcomes of mitral valve repair in dogs. In: Journal of the American Veterinary Medical Association. 2004 ; Vol. 224, No. 12. pp. 1941-1945.
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