Key result
Mitral valve repair with artificial chordae maintains functional orifices with controlled regurgitation and no significant stenosis.
Why the study?
Severe mitral regurgitation associated with isolated double-orifice mitral valve in adults is uncommon, and its diagnosis and surgical management remain challenging.
Case Report (n=1)
Standard mitral valve repair techniques including artificial chordae and annuloplasty, guided by 3D transesophageal echocardiography, can successfully treat severe mitral regurgitation in adults with isolated double-orifice mitral valves.
May guide individualized repair in rare double-orifice mitral valve; leaves open validation of 3D imaging utility in larger cohorts.
BACKGROUND: Severe mitral regurgitation (MR) associated with isolated double-orifice mitral valve (DOMV) in adults is uncommon, and both its diagnosis and surgical management remain challenging. CASE SUMMARY: A 60-year-old woman presented with symptomatic severe MR and was scheduled for mitral valve repair. Transthoracic echocardiography suggested abnormal subvalvular morphology and demonstrated dual left ventricular inflow jets, raising suspicion for DOMV. Three-dimensional transesophageal echocardiography confirmed a complete-bridge DOMV. Intraoperatively, 2 independent parachute-like subvalvular apparatuses were identified. Mitral valve repair using artificial chordae and annuloplasty preserved the functional valve orifices, with well-controlled MR and no significant mitral stenosis at 1-year follow-up. CONCLUSION: Characteristic transthoracic echocardiography findings may raise suspicion for DOMV, whereas 3-dimensional transesophageal echocardiography remains essential for definitive anatomical assessment. Standard repair techniques with preservation of the functional valve orifices can provide satisfactory outcomes.
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Kojima et al. (2026) conducted a case report in Severe mitral regurgitation associated with isolated double-orifice mitral valve (n=1). Mitral valve repair using artificial chordae and annuloplasty was evaluated on Mitral regurgitation and mitral stenosis at 1 year. Mitral valve repair using artificial chordae and annuloplasty preserved functional valve orifices, achieving well-controlled mitral regurgitation with no significant stenosis at 1-year follow-up.
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