Key result
Modified mitral Ross operation preserves valve function over 12 years in an infant.
Why the study?
Mitral valve replacement options are limited in infants with small annulus unsuitable for repair or mechanical prosthesis, and long-term outcomes of modified mitral Ross operation are not well documented.
Case Report (n=1)
May support modified mitral Ross in select infants with irreparable valves; leaves open need for larger series to guide adoption.
A 7-month-old boy with a complete atrioventricular septal defect presented with severe left atrioventricular valve regurgitation 4 months after complete repair. As the valve was unsuitable for the repair and the annulus was too small to accommodate a mechanical prosthesis, the modified mitral Ross operation was performed. The long-term outcome was uneventful for 12 years. The mitral Ross procedure is an old-described technique in which classically the pulmonary autograft is encased in a prosthetic conduit preventing any growth potential. On the contrary, the modified technique used in this case shows that the long-term function can be obtained. This procedure may be a valuable option when mitral valve replacement is necessary in infants.
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Bellaing et al. (2018) conducted a case report in Severe left atrioventricular valve regurgitation after repair of a complete atrioventricular septal defect (n=1). Modified mitral Ross operation (pulmonary autograft without prosthetic conduit) was evaluated on Long-term outcome and function. A modified mitral Ross operation using a pulmonary autograft in a 7-month-old infant resulted in an uneventful clinical course and adequate long-term valve function over 12 years of follow-up.
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