History
A 10-year-old girl with known rheumatic heart disease presented with
severe shortness of breath. She underwent a bioprosthetic mitral valve
(MV) replacement (23-mm Perimount bovine pericardial leaflets sutured
inside the stent) due to severe combined mitral stenosis and
regurgitation. She did well for the next 2 years and then developed
shortness of breath NYHA class III that lasted 12 months.