[Left ventricular ejection impediment during mitral valve replacement. Apropos of a case after insertion of a Carpentier-Edwards bioprosthesis].

Left ventricular ejection impediment is one of the complications of mitral valve replacement, especially in case of isolated mitral stenosis with small left ventricle. The use of a "low profile" valve does not prevent this complication. The diagnosis is based on catheterization but the advent of the ultrasound-Doppler may make it easier.