Yuan H, Wu Z, Lu T, et al. - Given that mitral valve replacement (MVR) results are not always favorable in children particularly in patients weighing less than 10 kg, so, researchers herein assessed long-term results of MVR in their institution. They conducted this retrospective analysis with 9 young children weighing less than 10 kg who received MVR with mechanical prostheses. There was variation in surgical technique among patients with prostheses implanted in the intra-annular (n = 5), supra-annular (n = 1), or with a Dacron conduit segment in the supra-annular position (n = 3). After surgery, two early death and one late death were reported. Findings revealed that reliable valve function and excellent survival were achieved with the tailored surgical strategy utilized for MVR among infants. Revision was unavoidable because of somatic growth, but appropriate durability was shown by bileaflet mechanical prostheses.