Key result
Mechanical aortic and mitral sizers were 0.5 to 1.0 mm larger than marked sizes, with varying relationships between actual valve sizes and sizers across manufacturers.
Significant discrepancies exist between the labeled and actual dimensions of prosthetic valves and sizers, varying by manufacturer and valve type, which may impact optimal sizing during surgery.
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May affect intraoperative valve sizing; animal data leave open manufacturer-specific human validation.
Cochran et al. (1996) studied Aortic or mitral valve replacement. Prosthetic valves and sizers vs. Marked dimensions was evaluated on Difference between actual and marked dimensions. Mechanical aortic and mitral sizers were 0.5 to 1.0 mm larger than marked sizes, with varying relationships between actual valve sizes and sizers across manufacturers.
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