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Nominal size in six bileaflet mechanical aortic valves: a comparison of orifice size and biologic equivalence  John B Chambers, MD, FACC, Lionel Oo, FRCS,

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Presentation on theme: "Nominal size in six bileaflet mechanical aortic valves: a comparison of orifice size and biologic equivalence  John B Chambers, MD, FACC, Lionel Oo, FRCS,"— Presentation transcript:

1 Nominal size in six bileaflet mechanical aortic valves: a comparison of orifice size and biologic equivalence  John B Chambers, MD, FACC, Lionel Oo, FRCS, Andrew Narracott, PhD, Pat M Lawford, PhD, Christopher I Blauth, MS, FRCS  The Journal of Thoracic and Cardiovascular Surgery  Volume 125, Issue 6, Pages (June 2003) DOI: /S (03)

2 Figure 1 Method of measuring internal diameter. Digitized image of inflow surface of Carbomedics standard valve with internal diameter as used in calibration procedures. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (03) )

3 Figure 2 Diagrams of bileaflet mechanical valves. Intra-annular valve (eg, Carbomedics standard or St Jude Medical standard) as implanted in patient (A) and as inserted into annulus machined in polypropylene block (B). Supra-annular valve with component of housing designed to fit within annulus (eg, Medical Carbon Research Institute On-X and St Jude Medical EHP) as implanted in patient (C) and as inserted into annulus machined in polypropylene block (D). Supra-annular valve with no intra-annular component (eg, Carbomedics Top Hat) as implanted in patient (E) and as inserted into annulus machined in polypropylene block (F). The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (03) )

4 Figure 3 Internal diameter in relation to nominal size for six designs of bileaflet mechanical valve. CM, Sulzer Carbomedics; Std, standard; R, reduced cuff; TH, supra-annular Top Hat. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /S (03) )

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