Table 3.

Industry recomendations for transcatheter aortic valve prosthesis sizing

Edwards Sapien XT
Valve size (= device diameter)	20 mm	23 mm	26 mm	29 mm
	Suitable annular dimensions
Aortic annulus diameter [mm]	17–19	18–22	21–25	24–27
Aortic annulus area (mm2)	280–320	310–410	410–520	520–650
Aortic annulus perimeter (mm)	54–68	62–72	72–81	81–90

Medtronic CoreValve
Valve size (= device diameter)	23 mm	26 mm	29 mm	31 mm
	Suitable annular dimensions
Aortic annulus diameter (mm)	18–20	20–23	23–27	26–29
Aortic annulus area (mm2)	254–314	314–416	416–572	572–661
Aortic annulus perimeter (mm)	56–63	63–72	72–85	82–91

mm millimeter, mm² square millimeter