Table 1.

Preoperative echocardiographic measurements

	Mean ± SD	Mean z score ± SD
Aortic valve annulus	4.1 ± 2.3	−4.2 ± 2.0
Mitral valve annulus	11 ± 0.34 mm	0.68 ± 1.6
Left ventricle mass	7.7 ± 6.8 g	−1.96 ± 1.88
Aortic root diameter	0.7 ± 0.3 mm	−1.8 ± 2.2
Ascending aorta diameter	0.4 ± 0.8 mm	−2.9 ± 3.7