Table 1.

Neonatal echocardiographic variables

Variable	FAV (n = 18)	AS (n = 19)	p Value
Aortic valve (cm)	0.56 (0.35–0.83)	0.59 (0.42–0.76)	0.35
Aortic valve z score	−2.4 (−4.8 to 0.1)	−1.8 (−2.5 to 0.8)	0.25
Mitral valve lateral dimension	0.8 (0.7–1.3)	0.9 (0.8–1.3)	0.14
Mitral valve lateral dimension z score	−1.6 (−3.0 to −2.6)	−1.2 (−2.5 to 1.9)	0.34
Left ventricular diastolic volume z score	−0.8 (−2.6 to 6.6)	−1.6 (−2.5 to 2.8)	0.63
Left ventricular long axis dimension z score	−0.7 (−2.7 to 1.8)	0.2 (−4.6 to 3.2)	0.06
Left ventricular mass (g)	8.6 (4.1–14.6)	9.0 (4.3–24.4)	0.91
Left ventricular mass z score	0.2 (−2.0 to 1.5)	1.1 (−2.7 to 4.9)	0.19
Left ventricular mass/volume	1.1 (0.8–1.8)	1.2 (0.6–4.6)	0.15
Left ventricular mass/volume z score	1.1 (−0.8 to 6.0)	2.0 (−1.6 to 5.2)	0.19
Left ventricular ejection fraction (%)	40 (18–71)	56 (10–70)	0.03
Peak aortic stenosis gradient (mm Hg)	30 (0–93)	57 (42–111)	0.04
Aortic regurgitation grade	0 (0–3+)	0 (0–2+)	0.78
Endocardial fibroelastosis	17 (94%)	5 (26%)	<0.01

Values are expressed as median (range) or number of patients (percentage).