Table 8.2.

Criteria for technical success (initial criteria) and criteria that indicate potential outcome to postnatal biventricular correction (modified criteria)

Initial criteria (all of which must be present)	Modified criteria*
LV long-axis Z-score > -2	Aortic stenosis or atresia (mandatory)
LV dysfunction capable of generating ≥ 10 mmHg pressure gradient across aortic valve or ≥ 15 mmHg mitral regurgitation jet gradient	LV long-axis Z-score > -2 (mandatory)
Mitral annulus Z-score > -3	Meet, at least, 4 of the following 5 parameters: • LV long-axis Z-score > 0; • LV short-axis Z-score > 0; • Aortic annulus Z-score > -3,5; • Mitral annulus Z-score > -2; • Aortic valve systolic gradient and/or LV-LA mitral regurgitation ≥ 20 mmHg

LA: left atrium; LV: left ventricle.

^*Source: adapted from McElhinney et al.¹⁹⁵