Table 4.

Data from Imaging Studies

	TGA	Fontan
Transthoracic echocardiogram	n=16	n=69
LV ejection fraction (n=11)	65 (IQR: 63–68, Range: 60–74)	n/a
LV shortening fraction (n=16)	35 (34–37, Range: 32–38)	n/a
Systemic ventricular function (n=19)
Normal	n/a	86% (59)
Trivial/Mildly diminished	n/a	9% (6)
Moderately diminished	n/a	6% (4)
Severely diminished	n/a	0% (0)
Systemic AV valve regurgitation
None/Trivial	n/a	30% (21)
Mild	n/a	39% (27)
Moderate	n/a	29% (20)
Severe	n/a	1% (1)
Cardiac MRI	n=0	n=8
Ejection fraction (%)	n/a	63% (IQR: 59–65, Range: 46–69)
Indexed systemic ventricular stroke volume (ml/sqm)	n/a	33 (IQR: 27–42, Range: 22–62)
Cardiac index (L/min/sqm)	n/a	2.7 (IQR: 2.2–3.1, Range: 1.9–4.0)

Abbreviations: AV: atrioventricular, LV: Left ventricular