Table 2.

Clinical characteristics of the SVCHD group (N = 54)

Characteristics	n (%)
Single-ventricle diagnosis
TA	19 (35)
DILV	13 (24)
Hypoplastic RV	8 (15)
HLHS/variants	4 (7)
DORV	3 (6)
AVC	2 (4)
Ebsteins	1 (2)
Other complex anatomy	4 (7)
Fontan type
Classic RA to PA	15 (28)
Bjork RA to RV	2 (4)
Lateral tunnel	24 (44)
Extracardiac Fontan	13 (24)
Fontan fenestration
Yes	18 (33)
No. of surgeries
1–2	18 (33)
3–4	30 (56)
5	6 (11)
Time from last surgery (years)
<5	19 (35)
≥5	35 (65)
NYHA classification
I	26 (48)
II	17 (32)
III	11 (20)
Pacemaker
Yes	22 (41)
Oxygen saturation
≤90	17 (31)
>90	37 (69)
BMI
Underweight	5 (10)
Normal weight	31 (57)
Overweight	9 (17)
Obese	2 (4)

RV right ventricle, RA right atrium, HLHS hypoplastic left heart syndrome, PA pulmonary artery, TA tricuspid artresia, DILV double-inlet left ventricle, AVC atrioventricular canal