Table 3.
Analysis of Patients With Clinical T2 Imaging Performed
| Variable | No T2 Imaging (n=104) | T2 Imaging (n=122) | P Value | ||
|---|---|---|---|---|---|
| Sex | |||||
| Men | 68 | (65) | 70 | (57) | 0.219 |
| Women | 36 | (35) | 52 | (43) | |
| Systemic ventricle | |||||
| RV | 65 | (63) | 95 | (78) | 0.011a |
| LV | 39 | (38) | 27 | (22) | |
| Systemic venous anomaly | |||||
| No | 86 | (83) | 100 | (82) | 0.887 |
| Yes | 18 | (17) | 22 | (18) | |
| Pulmonary venous anomaly | |||||
| No | 99 | (95) | 115 | (94) | 1 |
| Yes | 5 | (5) | 7 | (6) | |
| Heterotaxy | |||||
| No | 98 | (94) | 111 | (91) | 0.451 |
| Yes | 6 | (6) | 11 | (9) | |
| Heterotaxy type | |||||
| Polysplenia | 2 | (33) | 1 | (9) | 0.515 |
| Asplenia | 4 | (67) | 10 | (91) | |
| Stage 3 | |||||
| ECFF | 83 | (80) | 101 | (83) | 0.609 |
| Otherb | 21 | (20) | 21 | (17) | |
| Genetic anomaly | |||||
| No | 91 | (88) | 106 | (87) | 0.89 |
| Yes | 13 | (13) | 16 | (13) | |
| CPB time, min | 67 | (59–79) | 65.6 | (60–77) | 0.521 |
| XC, min | 26 | (21–34) | 26.5 | (22–32) | 0.910 |
| % AVVR by MRIc | 5 | (1–8.5) | 7 | (1–11) | 0.075 |
| % SPC by MRId | |||||
| <35% | 52 | (76) | 82 | (69) | 0.5 |
| 35%–50% | 14 | (21) | 29 | (25) | |
| >50% | 2 | (3) | 7 | (6) | |
Data presented as number (percentage) or median (interquartile range), with P value. AVVR indicates atrioventricular valve regurgitation; CPB, cardiopulmonary bypass; ECFF, extracardiac fenestrated Fontan; LV, left ventricle; MRI, magnetic resonance imaging; RV, right ventricle; SPC, systemic‐pulmonary arterial collateral; and XC, cross‐clamp time.
a
Significant P value.
b
Includes lateral tunnel fenestrated Fontans and all nonfenestrated Fontans.
c
AVVR quantification by MRI was only available for 173 patients (60 had no T2 imaging, 113 had T2 imaging).
d
SPC quantification by MRI was only available for 194 patients (72 had no T2 imaging, 122 had T2 imaging).