Table 2.
Demographics and preoperative variables at Fontan
| Total | PA plasty | No PA plasty | P value | |
|---|---|---|---|---|
| No of patients | 471 | 139 | 332 | |
| Demographics | ||||
| Age (y) | 3.5 (3.1-4.1) | 3.4 (3.1-4.1) | 3.5 (3.1-4.1) | .95 |
| Weight (kg) | 14 (13-16) | 14 (13-16) | 14 (13-16) | .29 |
| Female sex | 196 (42) | 45 (32) | 151 (46) | .09 |
| Dominant ventricle | .09 | |||
| Right | 235 (50) | 79 (57) | 156 (47) | |
| Left | 200 (43) | 55 (40) | 145 (44) | |
| Biventricle | 31 (7) | 4 (3) | 27 (8) | |
| Undetermined | 5 (1) | 1 (1) | 4 (1) | |
| Heterotaxy | 63 (13) | 22 (16) | 41 (12) | .39 |
| Genetic syndrome | 27 (6) | 9 (7) | 18 (5) | .82 |
| Prematurity | 71 (15) | 24 (17) | 47 (14) | .47 |
| Pre-Fontan medications | ||||
| Digoxin | 33 (7) | 12 (9) | 21 (6) | .49 |
| Sildenafil | 47 (10) | 19 (14) | 28 (8) | .12 |
| Enalapril | 203 (43) | 62 (45) | 141 (43) | .75 |
| Oxygen | 28 (5.9) | 14 (10.1) | 14 (4.2) | .03 |
| Pre-Fontan cath data | ||||
| MPAP (mm Hg) | 11 (9-12) | 11 (9-12) | 10 (9-12) | .29 |
| iPVR (Woods units × m2) | 1.5 (1.2-1.8) | 1.5 (1.2-1.9) | 1.5 (1.2-1.8) | .6 |
| Pulmonary blood flow (L/min/m2) | 2.9 (2.5-3.5) | 3 (2.6-3.6) | 2.9 (2.5-3.3) | .35 |
| Nakata index (mm2/m2) | 226 (188-264) | 213 (185-249) | 231 (195-271) | .11 |
| Pre-Fontan echo data | ||||
| Moderate or worse AV valve regurgitation | 37 (8) | 15 (11) | 22 (7) | .18 |
| Moderate or more depressed ventricular function | 15 (3) | 4(3) | 11 (3) | 1.0 |
Values are presented as median (interquartile range) or n (%). PA plasty, Pulmonary arterioplasty; cath, cardiac catheterization; MPAP, mean pulmonary artery pressure; iPVR, indexed pulmonary vascular resistance; echo, echocardiography; AV, atrioventricular.