Table 3.
Catheterization data at each stage after the Norwood procedure
| Variables | Group N | Group I | P value |
|---|---|---|---|
| Pre-BCPC | N = 17 | N = 14 | |
| PA index, mm2/m2, median (IQR) | 177 (147-243) | 152 (146-163) | .03 |
| Rp, Wood units·m2, median (IQR) | 1.51 (0.98-2.25) | 1.90 (1.39-2.71) | .21 |
| SVEF, %, median (IQR) | 62 (55-70) | 59 (48-65) | .46 |
| SVEDP, mm Hg, median (IQR) | 8 (6-10) | 6 (5-10) | .42 |
| AVVR ≥ moderate, n (%) | 1 (5.9) | 2 (14.3) | .58 |
| Reduced VF, n (%) | 1 (5.9) | 2 (14.3) | .58 |
| Pre-TCPC | N = 14 | N = 12 | |
| PA index, mm2/m2, median (IQR) | 176 (138-199) | 121 (95-152) | .03 |
| Rp, Wood units·m2, median (IQR) | 1.30 (.73-1.73) | 1.42 (.95-2.17) | .34 |
| PA pressure, mmHg, median (IQR) | 12 (11-12) | 11 (9-14) | .88 |
| SVEF, %, median (IQR) | 56 (52-65) | 63 (45-65) | .73 |
| SVEDP, mm Hg, median (IQR) | 7 (6-9) | 7 (5-9) | .75 |
| AVVR ≥ moderate, n (%) | 0 (0) | 1 (8.3) | .46 |
| Reduced VF, n (%) | 1 (7.1) | 2 (16.7) | .58 |
| 1 y after TCPC | N = 12 | N = 8 | |
| PA index, mm2/m2, median (IQR) | 190 (154-216) | 131 (86-141) | <.001 |
| Rp, Wood units·m2, median (IQR) | 1.21 (.80-1.67) | 1.64 (.91-2.95) | .18 |
| PA pressure, mmHg, median (IQR) | 10 (9-12) | 10 (9-13) | .73 |
| SVEF, %, median (IQR) | 64 (60-76) | 55 (50-60) | .08 |
| SVEDP, mm Hg, median (IQR) | 7 (4-8) | 7 (4-8) | .97 |
| AVVR ≥ moderate, n (%) | 0 (0) | 0 (0) | 1.00 |
| Reduced VF, n (%) | 0 (0) | 2 (25.0) | .15 |
| 5 y after TCPC | N = 9 | N = 5 | |
| PA index, mm2/m2, median (IQR) | 254 (190-287) | 137 (118-173) | .01 |
| Rp, Wood units·m2, median (IQR) | 1.45 (.63-1.92) | 1.45 (1.13-1.82) | .88 |
| PA pressure, mmHg, median (IQR) | 9 (8-12) | 10 (9-12) | .46 |
| SVEF, %, median (IQR) | 52 (51-64) | 53 (48-58) | .35 |
| SVEDP, mm Hg, median (IQR) | 7 (6-8) | 7 (6-11) | .32 |
| AVVR ≥ moderate, n (%) | 0 (0) | 0 (0) | 1.00 |
| Reduced VF, n (%) | 0 (0) | 2 (40.0) | .11 |
BCPC, Bidirectional cavopulmonary connection; PA, pulmonary artery; Rp, pulmonary artery resistance; SVEF, ejection fraction of single ventricle; SVEDP, systemic ventricular end-diastolic pressure; AVVR, atrioventricular valve regurgitation; VF, ventricular function; TCPC, total cavopulmonary connection.