Table 2 Comparison between transplant-free survivors and non-survivors of biventricular conversion procedure in the BHLHS group
| Â | Survivors | Non-survivors | P-value |
|---|---|---|---|
N | 16 | 6 | Â |
Age at CMR (mo) | 46 (0–82) | 6.5 (0–46) | 0.02 |
Age at conversion (mo) | 47 (0–82) | 5 (0–46) | 0.02 |
Procedure to increase LV flow | 14 (93) | 2 (40) | 0.01 |
CMR parameters | Â | Â | Â |
LV EDV (ml/m2) | 62 (28–88) | 31 (21–48) | 0.001 |
LV ESV (ml/m2) | 23 (9–49) | 15 (10–17) | 0.02 |
LV stroke volume (ml/m2) | 35 (20–60) | 18 (4–32) | 0.002 |
LV ejection fraction (%) | 62 (45–79) | 58 (20–67) | 0.29 |
RV EDV (ml/m2) | 76 (52–132) | 97 (66–110) | 0.07 |
RV ESV (ml/m2) | 39 (22–82) | 40 (31–46) | 0.68 |
RV stroke volume (ml/m2) | 38 (17–64) | 59 (36–65) | 0.02 |
RV ejection fraction (%) | 51 (27–66) | 58 (54–66) | 0.08 |
LV-to-RV stroke volume ratio | 0.9 (0.5–1.7) | 0.3 (0.06–0.7) | <0.001 |
MV-to-TV inflow ratio | 1.0 (0.4–2.0) | 0.5 (0.2–0.9) | 0.04 |
LGE pattern consistent with EFE | 12 (80) | 3 (60) | 0.37 |
Echo parameters | Â | Â | Â |
LV EDV (ml/m2) | 57 (24–78) | 31 (20–51) | 0.02 |
LV stroke volume (ml/m2) | 28 (12–37) | 24 (12–27) | 0.04 |
Mitral valve diameter z-score | -1.9 (-2.8 – -0.5) | -1.8 (-3.2 – -1.3) | 0.55 |
Aortic valve diameter z-score | -2.1 (-3.9 – -1.4) | -1.8 (-2.1 – -1.4) | 0.74 |
LA pressure (mm Hg) | 13.5 (5–16) | 14 (6–15) | 1.0 |
LV ED pressure (mm Hg) | 12 (8–22) | 16.5 (12–22) | 0.14 |
Biventricular conversion CPB time (min) | 142 (92–260) | 182 (122–239) | 0.34 |
Biventricular conversion LOS (days) | 19 (7–97) | 87.5 (25–150) | 0.20 |