Table 2 Comparison of parameters according to operation type at the second and third trimester
From: Fetal cardiac parameters for predicting postnatal operation type of fetuses with tetralogy of Fallot
Parameter | Study population (N = 100) | Single-stage surgery (N = 90) | Multi-stage surgery (N = 10) | P-value |
|---|---|---|---|---|
At the second trimester | ||||
PVA z-score | −3.3 (−6.4 ─ 2.2) | −3.1 (−5.8 ─ 2.2) | −4.1 (− 6.4 ─ -1.8) | 0.014 |
RPA z-score | −0.4 (− 3.1 ─ 1.8) | −0.3 (− 3.1 ─ 1.8) | −1.5 (− 2.0 ─ 0.3) | 0.029 |
AVA z-score | 0.5 (−1.8 ─ 3.3) | 0.5 (− 1.8 ─ 3.3) | 0.3 (− 1.7 ─ 3.2) | 0.625 |
PV-PSV (m/s) | 1.1 (0.7 ─ 1.6) | 1.1 (0.7 ─ 1.6) | 1.3 (1.2 ─ 1.6) | 0.001 |
PVA/AVA | 0.77 (0.41 ─ 1.39) | 0.78 (0.50 ─ 1.39) | 0.67 (0.41 ─ 1.00) | 0.152 |
RPA/DAo | 0.73 (0.45 ─ 1.12) | 0.74 (0.45 ─ 1.12) | 0.57 (0.52 ─ 0.81) | 0.004 |
At the third trimester | ||||
PVA z-score | −3.2 (−6.6 ─ -0.6) | − 3.0 (−5.4 ─ -0.6) | −5.0 (− 6.6 ─ -2.5) | < 0.001 |
RPA z-score | − 0.5 (− 2.6 ─ 1.2) | − 0.4 (− 2.6 ─ 1.2) | − 0.9 (− 2.2 ─ 0) | 0.022 |
AVA z-score | 1.0 (− 1.2 ─ 3.2) | 1.0 (− 1.2 ─ 3.1) | 0.9 (− 0.2 ─ 3.2) | 0.732 |
PV-PSV (m/s) | 1.2 (0.8 ─ 2.8) | 1.2 (0.8 ─ 2.8) | 1.5 (1.2 ─ 1.8) | 0.002 |
PVA/AVA | 0.76 (0.48 ─ 0.14) | 0.77 (0.49 ─ 1.14) | 0.60 (0.48 ─ 0.81) | < 0.001 |
RPA/DAo | 0.72 (0.47 ─ 0.98) | 0.72 (0.47 ─ 0.98) | 0.66 (0.51 ─ 0.79) | 0.058 |