Table 1.
The characteristics of cases that underwent selective termination with RFA before and after 20 weeks of gestational age
| Characteristics | Total | GA at RFA ≤ 20w | GA at RFA>20w |
|---|---|---|---|
| Number of pregnancies(n,%) | 306 | 134 (43.79) | 172 (56.21) |
| Maternal age (years) | 32.71 ± 6.07 | 31 (28–34.25) | 30 (27–33) |
| Median gestational weeks at RFA | 20.57 (17.82–23.29) | 17.43 (16.39–18.78) | 23 (21.18–24.29) |
| Gestational age at delivery (weeks) | 36.23 ± 3.23 | 35.93 (28–38) | 36 (28.54–38.14) |
| chorionicity (n,%) | |||
| MCMA twin | 2 (0.65) | 0 (0) | 2 (0.65) |
| MCDA twin | 266 (86.93) | 99 (32.35) | 167 (54.58) |
| MCTA triplet | 8 (2.61) | 7 (2.29) | 1 (0.33) |
| DCTA triplet | 30 (9.80) | 28 (9.15) | 2 (0.65) |
| Indication for RFA(n,%) | |||
| TTTS | 91 (29.74) | 28 (9.15) | 63 (20.59) |
| sFGR | 83 (27.12) | 27 (8.82) | 56 (18.30) |
| Discordant Anomaly | 78 (25.49) | 37 (12.09) | 41 (13.40) |
| MFPR | 32 (10.46) | 28 (9.15) | 4 (1.31) |
| TRAPS | 19 (6.21) | 13 (4.25) | 6 (1.96) |
| TAPS | 3 (0.98) | 1 (0.33) | 2 (0.65) |
MCMA monochorionic monoamniotic; MCDA monochorionic diamniotic; MCTA monochorionic triamniotic; DCTA dichorionic triamniotic; TTTS twin-to-twin transfusion syndrome; sFGR selective fetal growth restriction; MFPR multifetal pregnancy reduction; TRAPS twin reversed arterial perfusion sequence; TAPS twin anemia-polycythemia sequence
Seven cases was lost of follow-up