Table 1 Characteristics of twin-twin transfusion syndrome (TTTS) patients with and without transient donor hydrops (TDH) after laser therapy: data are expressed as mean ± standard deviation, median [inter-quartile range] and frequency (%)
With TDH after laser therapy (n = 24) | Without TDH after laser therapy (n = 118) | p | |
|---|---|---|---|
Maternal age at laser therapy (year-old) | 33.2 ± 5.1 | 31.4 ± 4.2 | 0.077* |
Gestational age at operation (weeks) | 20.7 ± 2.9 | 20.8 ± 2.6 | 0.89* |
Amniotic fluid maximum vertical pocket (cm) of recipient twin | 12.0 [6] | 10.8 [3.69] | 0.51# |
Gestational age at delivery (weeks) | 34.0 [6.0] | 34.4 [5.1] | 0.93# |
Birth weight of liveborn recipients(g) | 2180 [1312] | 2010 [775] | 0.97# |
Birth weight of liveborn donors (g) | 1955 [1330] | 1635 [865] | 0.20# |
Severe Quintero stage (stage III and IV TTTS) | 66.6% (16/24) | 42.4% (50/118) | 0.030※ |
Interval form laser therapy to delivery (days) | 88 [57] | 9 [40] | 0.51# |
Intertwin EFWD (%) | 17.4 ± 12.8 | 24.7 ± 16.9 | 0.046* |
Intertwin BWD (%) | − 0.6 [16.2] (n = 15) | 16.5 [21.5] (n = 71) | < 0.001# |
Donor survival | 79.2% (19/24) | 68.6% (81/118) | 0.34※ |
Recipient survival | 75.0% (18/24) | 78.8% (93/118) | 0.79※ |
Two fetuses survival rate | 62.5% (15/24) | 60.2% (71/118) | 0.82※ |
Total survival | 77.1% (37/48) | 72.9% (172/236) | 0.60※ |