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Table 2 Obstetric and neonatal outcome of the OHSS, fresh transfer and frozen transfer groups

From: Obstetric outcomes following ovarian hyperstimulation syndrome in IVF – a comparison with uncomplicated fresh and frozen transfer cycles

 

OHSS group

n=44

Fresh transfer group

n=220

Frozen transfer group

n=220

P

Gestational age at delivery, weeks

38.6 ± 1.9

38.7 ± 2.0

38.9 ± 1.7

0.43

Preterm delivery

6 (13.6%)

17 (7.7%)

18 (8.2%)

0.42

Preeclampsia

1 (2.3%)

10 (4.5%)

9 (4.1%)

0.78

Gestational hypertension

0

3 (1.4%)

8 (3.6%)

0.15

Gestational diabetes

3 (6.8%)

11 (5.0%)

22 (10.0%)

0.13

Placenta previa

0

4 (1.8%)

2 (0.9%)

0.50

Placental abruption

3 (6.8%)a,b

3 (1.4%)a

2 (0.9%)b

0.02

Instrumental delivery

3 (6.8%)

15 (6.8%)

20 (9.1%)

0.65

Cesarean delivery

10 (22.7%)

47 (21.4%)

66 (30.0%)

0.10

Blood transfusion, ante / postpartum

1 (2.3%)

3 (1.4%)

8 (3.6%)

0.30

Birth weight, grams

3017 ± 483a

3057 ± 545b

3213 ± 542a,b

0.004

Small for gestational age

5 (11.3%)

30 (13.6%)

17 (7.7%)

0.13

  1. Data presented as mean ± SD or n (%) as appropriate.
  2. SD standard deviation, n number, Premature delivery – under 37 weeks