Table 1 Clinical characteristics of the study population (n = 32), intrauterine transfusions (n = 70) and pregnancy outcomes

 Age (years)

31.2 ± 5.3

 BMI (kg/m²)

24.1 ± 3.3

 Nulliparous

4 (12.5)

 Immunization^a

27 (84.4)

 Number of IUTs per fetus

2.2 ± 1.7

 Intrahepatic

41 (58.6)

 Cord insertion in placenta

29 (41.4)

 Mean GA at IUT (weeks)

28.6 ± 4.7

 Hemoglobin before IUT (g/L)

88.6 ± 28.7

 Hemoglobin after IUT (g/L)

141.7 ± 23.9

 None

20 (29.0)

 Mild

23 (33.3)

 Moderate

9 (13.0)

 Severe

17 (24.6)

 Infused volume (mL)

47.1 ± 23.9

 GA at delivery (weeks)

35.7 ± 1.4

 Pre-term delivery < 37 weeks

28 (87.5)

 Normal vaginal delivery

11 (34.4)

 Elective cesarean section

8 (25.0)

 Emergency cesarean section

13 (40.6)

 Birth weight (g)

2793 ± 443

 Female babies

15 (46.9)

 Cord arterial pH (n = 13)

7.27 ± 0.10

 5-min Apgar score < 7

2 (6.3)