Table 3 Primary and secondary endpoints.

From: Adverse fetal/neonatal and obstetric outcomes in pregnancies with both maternal and fetal heart disease

Primary and secondary endpoints

 

Total (n = 1104)

Maternal HD (n = 1011)

Combined MF-HD (n = 93)

P

Primary endpoints: adverse fetal and neonatal events

Fetal events (total)

287 (26)

252 (24.9)

35 (37.6)

0.008

 Fetal or neonatal death (up to 28 days)

5 (0.5)

4 (0.4)

1 (1.1)

0.370

 Preterm birth (<37 weeks’)

131 (11.9)

110 (10.9)

21 (22.6)

0.001

 Extreme preterm birth (<32 weeks’)

22 (2.0)

20 (2.0)

2 (2.2)

0.909

 Gestational age at deliverya

39 (38–40)

39 (38–40)

38 (37.5–40)

0.220

 SGA (less than 10th centile)

180 (16.3)

162 (16)

18 (19.4)

0.406

Primary endpoint: obstetric events

Preeclampsia

51 (4.6)

47 (4.6)

4 (4.3)

0.879

Secondary endpoints: adverse fetal and neonatal events

 Birth weightsa

3200 (2840–3546)

3200 (2855–3545)

3200 (2600–3550)

0.205

 RDS

33 (3.0)

27 (2.7)

6 (6.5)

0.047

 IVH

3 (0.5)

3 (0.5)

0

1.000

 Other congenital fetal abnormalitiesb

32 (2.9)

25 (2.5)

7 (7.5)

0.008

 NICU

160 (14.5)

130 (12.9)

30 (32.3)

<0.001

Secondary endpoints: obstetric events

 Obstetric death

0

  

1.000

 Post-partum hemorrhage

47 (4.3)

47 (4.6)

0 (0.0)

0.997

  1. RDS respiratory distress syndrome, IVH intraventricular hemorrhage, SGA small for gestational age, NICU neonatal intensive care unit stay. P-values (bold indicate significance <0.05).
  2. aMedian (Interquartile range 25–75).
  3. bCongenital non-cardiac fetal abnormalities.