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Table 1 Baseline characteristics of the study population and pregnancy outcomes (n = 134)

From: Reference ranges of fetal superior vena cava blood flow velocities and pulsatility index in the second half of pregnancy: a longitudinal study

Variable

Median (range), Mean (SD) or n%

Maternal age (years)

30 (19–39)

Maternal body-mass index (Kg/cm2)

23.90 (3.80)

Nullipara

61 (45.5%)

Gestational age at birth (weeks)

40 (33–42)

Preterm delivery

  < 37 weeks

4 (3.0%)

  < 34 weeks

1 (0.7%)

Pre-eclampsia

4 (3.0%)

Gestational diabetes

1 (0.7%)

Induction of labor

17 (12.7%)

Mode of delivery

 Normal vaginal delivery

116 (86.6%)

 Operative vaginal delivery

1 (0.7%)

 Cesarean section

17 (12.7%)

Birthweight (g)

3600 (2251–4636)

Sex (male/female)

74 (55) /60 (45)

Apgar score < 7 at 1 min

6 (2.2%)

Apgar score < 7 at 5 min

2 (1.4%)

Admission to neonatal inensive care

5 (3.7%)

  1. Data are presented as median (range). mean (SD) or n (%) as appropriate