Prediction of non-reassuring fetal status and umbilical artery acidosis by the maternal characteristic and ultrasound prior to induction of labor

Table 1 General characteristics of the subjects

	Normal fetal heart rate pattern	Non-reassuring fetal status	p
Number	340	44
Age	33 (19–45)	32 (23–42)	0.81
BMI (kg/m²)	28.0 (19.1–38.6)	26.5 (21.9–38.2)	0.022*
Nulliparity (%)	49.1% (167)	84.1%(37)	< 0.001*
Gestational age	39.6 (37–42)	40.2 (37.1–41.4)	0.031*
Bishop score < 6	46.5% (158)	65.9% (29)	0.015*
UA PI	0.77 ± 0.14	0.81 ± 0.14	0.18
MCA PI	1.38 ± 0.35	1.25 ± 0.31	0.02*
CPR < p10^th	7.9% (27)	25% (11)	< 0.001*
EFW < p10^th	7.1% (24)	22.7%(10)	0.001*
Cervical length (cm)	2.4 ± 0.9	2.5 ± 0.9	0.94
Birth weight (g)	3290 ± 430	3104 ± 500	0.007*
Apgar < 7 at 5 min	0	4.5% (2)	0.013*

BMI Body mass index, UA PI Umbilical artery pulsatility index, MCA PI Middle cerebral artery pulsatility index, CPR Cerebroplacental ratio, EFW Estimated fetal weight
* indicates p<0.05.

ISSN: 1471-2393