表 1. Baseline data of the pregnant women.

产妇基线资料

Characteristic	Group△	Dose of NE/(μg/[kg·min]), n=20					P
		0.025	0.05	0.075	0.10	0.125
BMI: Body mass index; SBP: Systolic blood pressure; HR: Heart rate. △1: Singleton pregnancy; 2: Twin pregnancy. *P<0.05, vs. group 1 at the same dose level. 1 mmHg=0.133 kPa.
Age/yr.	1	31.0±3.1	29.0±3.1	30.9±3.5	30.8±2.7	31.0±2.5	0.38
	2	32.0±2.1	30.6±3.5	32.8±3.4	31.8±3.6	33.0±3.2	0.16
Height/cm	1	161.0±4.6	159.4±3.9	159.4±3.7	159.8±3.1	161.7±5.2	0.23
	2	159.0±4.4	160.0±5.5	160.0±4.6	160.3±6.5	161.1±5.7	0.86
Body mass/kg	1	64.1±7.5	68.3±6.9	68.1±5.5	65.1±6.2	66.8±6.6	0.19
	2	70.4±7.2*	72.5±10.3	68.4±7.7	69.6±6.9*	71.3±5.7*	0.68
BMI/(kg/cm2)	1	24.7±2.7	26.9±2.3	26.8±1.7	25.8±2.7	25.6±2.4	0.27
	2	27.7±2.6*	28.4±3.3	26.8±2.9	27.1±2.3	27.5±2.3*	0.37
Gestational age/week	1	39.3±0.6	39.2±0.7	39.2±0.8	39.3±0.7	39.3±0.5	0.96
	2	36.6±1.0*	36.6±0.8*	36.3±1.5*	36.9±0.6*	36.4±1.5*	0.52
Induction-delivery interval/min	1	22.1±4.2	22.3±6.1	22.1±5.2	20.4±3.3	20.9±4.1	0.63
	2	22.3±4.3	22.4±4.7	22.6±5.5	21.7±3.7	23.4±4.7	0.86
Baseline SBP/mmHg	1	114.0±9.8	118.4±7.5	114.3±7.3	116.0±7.8	116.9±7.5	0.40
	2	119.7±8.3	122.2±7.2	120.7±8.5	118.2±8.9	119.6±8.1	0.64
Baseline HR/min−1	1	85.2±7.3	84.3±7.3	87.0±5.4	83.6±8.2	85.0±9.6	0.88
	2	83.4±9.0	86.8±8.9	90.3±11.9	84.3±11.0	85.1±14.7	0.34