Table 3.

Mean (SD) uterine/umbilical artery PI indexes measured by transabdominal ultrasound before and after bupivacaine anaesthesia

T6-T4 anaesthetic blockade	UtA-PI				U-PI
	Normotensive	Hypertensive	p	Normotensive	Hypertensive	p
Before	0.80 (0.20)	0.87 (0.16)	0.022	0.81 (0.10)	0.82 (0.12)	0.596
After	0.78 (0.19)	0.73 (0.15)	0.068	0.81 (0.08)	0.83 (0.12)	0.299

SD, standard deviation; PI, pulsatility index; UtA, uterine artery; U, umbilical artery.