Table 5 Estimated coefficients and correspondent 95% CI of the regression model used to predict the pulsatility index before and after spinal anaesthesia within each artery (UtA or U), adjusted according to the hypertensive status

Intercept

0.773

(0.757, 0.789)*

After (vs Before) anaesthetic blockade

-0.016

(-0.030, -0.002)*

U (vs UtA)

0.034

(0.012, 0.056)*

Hypertensive (vs Non-Hypertensive) women

0.096

(0.053, 0.139)*

U x Hypertensive women

-0.081

(-0.140, -0.022)*

U x After anaesthetic blockade

0.019

(0.001, 0.037)*

After anaesthetic blockade x Hypertensive women

-0.145

(-0.182, -0.108)*

After anaesthetic blockade x Hypertensive women x U

0.153

(0.104, 0.202)*