Table 2.

Results

	Before anaesthesia n=40	During lumbar epidural anaesthesia n=40	p*
Area under the curve (μVsec)	0.042 (0.010–0.1244)	0.2461 (0.0566–0.5490)	0.0001
Amplitude (μV)	0.084 (0.028–0.213)	0.542 (0.147–0.963)	0.0001
Pulse transit time (sec)	0.3000 (0.2350–0.3458)	0.3050 (0.2667–0.3600)	0.007

Data are presented as median (range).

^*Wilcoxon’s pair test.