Fig. 3
Relative changes in the PSV, Vmean and EDV 30 min post-block measured in the RA and UA *P < 0.01 when comparing the relative change in the PSV with that in the EDV. ΨP < 0.05 when comparing the relative change in Vmean of the RA with that of the UA. †P < 0.05 when comparing the relative change in the VFR of the RA with that of the UA PSV, peak systolic velocity; EDV, end-diastolic velocity; Vmean, mean velocity; VFR, volumetric flow rate