Table 2.

Pre-procedural renal Doppler ultrasound

Variable	N = 95 absolute count (%) or median (25–75 percentile) or mean ± SD
Abdominal Ao Vmax (m/s)	0.59 ± 0.13
PSV—renal artery (m/s)	0.64 ± 0.12
EDV— renal artery (m/s)	0.26 (0.23; 0.29)
RAR	1.06 (0.91; 1.23)
PSV—intra-renal (m/s)	0.42 ± 0.096
EDV—intra-renal (m/s)	0.16 ± 0.05
Renal resistive index	0.63 ± 0.07
Renal pulsatility index	1.38 ± 0.22
Renal AT (m/s)	59.0 (51.0; 70.0)
Renal AI (m/s2)	4.1 (3.6; 4.6)

PSV peak systolic velocity, EDV end-diastolic velocity, AT acceleration time, AI acceleration index, Ao aorta, V _max maximal velocity, RAR renal-aortic flow velocity index