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Table 2 RFR and flow values in the healthy and RAS patients

From: The renal blood flow reserve in healthy humans and patients with atherosclerotic renovascular disease measured by positron emission tomography using [15O]H2O

 

N

Predilatation

  
 

Basal flow (ml/min/g)

Stress flow (ml/min/g)

RFR (%)

Healthy

8

1.8 (0.3)

2.2 (0.6)

22 (32)

RAS unilateral contralateral kidneys

7

1.8 (0.7)

2.1 (0.6)

21 (27)

RAS unilateral, stenosed kidneys

7

1.5 (0.7)

1.7 (0.7)

15 (22)

RAS bilateral

9

1.4 (0.3)

1.7 (0.4)

27 (43)

Diabetics, stenosed kidneys

13

1.3 (0.4)

1.6 (0.5)

24 (41)

Non-diabetics, stenosed kidneys

9

1.6 (0.5)

1.8 (0.5)

14 (20)

  1. Values are expressed as mean (SD)
  2. N number of patients in the subgroups of healthy and bilateral, RAS number of the kidneys in other groups, RFR renal flow reserve, calculated as [(stress blood flow-basal blood flow)/basal blood flow] × 100%