Renal Function and Ultrasound Imaging in Elderly Subjects
Table 1
Demographic and clinical characteristics.
Whole population ( = 72 patients)
CKD ( = 41 patients)
Non-CKD ( = 31 patients)
Age, years
80 ± 7
82 ± 6
77 ± 7
0.01
Male sex, %
44
42
48
0.56
Weight, Kg
64.9 ± 14.5
61.5 ± 13.2
69.4 ± 15.1
0.09
Height, m
1.58 ± 0.11
1.57 ± 0.11
1.59 ± 0.10
0.42
BMI, Kg/m2
25.9 ± 5.6
24.9 ± 5.8
27.3 ± 5.2
0.26
BSA, m2
1.70 ± 0.22
1.65 ± 0.21
1.77 ± 0.22
0.08
Diabetes, %
29
22
39
0.12
Hypertension, %
81
76
87
0.22
Serum creatinine, mg/dL
0.98 ± 0.42
1.09 ± 0.47
0.84 ± 0.27
0.01
24 h-CrCl, mL/min
59 ± 27
40 ± 14
84 ± 18
<0.001
Cockcroft-Gault, mL/min
56 ± 20
46 ± 16
70 ± 17
<0.001
MDRD, mL/min
77 ± 29
68 ± 27
90 ± 28
0.001
CKD-EPI, mL/min
68 ± 20
60 ± 19
78 ± 29
0.001
l-diameter, mm
104 ± 16
100 ± 16
110 ± 14
0.003
t-diameter, mm
47 ± 5
46 ± 5
48 ± 5
0.04
t-volume, mL
133 ± 37
117 ± 33
154 ± 31
<0.001
p-volume, mL
95 ± 27
84 ± 26
109 ± 21
<0.001
mPT, mm
6.1 ± 0.8
6.6 ± 0.6
5.8 ± 0.8
<0.001
ASMS, cm2
16 ± 4
14 ± 4
18 ± 4
<0.001
ASMT, cm2
42 ± 9
38 ± 8
47 ± 7
<0.001
ASMP, cm2
26 ± 6
24 ± 6
29 ± 4
<0.001
RI, %
72.8 ± 5.9
73.0 ± 6.4
72.6 ± 5.1
0.68
t-volume/BSA, mL*m2/Kg
79 ± 20
71 ± 18
88 ± 17
<0.001
t-volume/RI, mL
184 ± 49
162 ± 45
213 ± 39
<0.001
t-volume/BSA/RI, mL*m2/Kg
108 ± 28
98 ± 27
122 ± 25
<0.001
BSA, body surface area; ASMS, mean kidney sinus section area; ASMT, mean total kidney section area; ASMP, mean kidney parenchymal section area; l-diameter, mean kidney longitudinal diameter; t-diameter, mean kidney transverse diameter; t-volume, mean total kidney volume; p-volume, mean kidney parenchymal volume; mPT, mean parenchymal thickness; RI, mean resistance index.
