Ellis et al reported a simple clinical tool for predicting clinically significant chronic kidney disease (CKD) after nephrectomy. The authors are from multiple institutions in Australia.
Patient selection: preoperative eGFR >= 60 mL per kg per square meter
Outcome: eGFR < 45 mL per min per 1.73 square meter at 12 months after surgery
Parameters:
(1) age in years
(2) diabetes mellitus
(3) preoperative eGFR in mL per kg per square meter
(4) type of nephrectomy
Parameters
Finding
Points
age in years
< 65 years
0
>= 65 years
1
diabetes
no
0
yes
1
preop eGFR
>= 90
0
80 to 89
3
70 to 79
4
60 to 69
5
type of nephrectomy
partial
0
radical/total
3
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 10
Score
Risk of Postoperative CKD
Percent Risk
0 to 3
negligible
< 1%
4 to 6
low
6%
7 or 8
moderate
23%
9 or 10
high
51%
Performance:
• The area under the ROC curve was 0.84 in the derivation cohort.
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