Bedside Tool of Mehta et al for Identifying a Patient at Risk for Postoperative Renal Failure and Dialysis Following Cardiac Surgery

last serum creatinine in mg/dL

MIN(40, 10 * (serum creatinine))

age in years

< 55 years of age

0

55 to 59 years

1

60 to 64 years

2

65 to 69 years

3

70 to 74 years

4

75 to 79 years

5

80 to 84 years

6

85 to 89 years

7

90 to 94 years

8

95 to 99 years

9

>= 100 years

10

type of surgery

CABG only

0

aortic valve only

2

mitral valve only

4

CABG and aortic valve

5

CABG and mitral valve

7

diabetes

none

0

oral control

2

insulin required

5

recent MI

none

0

within past 3 weeks

3

race

White

0

non-White

2

chronic lung disease

absent

0

present

3

previous cardiac surgery

no

0

yes

3

NYHA class

I, II or III

0

IV

3

cardiogenic shock

absent

0

present

7

< 12

0.2%

12 to 22

(0.01205 * ((score)^2)) - (0.2912 * (score)) + 2.077

22 to 42

(0.03109 * ((score)^2)) - (1.108 * (score)) + 10.78

43

19%

44 to 68

(0.05091 * ((score)^2)) - (3.157 * (score)) + 58.85