Table 3: Fournier gangrene severity index.

Variable

High abnormal values

Normal

Low abnormal values

Score

+4

+3

+2

+1

0

+1

+2

+3

+4

Temperature (oC)

> 41

39-40.9

-

38.5-39

36-38.4

34-35.9

32-33.9

30-31.9

< 29

Heart rate

> 180

140-179

110-139

-

70-109

-

55-69

40-54

< 39

Respiratory

frequency

> 50

35-49

-

25-34

12-24

10-11

6-9

-

< 5

Serum sodium

(mmol/l)

> 180

160-170

266-159

350-354

130-149

-

120-129

111-119

< 110

Serum potassium

(mmol/l)

> 7

6-6.9

-

5.5-5.9

3.5-5.4

3-3.4

2.5-2.9

-

< 3.5

Serum creatinine

(mg/100/ml × 2 for

acute renal failure)

> 3.5

2-3.4

1.5-1.9

-

0.6-1.4

-

< 0.6

-

-

Hematocrit

> 60

-

50-59.9

46-49.9

30-45.9

-

20-29.9

-

< 20

Leukocytes

(total/mm3 × 1,000)

> 40

-

20-39.9

15-19.9

3-14.9

-

1-2.9

-

< 1

Serum bicarbonate

(venous, mmol/l)

> 53

41-51.9

-

32-40.9

22-31.9

-

18-21.9

15-17.9

< 15

Source: Laor E et al.27