The physiologic subscore is based a number of physiologic and biochemical parameters, with points awarded according to the severity of any abnormality present.
Scoring:
(1) The points are assigned for the most abnormal (worst) value in a 24 hour period.
(2) If a value is not available, then score as if normal.
Pulse in beats/minute |
Points |
<= 39 |
8 |
40 - 49 |
5 |
50 - 99 |
0 |
100 - 109 |
1 |
110 - 119 |
5 |
120 - 139 |
7 |
140 - 154 |
13 |
>= 155 |
17 |
Mean blood pressure |
Points |
<= 39 |
23 |
40 - 59 |
15 |
60 - 69 |
7 |
70 - 79 |
6 |
80 - 99 |
0 |
100 - 119 |
4 |
120- 129 |
7 |
130 - 139 |
9 |
>= 140 |
10 |
where:
• mean blood pressure = ((systolic blood pressure) + (2 * (diastolic blood pressure))) / 3
temperature in °C |
Points |
<= 32.9 |
20 |
33 - 33.4 |
16 |
33.5 - 33.9 |
13 |
34 - 34.9 |
8 |
35 - 35.9 |
2 |
36 - 39.9 |
0 |
>= 40 |
4 |
respiratory rate in breaths per minute |
Points |
<= 5 |
17 |
6 - 11 |
8 if not on mechanical ventilation; 0 if on mechanical ventilation |
12- 13 |
7 (0 points if rate 12 and patient on mechanical ventilation) |
14 - 24 |
0 |
25 - 34 |
6 |
35 - 39 |
9 |
40 - 49 |
11 |
>= 50 |
18 |
PaO2 in mm Hg |
Points |
<= 49 |
15 |
50 - 69 |
5 |
70 - 79 |
2 |
>= 80 |
0 |
where:
• points for PaO2 not given for intubated patients with FIO2 >= 0.5 (see A-a DO2)
A-a DO2 |
Points |
< 100 |
0 |
100 - 249 |
7 |
250 - 349 |
9 |
350 - 499 |
11 |
>= 500 |
14 |
where:
• A-a DO2 only used for intubated patients with FIO2 >= 0.5
Hematocrit as percent |
Points |
<= 40.9 |
3 |
41 - 49 |
0 |
>= 50 |
3 |
WBC per microliter |
Points |
< 1000 |
19 |
1000 - 2900 |
5 |
3000 - 19900 |
0 |
20000 - 24999 |
1 |
>= 25000 |
5 |
Creatinine in mg/dL, without acute renal failure |
Points |
<= 0.4 mg/dL |
3 |
0.5 - 1.4 |
0 |
1.5 - 1.94 |
4 |
>= 1.95 |
7 |
Creatinine in mg/dL, with acute renal failure |
Specialty: Critical Care, Emergency Medicine |