Multiple Organ Dysfunction Score is intended to offer an objective measure for the severity of multiple organ disorders. Six key organ systems commonly affected in systemic disorders are assessed. A cumulative score correlates with mortality rate seen for the seriously ill patient.
|
Organ System |
Measure |
Finding |
Score |
|
respiratory |
PO2/FIO2 ratio |
> 300 |
0 |
|
|
|
226-300 |
1 |
|
|
|
151-225 |
2 |
|
|
|
76-150 |
3 |
|
|
|
<= 75 |
4 |
|
renal |
serum creatinine |
<= 100 µmol/L (<=1.1 mg/dL) |
0 |
|
|
|
101-200 µmol/L (1.1-2.3 mg/dL) |
1 |
|
|
|
201-350 µmol/L (2.3-4.0 mg/dL) |
2 |
|
|
|
351-500 µmol/L (4.0-5.7 mg/dL) |
3 |
|
|
|
> 500 µmol/L (>5.7 mg/dL) |
4 |
|
hepatic |
serum bilirubin |
<= 20 µmol/L (<= 1.2 mg/dL) |
0 |
|
|
|
21-60 µmol/L (1.2-3.5 mg/dL) |
1 |
|
|
|
61-120 µmol/L (3.5-7.0 mg/dL) |
2 |
|
|
|
121-240 µmol/L (7.0-14.0 mg/dL) |
3 |
|
|
|
> 240 µmol/L (> 14.0 mg/dL) |
4 |
|
cardiovascular |
pressure adjusted heart rate (see below) |
<= 10.0 |
0 |
|
|
|
10.1-15.0 |
1 |
|
|
|
15.1-20.0 |
2 |
|
|
|
20.1-30.0 |
3 |
|
|
|
> 30.0 |
4 |
|
hematologic |
platelet count |
> 120,000 /µL |
0 |
|
|
|
81,000-120,000 /µL |
1 |
|
|
|
51,000-80,000 /µL |
2 |
|
|
|
21,000-50,000 /µL |
3 |
|
|
|
<= 20,000 /µL |
4 |
|
neurologic |
Glasgow coma score |
15 |
0 |
|
|
|
13-14 |
1 |
|
|
|
10-12 |
2 |
|
|
|
7-9 |
3 |
|
|
|
<=6 |
4 |
where:
• conversion factor for creatinine µmol/L to mg/dL is 0.011312
• conversion factor for bilirubin µmol/L to mg/dL is 0.05848
Cardiovascular Calculations
pressure adjusted heart rate =
= (heart rate in beats per minute) * (right atrial pressure in mm Hg) / (mean arterial pressure in mm Hg)
mean arterial pressure =
= ((systolic arterial pressure in mm Hg) + (2 * (diastolic arterial pressure in mm Hg))) / 3
Calculation and Interpretation
Multiple Organ Dysfunction Score =
= (respiratory points) + (renal points) + (hepatic points) + (cardiovascular points) + (hematologic points) + (neurologic points)
Interpretation:
• minimum score: 0
• maximum score: 24
|
Score |
ICU Mortality |
Hospital Mortality |
|
0 |
0% |
0% |
|
1-4 |
SpecialtyInfoSpecialty: Critical Care, Emergency Medicine |
