### Description

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

= (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