Table 2.

Murray lung injury score of all patients

Values are presented as mean±standard deviation. The Murray score is a grading system for ARDS which uses 4 pieces of information graded 0-4 to give a severity index for ARDS. The data required are: 1) PaO₂/FiO₂: ≥300=0, 225-299=1, 175-224=2, 100-174=3, <100=4; 2) CXR: normal=0, 1 point per quadrant infiltrated; 3) PEEP: ≤5=0, 6-8=1, 9-11=2, 12-14=3, ≥15=4; 4) Compliance (mL/cmH₂O): ≥80=0, 60-79=1, 40-59=2, 20-39=3, and ≤19=4.

CXR=chest X-ray; PEEP=positive end expiratory pressure; ARDS=acute respiratory distress syndrome.