Table 1

Melbourne Group Scale (MGS)

VariablesPercentage of PPC patients positive for each variable
Chest x-ray atelectasis /infiltration91%
Purulent sputum85%
Physician diagnosis of pneumonia/chest infection82%
Temperature >38°C79%
Oxygen saturation <90% on air59%
Positive signs on sputum microbiology38%
White cell count >11.2 units32%
Readmission/prolonged stay ITU/HDU29%
  • 4 of 8 factors indicate PPC.

  • HDU, high dependency unit; ITU, intensive therapy unit; PPC, postoperative pulmonary complications.