Pulmonary edema grading

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One pulmonary edema grading based on chest radiograph appearances and pulmonary capillary wedge pressure (PCWP) is as follows:

  • grade 0: normal chest radiograph, PCWP 8-12 mmHg
  • grade 1: shows evidence of upper lobe diversion on a chest radiograph, PCWP 13-18 mmHg
  • grade 2: shows interstitial edema on a chest radiograph, PCWP 19-25 mmHg
  • grade 3: shows alveolar edema on a chest radiograph, PCWP >25 mmHg