Arterial Blood Gas Analysis · Pathology

A mixed acid-base disorder is suspected when:

  1. pH is normal but compensation is absent
  2. Actual compensation differs from expected
  3. PaO2 is consistently elevated above normal
  4. Hemoglobin remains below the normal range
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Correct answer: Actual compensation differs from expected

If the observed compensation differs from predicted compensation, a mixed acid-base disorder is likely. This indicates more than one primary disturbance.

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