General Medicine General ff38bdb0 When evaluating an ABG from a client with a subdural hematoma, the nurse notes the PaCO2 is 30 mm Hg. Which of the following responses best describes this result? A Appropriate; lowering carbon dioxide (CO2) reduces intracranial pressure (ICP). B Emergent; the client is poorly oxygenated. C Normal D Significant; the client has alveolar hypoventilation.