A respiratory therapist observes the following data while assessing a patient in the cardiac ICU. 

CVP = 10 mm Hg

PCWP = 15 mm Hg

QT = 11 L/min

Urine output 100 mL/h

Based on this data, what should the respiratory therapist suspect is wrong with the patient?

  1. Metabolic acidosis
  2. Hypervolemia
  3. Hypovolemia
  4. These values are within normal limits

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3. Hypervolemia


The CVP, PCWP, QT (cardiac output), and urine output are greater than normal, suggesting hypervolemia (fluid overload). Normal CVP is 2-6 mm Hg. Normal PCWP is 5-10 mm Hg. Normal urine output is about 40 ml/hour or 1 Liter/day.

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