Deck 4: Arterial Blood Gas Assessments

Question 1

Study #2
A 180-pound, 79-year-old man with documented CO₂ retention secondary to severe emphysema has been in the intensive care unit for 2 days with a diagnosis of acute bacterial pneumonia. The patient has been stable for the past 20 hours with the following arterial blood gas values and vital signs on a 28% Venturi mask:

Answer 1

Chronic ventilatory failure with moderate hypoxemia

Question 2

Match each blood gas value(s) that best fits the blood gas classification. Items may be used once, more than once, or not at all.
a.Acute alveolar hyperventilation
b.Acute ventilatory failure
c.Chronic ventilatory failure
d.Metabolic acidosis
e.Metabolic alkalosis

Answer 2

1. A
2. C
3. E
4. B
5. D
6. A
7. E
8. D
9. E
10. D

Question 3

Study #1
A 46-year old man without previous illness enters the coronary care unit with an electrocardiogram (ECG) diagnosis of "inferior wall infarct" and severe chest pain. He had received morphine in the emergency room. The cardiac monitor showed numerous premature ventricular contractions (PVCs).
Room Air Blood Gases:
Blood Gas Interpretation: (1 pt)

Answer 3

Acute alveolar hyperventilation with mild hypoxemia