Arterial Blood Gas Quiz

What is the normal pH range of arterial blood gas (ABG)?

• 6.8–7.0

• 7.0–7.2

• 7.35–7.45

• 7.5–7.8

What is the normal range for PaCO2 in arterial blood gas?

• 20–30 mmHg

• 35–45 mmHg

• 50–60 mmHg

• 70–80 mmHg

What condition is indicated by a pH of 7.28 and an elevated PaCO2?

• Metabolic alkalosis

• Metabolic acidosis

• Respiratory acidosis

• Respiratory alkalosis

Which of the following is NOT a cause of respiratory acidosis?

• Hypoventilation

• COPD exacerbation

• Anxiety or panic attacks

• Neuromuscular disorders

What is the primary compensatory mechanism for metabolic acidosis?

• Hyperventilation

• Hypoventilation

• Kidney retention of bicarbonate

• Kidney excretion of hydrogen ions

Which value indicates metabolic alkalosis?

• pH: 7.50, HCO3: 28 mEq/L

• pH: 7.30, HCO3: 18 mEq/L

• pH: 7.40, HCO3: 22 mEq/L

• pH: 7.25, HCO3: 10 mEq/L

A high anion gap metabolic acidosis can be caused by:

• Prolonged vomiting

• Diarrhea

• Diabetic ketoacidosis

• Hypokalemia

What is the normal range for base excess?

• -5 to +5 mEq/L

• -2 to +2 mEq/L

• -10 to +10 mEq/L

• -3 to +3 mEq/L

What does a PaO2 level of 60 mmHg indicate?

• Normal oxygenation

• Hyperoxemia

• Hypoxemia

• Respiratory alkalosis

Which formula is used to calculate the anion gap?

• Na+ + Cl− - HCO3−

• Na+ − (Cl− + HCO3−)

• Na+ − HCO3− − Cl−

• HCO3− − Na+ + Cl−