Arterial Blood Gases (ABG) basic

Which ABG result indicates metabolic acidosis?

• pH 7.30, PaCO₂ 50 mmHg, HCO₃⁻ 24 mEq/L

• pH 7.50, PaCO₂ 40 mmHg, HCO₃⁻ 28 mEq/L

• pH 7.25, PaCO₂ 38 mmHg, HCO₃⁻ 18 mEq/L

• pH 7.45, PaCO₂ 35 mmHg, HCO₃⁻ 26 mEq/L

An ABG with pH 7.47, PaCO₂ 33 mmHg, and HCO₃⁻ 23 mEq/L indicates:

• Metabolic alkalosis

• Respiratory alkalosis

• metabolic acidosis

• respiratory acidosis

An ABG shows pH 7.32, PaCO₂ 55 mmHg, and HCO₃⁻ 24 mEq/L. What is the interpretation?

• Respiratory acidosis

• Metabolic alkalosis

• Metabolic acidosis

• Respiratory alkalosis

Which ABG finding is most consistent with respiratory alkalosis?

• pH 7.36, PaCO₂ 42 mmHg, HCO₃⁻ 26 mEq/L

• pH 7.48, PaCO₂ 28 mmHg, HCO₃⁻ 22 mEq/L

• pH 7.28, PaCO₂ 55 mmHg, HCO₃⁻ 26 mEq/L

• pH 7.38, PaCO₂ 40 mmHg, HCO₃⁻ 24 mEq/L

A patient has the following ABG: pH 7.50, PaCO₂ 45 mmHg, HCO₃⁻ 34 mEq/L. What is the interpretation?

• Metabolic acidosis

• Metabolic alkalosis

• Respiratory alkalosis

• Respiratory acidosis

What is the normal range for arterial blood pH?

• 6.8 – 7.2

• 7.35 – 7.45

• • 7.50 – 7.60

• 7.20 – 7.30

What is the normal range for arterial PaCO₂ (partial pressure of carbon dioxide)?

• 25 – 35 mmHg

• 45 – 55 mmHg

• 35 – 45 mmHg

• 30 – 40 mmHg

What is the normal range for arterial HCO₃⁻ (bicarbonate)?

• 18 – 22 mEq/L

• 22 – 26 mEq/L

• 28 – 32 mEq/L

• 14 – 18 mEq/L