Arterial blood gas interpretation worksheet with answers

Free printable Arterial blood gas interpretation worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
pH7.357.457.53PaCO₂mmHg354521HCO₃⁻mmol/L222617respiratorymetabolicacidosisalkalosis

A practice arterial blood gas shows pH 7.53, PaCO₂ 21 mmHg (2.8 kPa) and HCO₃⁻ 17 mmol/L. Which primary disorder is it? Click the cell in the grid.

pH 7.53PaCO₂ 21 mmHg (2.8 kPa)HCO₃⁻ 17 mmol/L
  1. 1respiratory acidosis
  2. 2metabolic acidosis
  3. 3respiratory alkalosis
  4. 4metabolic alkalosis
2.Easy

A practice blood gas shows PaO₂ 86 mmHg (11.5 kPa) while the inspired oxygen is 30%. Calculate the ratio P/F = PaO₂/FiO₂ in mmHg.

PaO₂ 86 mmHg (11.5 kPa)FiO₂ 30%
P/F = mmHg
3.Medium
pH7.357.457.62PaCO₂mmHg354537HCO₃⁻mmol/L222637uncompensatedpartially compensatedfully compensated

A practice arterial blood gas shows pH 7.62, PaCO₂ 37 mmHg (4.9 kPa) and HCO₃⁻ 37 mmol/L. The primary disorder is metabolic alkalosis. How far is it compensated? Click your answer.

pH 7.62PaCO₂ 37 mmHg (4.9 kPa)HCO₃⁻ 37 mmol/L
  1. 1uncompensated
  2. 2partially compensated
  3. 3fully compensated
4.Medium
pH7.357.457.52PaCO₂mmHg354547HCO₃⁻mmol/L222637uncompensatedpartially compensatedfully compensated

A practice arterial blood gas shows pH 7.52, PaCO₂ 47 mmHg (6.3 kPa) and HCO₃⁻ 37 mmol/L. The primary disorder is metabolic alkalosis. How far is it compensated? Click your answer.

pH 7.52PaCO₂ 47 mmHg (6.3 kPa)HCO₃⁻ 37 mmol/L
  1. 1uncompensated
  2. 2partially compensated
  3. 3fully compensated
5.Hard

A practice gas shows a metabolic alkalosis with HCO₃⁻ 41 mmol/L. Use expected PaCO₂ = 0.7·HCO₃⁻ + 21 to find the expected PaCO₂.

HCO₃⁻ 41 mmol/L
PaCO₂ = mmHg
6.Hard

A practice gas shows a metabolic alkalosis with HCO₃⁻ 30 mmol/L. Use expected PaCO₂ = 0.7·HCO₃⁻ + 21 to find the expected PaCO₂.

HCO₃⁻ 30 mmol/L
PaCO₂ = mmHg

Answer key

  1. 1. respiratory alkalosis
  2. 2. P/F = 286.7 mmHg
  3. 3. uncompensated
  4. 4. partially compensated
  5. 5. PaCO₂ = 49.7 mmHg
  6. 6. PaCO₂ = 42 mmHg

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