For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.
Name: ____________________ Date: ____________
1.Easy
A practice arterial blood gas shows pH 7.21, PaCO₂ 75 mmHg (10.0 kPa) and HCO₃⁻ 29 mmol/L. Which primary disorder is it? Click the cell in the grid.
pH 7.21PaCO₂ 75 mmHg (10.0 kPa)HCO₃⁻ 29 mmol/L
1respiratory acidosis
2metabolic acidosis
3respiratory alkalosis
4metabolic alkalosis
2.Easy
A practice arterial blood gas shows pH 7.29, PaCO₂ 39 mmHg (5.2 kPa) and HCO₃⁻ 18 mmol/L. Which primary disorder is it? Click the cell in the grid.
pH 7.29PaCO₂ 39 mmHg (5.2 kPa)HCO₃⁻ 18 mmol/L
1respiratory acidosis
2metabolic acidosis
3respiratory alkalosis
4metabolic alkalosis
3.Medium
A practice arterial blood gas shows pH 7.59, PaCO₂ 38 mmHg (5.1 kPa) and HCO₃⁻ 35 mmol/L. The primary disorder is metabolic alkalosis. How far is it compensated? Click your answer.
pH 7.59PaCO₂ 38 mmHg (5.1 kPa)HCO₃⁻ 35 mmol/L
1uncompensated
2partially compensated
3fully compensated
4.Medium
A practice arterial blood gas shows pH 7.37, PaCO₂ 61 mmHg (8.1 kPa) and HCO₃⁻ 34 mmol/L. The primary disorder is respiratory acidosis. How far is it compensated? Click your answer.
pH 7.37PaCO₂ 61 mmHg (8.1 kPa)HCO₃⁻ 34 mmol/L
1uncompensated
2partially compensated
3fully compensated
5.Hard
A practice gas shows a respiratory acidosis: pH 7.30, PaCO₂ 77 mmHg (10.3 kPa), HCO₃⁻ 37 mmol/L. Use the rules ‘HCO₃⁻ rises 1 mmol/L per 10 mmHg (acute) or 3.5 mmol/L per 10 mmHg (chronic)’ to classify it. Click your answer.
pH 7.30PaCO₂ 77 mmHg (10.3 kPa)HCO₃⁻ 37 mmol/L
1acute
2chronic
3acute on chronic
6.Hard
At sea level, a practice gas taken on 21% oxygen shows PaO₂ 81 mmHg (10.8 kPa) and PaCO₂ 33 mmHg (4.4 kPa). Use PAO₂ = FiO₂·(760 − 47) − PaCO₂/0.8 to find the A–a gradient.