Oxygen therapy & respiratory calculations worksheet with answers

Free printable Oxygen therapy & respiratory calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

New worksheetPractise online with hints

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
60 s480 mLf = 32/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 32 times a minute with a tidal volume of 480 mL. Find the minute ventilation V̇E in L/min.

VT 480 mL32/min
V̇E = L/min
2.Easy
60 s530 mLf = 11/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 11 times a minute with a tidal volume of 530 mL. Find the minute ventilation V̇E in L/min.

VT 530 mL11/min
V̇E = L/min
3.Medium
Hb99 g/LSaO₂98%PaO₂108 mmHgCaO₂?

Practice exercise (made-up values, not clinical guidance). A patient has Hb 99 g/L, SaO₂ 98% and PaO₂ 108 mmHg (14.4 kPa). Find the arterial oxygen content CaO₂ = 1.34 × Hb (g/dL) × SaO₂ + 0.003 × PaO₂ (mmHg) in mL O₂/dL.

Hb 99 g/LSaO₂ 98%PaO₂ 108 mmHg (14.4 kPa)
CaO₂ = mL/dL
4.Medium
Hb92 g/LSaO₂96%PaO₂80 mmHgCaO₂?

Practice exercise (made-up values, not clinical guidance). A patient has Hb 92 g/L, SaO₂ 96% and PaO₂ 80 mmHg (10.7 kPa). Find the arterial oxygen content CaO₂ = 1.34 × Hb (g/dL) × SaO₂ + 0.003 × PaO₂ (mmHg) in mL O₂/dL.

Hb 92 g/LSaO₂ 96%PaO₂ 80 mmHg (10.7 kPa)
CaO₂ = mL/dL
5.Hard
1150psiDf = 0.16 L/psi75 minresidual 200 psiQ = ? L/min

Practice exercise (made-up values, not clinical guidance). A transfer will take 75 minutes. The size D cylinder (factor 0.16 L/psi) reads 1150 psi. Keeping a safe residual of 200 psi, what is the highest whole-number flow Q in L/min that lasts the whole transfer?

75 min1150 psif = 0.16 L/psi200 psi
Q = L/min
6.Hard
Hb153 g/LSaO₂93%PaO₂67 mmHgCaO₂mL/dL× CO4.7 L/minDO₂?

Practice exercise (made-up values, not clinical guidance). A patient has Hb 153 g/L, SaO₂ 93%, PaO₂ 67 mmHg (8.9 kPa) and a cardiac output of 4.7 L/min. With CaO₂ = 1.34 × Hb (g/dL) × SaO₂ + 0.003 × PaO₂ (mmHg), find the oxygen delivery DO₂ = CaO₂ × CO × 10 in mL/min.

Hb 153 g/LSaO₂ 93%PaO₂ 67 mmHg (8.9 kPa)CO 4.7 L/min
DO₂ = mL/min

Answer key

  1. 1. V̇E = 15.36 L/min
  2. 2. V̇E = 5.83 L/min
  3. 3. CaO₂ = 13.32 mL/dL
  4. 4. CaO₂ = 12.07 mL/dL
  5. 5. Q = 2 L/min
  6. 6. DO₂ = 905.6 mL/min

Full step-by-step solutions: practise this topic on examproblems.com.