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.

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Name: ____________________   Date: ____________

1.Easy
60 s400 mLf = 9/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 9 times a minute with a tidal volume of 400 mL. Find the minute ventilation V̇E in L/min.

VT 400 mL9/min
V̇E = L/min
2.Easy
60 s680 mLf = 12/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 12 times a minute with a tidal volume of 680 mL. Find the minute ventilation V̇E in L/min.

VT 680 mL12/min
V̇E = L/min
3.Medium
1250psiEf = 0.28 L/psi10 L/minresidual 200 psit = ? min

Practice exercise (made-up values, not clinical guidance). A size E oxygen cylinder (factor 0.28 L/psi) reads 1250 psi and runs at 10 L/min. Keeping a safe residual of 200 psi, how many minutes t will it last? Round down to a whole minute.

1250 psif = 0.28 L/psi10 L/min200 psi
t = min
4.Medium
2050psiEf = 0.28 L/psi10 L/minresidual 200 psit = ? min

Practice exercise (made-up values, not clinical guidance). A size E oxygen cylinder (factor 0.28 L/psi) reads 2050 psi and runs at 10 L/min. Keeping a safe residual of 200 psi, how many minutes t will it last? Round down to a whole minute.

2050 psif = 0.28 L/psi10 L/min200 psi
t = min
5.Hard
100 kg171 cm♂5 mL/kg PBWVT​ = ? mL

Practice exercise (made-up values, not clinical guidance). A ventilated man is 171 cm tall and weighs 100 kg. Lung-protective ventilation is set at 5 mL per kg of predicted body weight. Using PBW = 50 + 0.91 × (height cm − 152.4) kg, find the tidal volume VT to the nearest mL.

171 cm100 kg5 mL/kg
VT = mL
6.Hard
61 kg161 cm♀6 mL/kg PBWVT​ = ? mL

Practice exercise (made-up values, not clinical guidance). A ventilated woman is 161 cm tall and weighs 61 kg. Lung-protective ventilation is set at 6 mL per kg of predicted body weight. Using PBW = 45.5 + 0.91 × (height cm − 152.4) kg, find the tidal volume VT to the nearest mL.

161 cm61 kg6 mL/kg
VT = mL

Answer key

  1. 1. V̇E = 3.6 L/min
  2. 2. V̇E = 8.16 L/min
  3. 3. t = 29 min
  4. 4. t = 51 min
  5. 5. VT = 335 mL
  6. 6. VT = 320 mL

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