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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1.Easy
60 s530 mLf = 17/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 17 times a minute with a tidal volume of 530 mL. Find the minute ventilation V̇E in L/min.

VT 530 mL17/min
V̇E = L/min
2.Easy
60 s600 mLf = 17/min · V̇E = ?

Practice exercise (made-up values, not clinical guidance). A patient breathes 17 times a minute with a tidal volume of 600 mL. Find the minute ventilation V̇E in L/min.

VT 600 mL17/min
V̇E = L/min
3.Medium
1650psiEf = 0.28 L/psi6 L/minresidual 200 psit = ? min

Practice exercise (made-up values, not clinical guidance). A size E oxygen cylinder (factor 0.28 L/psi) reads 1650 psi and runs at 6 L/min. Keeping a safe residual of 200 psi, how many minutes t will it last? Round down to a whole minute.

1650 psif = 0.28 L/psi6 L/min200 psi
t = min
4.Medium
60 s410 mLf = 24/min · V̇A = ?VD​ = 150 mL

Practice exercise (made-up values, not clinical guidance). A patient breathes 24 times a minute with a tidal volume of 410 mL. The anatomical dead space is 150 mL. Find the alveolar ventilation V̇A in L/min.

VT 410 mL24/minVD 150 mL
V̇A = L/min
5.Hard
950psiDf = 0.16 L/psi90 minresidual 200 psiQ = ? L/min

Practice exercise (made-up values, not clinical guidance). A transfer will take 90 minutes. The size D cylinder (factor 0.16 L/psi) reads 950 psi. Keeping a safe residual of 200 psi, what is the highest whole-number flow Q in L/min that lasts the whole transfer?

90 min950 psif = 0.16 L/psi200 psi
Q = L/min
6.Hard
1400psiEf = 0.28 L/psi90 minresidual 200 psiQ = ? L/min

Practice exercise (made-up values, not clinical guidance). A transfer will take 90 minutes. The size E cylinder (factor 0.28 L/psi) reads 1400 psi. Keeping a safe residual of 200 psi, what is the highest whole-number flow Q in L/min that lasts the whole transfer?

90 min1400 psif = 0.28 L/psi200 psi
Q = L/min

Answer key

  1. 1. V̇E = 9.01 L/min
  2. 2. V̇E = 10.2 L/min
  3. 3. t = 67 min
  4. 4. V̇A = 6.24 L/min
  5. 5. Q = 1 L/min
  6. 6. Q = 3 L/min

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