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WorksheetsDesired FiO2 and VE Calculation Practice
Total questions: 10
Worksheet time: 20mins
A 60-year-old patient with acute respiratory distress syndrome (ARDS) has the following ABG values: pH 7.28, PaCO2 60 mmHg, PaO2 48 mmHg, HCO3 30 mEq/L. The current ventilator settings are: mandatory rate 22 breaths/min, inspiratory pressure 24 cm H2O, FiO2 0.70, PEEP 10 cm H2O. What is the desired FiO2 to achieve a PaO2 of 80 mmHg?
Desired PaO2 is unattainable by increasing FiO2 alone
A 45-year-old patient with COPD exacerbation has the following ABG values: pH 7.37, PaCO2 55 mmHg, PaO2 72 mmHg, HCO3 29 mEq/L. The current ventilator settings are: mandatory rate 16 breaths/min, inspiratory pressure 18 cm H2O, FiO2 0.40, PEEP 4 cm H2O. What is the desired FiO2 to achieve a PaO2 of 90 mmHg?
The Desired PaO2 is unobtainable by increasing FiO2 alone
A 70-year-old patient with severe pneumonia has the following ABG values: pH 7.42, PaCO2 40 mmHg, PaO2 58 mmHg, HCO3 24 mEq/L. The current ventilator settings are: mandatory rate 14 breaths/min, inspiratory pressure 20 cm H2O, FiO2 0.45, PEEP 6 cm H2O. What is the desired FiO2 to achieve a PaO2 of 75 mmHg?
A 50-year-old patient with severe asthma exacerbation has the following ABG values: pH 7.25, PaCO2 70 mmHg, PaO2 60 mmHg, HCO3 30 mEq/L. The current ventilator settings are: mandatory rate 24 breaths/min, inspiratory pressure 28 cm H2O, FiO2 0.80, PEEP 5 cm H2O. What is the desired FiO2 to achieve a PaO2 of 80 mmHg?
1.0
A 65-year-old patient with chronic obstructive pulmonary disease (COPD) has the following ABG values: pH 7.32, PaCO2 68 mmHg, PaO2 58 mmHg, HCO3 30 mEq/L. The current ventilator settings are: mandatory rate 18 breaths/min, inspiratory pressure 20 cm H2O, FiO2 0.40, PEEP 4 cm H2O. What is the desired FiO2 to achieve a PaO2 of 75 mmHg?
A 30-year-old patient with pneumonia has the following ABG values: pH 7.38, PaCO2 42 mmHg, PaO2 70 mmHg, HCO3 26 mEq/L. The current ventilator settings are: mandatory rate 14 breaths/min, inspiratory pressure 18 cm H2O, FiO2 0.55, PEEP 5 cm H2O. What is the desired FiO2 to achieve a PaO2 of 80 mmHg?
Increase FiO2 to 0.70
A patient is receiving mechanical ventilation with a minute ventilation of 8.0 L/min. Their PaCO₂ is 60 mmHg, and the physician wants the PaCO₂ reduced to 40 mmHg.
What should the new minute ventilation be?
6.0 L/min
8.0 L/min
10.0 L/min
12.0 L/min
A patient has a current minute ventilation of 7.5 L/min and a PaCO₂ of 55 mmHg. You want to reduce the PaCO₂ to 35 mmHg.
What should the new VE be?
10.5 L/min
11.8 L/min
7.5 L/min
5.0 L/min
A 22-year-old male with a traumatic brain injury is on the ventilator to control ICP. Current settings:
VT: 500 mL
Rate: 18
FiO₂: 0.40
PEEP: 5
ABG:
pH: 7.42
PaCO₂: 44 mmHg
PaO₂: 104 mmHg
Neurosurgery requests the PaCO₂ be lowered to 32 mmHg.
What should the new VE be?
9.5 L/min
10.0 L/min
11.0 L/min
12.0 L/min
A 48-year-old intubated patient in septic shock has:
VT: 470 mL
Rate: 15
FiO₂: 0.40
ABG:
pH: 7.31
PaCO₂: 52 mmHg
PaO₂: 100 mmHg
Target PaCO₂ = 40 mmHg.
What should the new VE be?
8.0 L/min
9.1 L/min
10.5 L/mi
11.4 L/min
