TMC Mechanical
Ventilation // TMC
Mechanical Ventilation
Practice questions and
Answers LATEST UPDATE
A 43-year-old male patient was admitted to the emergency
department with a suspected drug overdose. The patient is
receiving oxygen via nonrebreather but is unconscious and isn't
making any respiratory efforts to breathe. The patient's body
weight is 57 kg and his ABG results are as follows:
pH 7.28
PaCO2 74 torr HCO3 20 mEq/L PaO2 315 torr
Which of the following would you recommend?
A. Apply BiPAP with: IPAP 20 cm H2O, EPAP 5 cm H2O, FiO2
30%
B. Intubate and apply: SIMV, tidal volume 600 mL, rate 6/min,
FiO2 40%
C. Intubate and apply: A/C ventilation, tidal volume 450 mL, rate
12/min, FiO2 50%
D. Apply CPAP at 10 cm H2O and an FiO2 of 100% - CORRECT
ANSW-C
A 63-year-old female patient is intubated and receiving
mechanical ventilation in the pressure controlled A/C mode. If the
patient's compliance were to decrease, which of the following
would you expect to occur?
A. Her delivered volume will decrease
B. Her peak pressure will increase
C. Her inspiratory time will increase
D. Her PEEP level will decrease - CORRECT ANSW-A
A 70-year-old male patient is intubated and receiving mechanical
ventilation in the volume controlled A/C mode. After performing
endotracheal suctioning, which of the following would indicate the
effective clearance of retained secretions?
A. An increased tidal volume
B. A decreased inspiratory time
C. A decreased plateau pressure
D. A decreased peak pressure - CORRECT ANSW-D
A 176 lb male patient is intubated and receiving volume control
A/C ventilation with the following settings: FiO2 of 40%, Rate of
12/min, and Tidal Volume of 550 mL. An ABG was analyzed and
the following results were obtained:
ABG Results and Ventilator Settings
pH 7.39
PaCO2 37 mmHg
HCO3- 23 mEq/L
PaO2 107 mmHg
Spontaneous Tidal Volume 180 mL
Spontaneous Rate 37/min
Vital Capacity 550 mL
MIP/NIF -12 cm H2O
Which of the following would you recommend?
A. Place the patient on a 40% T-piece and monitor closely B.
Switch the patient to SIMV at a rate of 5/minute
C. Place the patient on CPAP and monitor closely
D. Maintain the current ventilator settings and re-evaluate later -
CORRECT ANSW-B?
D!
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