Calculate the static compliance using the information from the scalar below.
a. 10 mL/cm H2O
b. 16 mL/cm H2O
c. 20 mL/cm H2O
d. 80 mL/cm H2O
Q. 2 The ventilator graphics generated by mechanical ventilation with pressure-controlled continuous mandatory ventilation (PC-CMV), rate 18, peak inspiratory pressure (PIP) 25 cm H2O,
positive end-expiratory pressure (PEEP) 5 cm H2O, are shown in the scalars below. Interpretation of these scalars reveals which of the following?
a. The flow rate is set too high and should be reduced.
b. There is air trapping that could be due to a high respiratory rate.
c. The ventilator settings are appropriate and there are no problems.
d. There is a leak in the system that needs to be identified and corrected.
Q. 3 Calculate the airway resistance (Raw) using the information from the scalar below.
a. 0.9 cm H2O/L/sec
b. 1.1 cm H2O/L/sec
c. 22.4 cm H2O/L/sec
d. 60 cm H2O/L/sec
Q. 4 The respiratory therapist observes the pressure-time scalar seen below. Wave A was generated at 1300 hour and wave B at 1600 hour. The action that is most appropriate for this situation is which of the following?
a. Add positive end-expiratory pressure (PEEP).
b. Change the endotracheal tube (ET).
c. Change to pressure-controlled continuous mandatory ventilation (PC-CMV).
d. Administer a bronchodilator.
Q. 5 The most important factor to affect the degree of resistance in the airways is which of the fol-lowing?
a. Flow rate of the gas
b. Viscosity of the gas
c. Length of the airways
d. Diameter of the airways
Q. 6 What is the trigger variable for the A breath shown in the figure below?
a. Flow
b. Time
c. Pressure
d. Volume
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