A patient receiving control-mode continuous mandatory ventilation has the following ABGs on an FiO2 of 0.4: pH = 7.51; PCO2 = 30 mm Hg; HCO3 = 25 mm Hg.
Her current minute ventilation (VE) is 7.9 L/min. What new VE would you recommend?
a. 9.0 L/min
b. 6.7 L/min
c. 7.5 L/min
d. 5.9 L/min
Q. 2 During initial mechanical ventilation of the chronic obstructive pulmonary disease (COPD) pa-tient with chronic hypercapnia, what PaCO2 is most likely used as a target value?
a. 30 mm Hg
b. 40 mm Hg
c. 55 mm Hg
d. 75 mm Hg
Q. 3 What is the recommended response to a drop in PaO2 when the PEEP level is reduced in a me-chanically ventilated patient?
a. Increase the FiO2.
b. Return the PEEP to the previous level.
c. Increase the rate of mechanical breaths.
d. Do nothing.
Q. 4 Which of the following techniques can be used to improve oxygenation beyond increasing the FiO2 or PEEP level? 1. Proning the patient 2. Use of an expiratory pause 3. Use of inverse I:E ratio ventilation
a. 1 only
b. 1 and 2 only
c. 2 and 3 only
d. 1 and 3 only
Q. 5 How frequently should a clinician make changes when weaning from PEEP?
a. 10 to 20 min
b. 30 to 45 min
c. 1 hr
d. 6 to 8 hr
Q. 6 In what clinical condition has pressure-controlled ventilation with a prolonged inspiratory time been shown to be helpful?
a. ARDS/acute lung injury
b. Pulmonary embolism
c. Bilateral pneumonia
d. Severe pulmonary fibrosis
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