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
ANS: D
Other techniques that may be helpful in improving arterial O2 levels include the use of PCV with a prolonged inspiratory time, use of an inspiratory pause, inverse 1:E ratio ventilation, and prone positioning.
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