The therapist is preparing to mechanically ventilate a patient using a lung protective strategy. Which of the following approaches to mechanical ventilation should be used? I. high lung volumes and high pressures II. low lung volumes and low PEEP III. permissive hypercapnia IV. high lung volumes and low pressures
A. II, III only
B. III, IV only
C. I, II, IV only
D. II, III, IV only
??ANS: A
A. Correct response: The use of low tidal volumes and low PEEP, and permissive hypercapnia constitute protective lung strategies.
B. Incorrect response: The use of high tidal volumes and low pressure contributes to VILI.
C. Incorrect response: The use of high tidal volumes with either high or low pressures is associated with VILI.
D. Incorrect response: See explanation B.
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