The physician asks the respiratory therapist to set a mechanically ventilated patient's PEEP at an optimal level. The PEEP level is optimal when
A. PEEP levels are less than 18 cm H2O.
B. PaO2 is 60 torr or greater.
C. Oxygen delivery to the tissues is maximal.
D. C(a-v)O2 is decreasing.
Answer: C. Oxygen delivery to the tissues is maximal.
Health Professions
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