2. A 40-year-old man is receiving mechanical ventilation in the ICU after an admission for severe respiratory failure. The ventilator settings include a tidal volume of 600 ml and respiratory rate of 15. The patient is in a deep coma and cannot increase his total ventilation beyond what the ventilator is set to deliver. On his fifth hospital day, he develops high fevers and is determined to have a new blood stream infection. Which of the following changes would be expected as a result of this change in the patient's condition? A. Decrease in the physiologic dead space B. Decrease in the anatomic dead space C. Increase in the arterial Pco2 D. Increase in ventilation to the dependent regions of the lung E. Increase in the volume of gas delivered to the alveoli with each breath

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