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Review Question - QID 213546

Mechanical Ventilation Complications Acid-base status derangements QID: 213546 (M2.OMB.19.4873)
In scope icon M 7 B
QID 213546 (Type "213546" in App Search)
A 25-year-old man with a past medical history of alcoholism presents to the emergency department acutely intoxicated. The patient is unable to offer any additional history; however, he was found unconscious at a farmer’s market. He has a known history of alcohol and IV drug abuse. His temperature is 102°F (38.9°C), blood pressure is 104/64 mmHg, pulse is 110/min, respirations are 33/min, and oxygen saturation is 88% on room air. An initial venous blood gas is notable for a respiratory acidosis. A chest radiograph is performed as seen in Figure A and the patient is subsequently intubated. One hour later, a venous blood gas is obtained as seen below.

pH: 7.50
PaO2: 55 mmHg
PaCO2: 19 mmHg
HCO3: 24 mEq/L
Oxygen saturation: 100%

Which of the following is the best adjustment to the patient’s ventilator?
  • A
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  • A