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Review Question - QID 213729

Acute Respiratory Distress Syndrome (ARDS) Treatment Interventional QID: 213729 (M2.OMB.19.4873)
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QID 213729 (Type "213729" in App Search)
A 33-year-old homeless man is found sleeping under a bridge. His past medical history is not known, and he is too intoxicated to offer a history. His temperature is 101°F (38.3°C), blood pressure is 93/57 mmHg, pulse is 135/min, respirations are 33/min, and oxygen saturation is 78% on room air. The patient is covered in vomit and has bruises over his skin. Bilateral lung auscultation reveals coarse sounds with diffuse crackles. A chest radiograph is ordered as seen in Figure A. The patient is promptly intubated and mechanically ventilated. His ventilator settings include a positive end-expiratory pressure (PEEP) of 3 cm H2O. The patient's respiratory status worsens, and his PEEP is increased to 15 cm H2O. Which of the following is most directly affected in this patient with this change?
  • A
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  • A