RRT-ACCS Practice Questions - NBRC Adult Critical Care Specialist (RRT-ACCS) Exam

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A patient is undergoing one-lung ventilation for a left thoracotomy with a left-sided double-lumen endobronchial tube. SpO2 falls to 85% on FiO2 1.0 with the right (nondependent) lung deflated. The most appropriate first respiratory therapist intervention is to:

Apply CPAP 5 to 10 cm H2O to the nondependent lung Increase tidal volume on the dependent lung to 12 mL/kg Re-inflate the nondependent lung and abandon one-lung ventilation Switch to volume-controlled ventilation with zero PEEP

Correct Answer:

Apply CPAP 5 to 10 cm H2O to the nondependent lung

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