A Patient with Chronic Obstructive Pulmonary Disease (COPD) Is in Acute

A patient with chronic obstructive pulmonary disease (COPD) is in acute respiratory failure and has been placed on mechanical ventilation. Four hours after mechanical ventilation is initiated, the patient's ABG results include a pH of 7.50, PaO₂ of 80 mm Hg, PaCO₂ of 29 mm Hg, and HCO₃- of 23 mEq/L (23 mmol/L) . The nurse will anticipate the need to

A) increase the FIO2.
B) increase the tidal volume (VT) .
C) decrease the respiratory rate.
D) leave the ventilator on the current settings.

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