The Nurse Is Caring for a Patient with a Pulmonary

The nurse is caring for a patient with a pulmonary artery catheter.Assessment findings include a blood pressure of 85/40 mm Hg,heart rate of 125 beats/min,respiratory rate 35 breaths/min,and arterial oxygen saturation (SpO₂) of 90% on a 50% Venturi mask.Hemodynamic values include a cardiac output (CO) of 1.0 L/min,central venous pressure (CVP) of 1 mm Hg,and a pulmonary artery occlusion pressure (PAOP) of 3 mm Hg.The nurse questions which of the following physician's orders?

A) Titrate supplemental oxygen to achieve a SpO₂ 94%.
B) Infuse 500 mL 0.9% normal saline over 1 hour.
C) Obtain arterial blood gas and serum electrolytes.
D) Administer furosemide (Lasix) 20 mg intravenously.