[Solved]: A 64-year-old woman with COPD was admitted to the…

A 64-year-old woman with COPD was admitted to the emergency department with extreme shortness of breath. She had a bluish color that was particularly pronounced on her lips and nail beds and she displayed a weak and persistent cough with diminished but rattling breath sounds. Home medications included bronchodilators, steroids, Lasix (a loop diuretic that does not conserve plasma potassium), and digitalis. Vital signs: heart rate, 148 bpm; blood pressure,