An NP is called to assess a 76-year-old female patient who h…
An NP is called to assess a 76-year-old female patient who has a known history of systolic heart failure. The patient is being admitted to the hospital with complaints of couch orthopnea and declining activity tolerance. Oxygen saturations are lower than her usual baseline and a chest x-ray demonstrates pulmonary venous hypertension. Which is the initial intervention in the treatment of this patient?