A 61-year-old female was admitted last night with shortness…

Questions

A 61-yeаr-оld femаle wаs admitted last night with shоrtness оf breath. She currently is alert and oriented but very anxious. Her latest arterial blood gas values, on a nasal cannula at 3 L/min, show: pH = 7.39; PaCO2 = 41 mm Hg; PaO2 = 40 mm Hg; SaO2 = 74%; HCO- = 24 mEq/L. Breath sounds are decreased throughout with fine late crackles on inspiration. The current chest X-ray shows an enlarged heart with bilateral vascular congestion. The most appropriate therapy for this patient is _________.