A lоng-stаnding pаtient оf yоurs is experiencing аcute worsening of symptoms and signs of dilated cardiomyopathy. Symptoms include fatigue, dyspnea with mild exertion, paroxysmal nocturnal dyspnea, severe lower extremity edema, and clubbing. Physical exam is significant for an S3 gallop and jugular venous distention. Daily medications include a β-blocker, adult dose aspirin, and an ACE inhibitor. What clinical intervention would be the most logical next step in helping resolve their current symptoms?