You are the charge nurse of the coronary care step-down unit. Which patient is best to assign to an RN who has floated for the day from the general medical-surgical unit?

A patient receiving IV furosemide (Lasix) to treat acute left ventricular failure.

A patient requiring discharge teaching about coronary artery stenting prior to going home today.

A patient just transferred from the radiology department after a coronary angioplasty.

A patient just admitted with unstable angina who has orders for a heparin infusion and aspirin.