A client converts from normal sinus rhythm at 80 bpm to atri…
A client converts from normal sinus rhythm at 80 bpm to atrial fibrillation with a ventricular response at 166 bpm. Blood pressure is 162/74 mm Hg. Respiratory rate is 20 breaths per minute with normal chest expansion and clear lungs bilaterally. IV heparin and Diltiazem are given. The nurse caring for the client understands that the main goal of treatment is what?