pharm exam 3 practice test

hapter 25: Antidysrhythmic Drugs MULTIPLE CHOICE 1. The nurse is reviewing the classes of antidysrhythmic drugs. Amiodarone (Cordarone) is classified on the Vaughan Williams classification as a class III drug, which means it works by which mechanism of action? a. Blocking slow calcium channels b. Prolonging action potential duration c. Blocking sodium channels and affecting phase 0 d. Decreasing spontaneous depolarization and affecting phase 4 2. A patient is taking procainamide (Pronestyl) for a cardiac dysrhythmia. The nurse will monitor the patient for which possible adverse effect? a. Bradycardia b. Shortened QT interval c. Dyspnea d. Diarrhea 3. Which nursing diagnosis is appropriate for a patient receiving antidysrhythmics? a. Risk for infection b. Deficient knowledge c. Deficient fluid volume d. Urinary retention 4. A patient will be discharged on quinidine sulfate (Quinidex) extended-release tablets for the treatment of ventricular ectopy. The nurse will include which information in the teaching plan? a. The medication should be stopped once the cardiac symptoms subside. b. Signs of cinchonism, such as tinnitus, loss of hearing, or slight blurring o