A nurse in a coronary care unit is admitting a client who has had CPR following a cardiac arrest. The client is receiving lidocaine IV at 2 mg/min. When the client asks the nurse why he is receiving that medication, the nurse should explain that it has which of the following actions?

A. Lidocaine is an antiarrhythmic medication used to treat and prevent dysrhythmias, particularly after cardiac arrest. It works by stabilizing the cardiac cell membranes, preventing abnormal heart rhythms. B. Lidocaine does not dissolve blood clots; thrombolytics such as tissue plasminogen activator (tPA) are used for clot dissolution. C. Lidocaine does not slow intestinal motility. It is primarily used for managing arrhythmias, not gastrointestinal motility. D. Although lidocaine can be used in certain pain management situations, its primary role in this case is to prevent dysrhythmias rather than relieve pain.