A client with atrial fibrillation is scheduled for an elective cardioversion. The nurse prepares for the procedure by inserting two intravenous (IV) catheters and connecting the monitoring lead wires to the client. Which action is most crucial for the nurse to take before initiating the cardioversion?
Explanation & Rationale
Choice A rationale Activating the synchronization mode is important during cardioversion to avoid delivering a shock during the vulnerable period of cardiac repolarization, which could potentially cause a life-threatening arrhythmia. However, it is not the most crucial action. Choice B rationale Choosing a monitor lead with a tall R wave can help ensure that the cardioverter-defibrillator can sense the patient’s intrinsic cardiac activity. However, this is not the most crucial action. Choice C rationale Administering the prescribed sedative is the most crucial action before initiating cardioversion. Sedation is necessary to ensure patient comfort and cooperation during the procedure, as cardioversion can be painful. Choice D rationale Verifying the prothrombin time (PT) is important in patients receiving anticoagulation therapy, as atrial fibrillation increases the risk of thrombus formation. However, it is not the most crucial action before initiating cardioversion.