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?
Activate the synchronization mode.
Choose a monitor lead with a tall R wave.
Administer the prescribed sedative.
Verify the prothrombin time (PT).
The Correct Answer is C
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Initiating a hearing and vision screening program for first graders is an example of secondary prevention. Secondary prevention aims to identify and treat an illness or disease at an early stage, which is exactly what a screening program does.
Choice B rationale
Observing a person with type I diabetes mellitus self-administer a dose of insulin is not an example of secondary prevention. This is more related to disease management, which falls under tertiary prevention.
Choice C rationale
Preparing a presentation on how to prevent the spread of lice is an example of primary prevention, which aims to prevent disease or injury before it ever occurs.
Choice D rationale
Collaborating with a science teacher to prepare a health lesson could be seen as primary prevention if the lesson is about preventing disease, or tertiary prevention if it’s about managing existing conditions.
Correct Answer is A
Explanation
Choice A rationale
A large, non-tender, hardened lymph node without overlying tissue inflammation could indicate malignancy. Lymph nodes may become enlarged or hard due to the presence of cancer cells.
Choice B rationale
While bacterial infections can cause lymph node enlargement, they typically also cause tenderness and overlying skin changes, such as redness or warmth.
Choice C rationale
Viral infections can cause generalized lymph node enlargement, but the nodes are usually tender and not hard.
Choice D rationale
Lymphangitis, or inflammation of the lymphatic channels, typically presents with red streaks on the skin, fever, and tenderness.
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