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 ["B","C","D"]
Explanation
Choice A rationale
A productive cough is not a specific indicator of hypoxia. It could be a symptom of many conditions, including a common cold, flu, or other respiratory tract infections.
Choice B rationale
A respiratory rate of 28 breaths/minute is higher than the normal range (12-20 breaths/minute for adults), indicating that the patient may be trying to increase oxygen intake and eliminate carbon dioxide due to hypoxia.
Choice C rationale
An oxygen saturation of 90% on room air is lower than the normal range (95%-100%). This indicates that the patient’s blood is not carrying as much oxygen as it should, which is a sign of hypoxia.
Choice D rationale
A heart rate of 101 beats/minute is higher than the normal range (60-100 beats/minute for adults). This could be a response to hypoxia as the body tries to deliver more oxygen to the tissues.
Choice E rationale
A capillary refill of 4 seconds is slightly longer than the normal range (less than 2 seconds). While this could indicate poor peripheral circulation, it is not a specific or direct indicator of hypoxia.
Choice F rationale
A blood pressure of 145/89 mm Hg is higher than the normal range (less than 120/80 mm Hg). While hypertension could be related to many factors, it is not a specific indicator of hypoxia.
Correct Answer is D
Explanation
Choice A rationale
While any positive response on the CAGE questionnaire could be a cause for concern and warrant further investigation, one positive response does not definitively indicate that the patient should seek help with alcohol addiction. The CAGE questionnaire is a screening tool used to identify potential problems with alcohol, but it is not diagnostic. A healthcare provider would need to conduct a more thorough assessment to diagnose alcohol addiction.
Choice B rationale
It is not necessary for all responses to the CAGE questionnaire to be positive in order to suggest alcohol dependence. The CAGE questionnaire is a screening tool, and while a greater number of positive responses increases the likelihood of alcohol dependence, it is not a requirement for all responses to be positive. A score of two or more is considered clinically significant.
Choice C rationale
The CAGE questionnaire is indeed a tool used to identify potential problems with alcohol, but it is not used to identify general substance abuse. The CAGE questionnaire specifically asks about feelings related to alcohol use. There are other screening tools available that are designed to identify issues with other substances.
Choice D rationale
This is the correct answer. The CAGE questionnaire is a validated screening tool that is widely used in clinical settings to detect alcoholism. It is considered positive, and suggestive of alcohol dependence, if two or more questions are answered affirmatively.
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