A client receives a 12-lead electrocardiogram (ECG) and asks the practical nurse (PN) what the test is measuring. Which information should the PN explain about this diagnostic test?
It detects and maps electrical activity in areas of the brain.
It uses X-rays and a computer to produce pictures of organs.
It records eye and muscle movements in response to sounds.
It graphs electrical impulses to show how the heart is functioning.
The Correct Answer is D
Choice A reason: This describes an electroencephalogram (EEG), not an ECG. An EEG detects and maps electrical activity in areas of the brain, which is useful for diagnosing conditions such as epilepsy and other brain disorders.
Choice B reason: This describes a computed tomography (CT) scan. A CT scan uses X-rays and a computer to produce detailed images of internal organs and structures. It is not related to the electrical activity of the heart.
Choice C reason: This describes an electromyography (EMG) test or an auditory brainstem response (ABR) test. EMG records electrical activity in muscles, while ABR measures eye and muscle responses to sounds to evaluate the auditory pathways in the brainstem. Neither of these tests is related to recording heart function.
Choice D reason: A 12-lead ECG graphs the electrical impulses generated by the heart as it beats. This test helps evaluate the heart's rhythm, detect any abnormalities, and diagnose various heart conditions such as arrhythmias, myocardial infarctions, and other cardiac issues. By capturing the electrical activity from different angles, the ECG provides a comprehensive picture of the heart's functioning.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","E"]
Explanation
Choice A reason: Suction equipment is essential for a client who has undergone fixation of a mandible fracture. Due to the nature of the surgery and the presence of wiring, the client may have difficulty managing oral secretions. Suction equipment ensures that any secretions can be promptly and effectively removed, preventing aspiration and maintaining a clear airway. This equipment is vital for managing the client's immediate postoperative needs and ensuring their safety.
Choice B reason: A crash cart, while critical in emergency situations, is not specifically required to be present in the client's room following mandible fracture fixation. Crash carts are typically available on the unit and can be quickly brought to the room if needed. The practical nurse should be familiar with the location of the crash cart and how to access it, but it does not need to be permanently stationed in the client's room.
Choice C reason: A non-rebreather mask is used to deliver high concentrations of oxygen to clients experiencing severe respiratory distress or hypoxemia. While it is an important piece of equipment for respiratory emergencies, it is not specifically necessary to have in the room of a client with a mandible fracture fixation. The priority is to have suction equipment and wire cutters immediately available, while other oxygen delivery devices can be accessed as needed.
Choice D reason: A nasogastric tube is used for decompression of the stomach or for feeding clients who are unable to take oral nutrition. It is not specifically required for a client with a mandible fracture fixation unless there are additional complications or indications for its use. The practical nurse should focus on equipment directly related to managing the fixation and maintaining the client's airway.
Choice E reason: Wire cutters are a critical item to have in the room of a client with a mandible fracture fixation. In the event of an emergency, such as vomiting or respiratory distress, the wires securing the mandible may need to be quickly cut to ensure the client's airway is not compromised. Having wire cutters immediately available ensures that the practical nurse can respond swiftly and effectively to any urgent situations, maintaining the client's safety and airway patency.
Correct Answer is A
Explanation
Choice A reason: Using a large cuff to obtain BP readings on either thigh is the appropriate action. With a history of a right radical mastectomy, blood pressure should not be taken on the right arm due to the risk of lymphedema. The left arm is also not suitable due to the recent surgery and cast. Therefore, the thigh is the best alternative site for accurate BP measurement.
Choice B reason: Measuring all vital signs every 2 hours except the BP is not appropriate because BP is a critical vital sign that needs to be monitored regularly, especially in postoperative clients. Omitting BP measurements could miss important changes in the client's condition.
Choice C reason: Obtaining manual BP readings with a cuff on the left arm is not recommended as the client has a recent surgical repair and cast on the left arm. This can cause discomfort and may not provide accurate readings.
Choice D reason: Quickly releasing air from the BP cuff on the right arm is not suitable due to the client's history of right radical mastectomy. This practice could exacerbate the risk of developing lymphedema in the affected arm.
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