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
Explanation
Choice A reason: Fat embolism syndrome (FES) is a serious complication that can occur after a long bone fracture. It happens when fat droplets from the bone marrow enter the bloodstream and travel to the lungs, brain, or other organs, causing a range of symptoms. These can include respiratory distress, cerebral symptoms like confusion or agitation, and petechial rash. The practical nurse must be vigilant for early signs of fat embolism, such as changes in mental status, tachypnea, and hypoxia, as timely intervention is critical to prevent severe outcomes. Monitoring the client's oxygen saturation, respiratory rate, and level of consciousness is essential in detecting this potentially life-threatening condition.
Choice B reason: Urinary retention can be a concern postoperatively due to anesthesia and immobility. While it is important to monitor urinary output and ensure the client is voiding adequately, urinary retention is not as immediately life-threatening as a fat embolism. The practical nurse should still assess bladder function and encourage measures to promote voiding, such as adequate hydration and mobility. However, this complication does not take precedence over the potential for a fat embolism in the early postoperative period following a long bone fracture repair.
Choice C reason: Nonunion refers to the failure of the fracture to heal properly, which can lead to chronic pain and functional impairment. It is a significant complication that requires attention, but it typically develops over a longer period rather than immediately postoperatively. The practical nurse should monitor for signs of nonunion, such as persistent pain and lack of healing on follow-up X-rays. However, this is not the most urgent concern in the immediate postoperative period when compared to the risk of a fat embolism.
Choice D reason: Muscular spasms can occur after a fracture as the muscles around the injury site contract to protect and stabilize the affected area. While muscle spasms can be painful and affect the client's comfort and mobility, they are generally not life-threatening. The practical nurse should address muscle spasms through pain management strategies and physical therapy, but this complication is not as critical as the potential for a fat embolism in the immediate postoperative period.
Correct Answer is B
Explanation
Choice A reason: Asking the client about any changes in vision can provide valuable information regarding the client's subjective experience and any potential progression of cataracts. However, given the observation of milky white pupils, which may indicate a more serious issue such as advanced cataracts or another underlying condition, it is crucial to take immediate and appropriate action. While gathering subjective data is important, notifying the charge nurse ensures that the finding is promptly addressed by the healthcare team.
Choice B reason: Notifying the charge nurse of the finding is the most appropriate action in this scenario. The observation of milky white pupils in a client with cataracts could indicate significant changes or complications that require further evaluation and potential intervention. By promptly reporting this finding to the charge nurse, the practical nurse ensures that the client receives timely and appropriate care, including potential diagnostic tests and consultations with specialists if necessary.
Choice C reason: Assisting the client to a semi-Fowler's position can be beneficial for comfort and to facilitate breathing, especially in bedfast clients. However, this action does not directly address the observation of milky white pupils. The immediate priority is to notify the charge nurse to ensure that the finding is properly evaluated and managed. Positioning the client can be done as part of routine care, but it is not the most urgent response to the observed change.
Choice D reason: Assessing the client using the Glasgow Coma Scale (GCS) is appropriate for evaluating the level of consciousness and neurological status. However, in this context, the observation of milky white pupils is more likely related to an ocular condition rather than a neurological issue. While it is always important to monitor the client's overall status, the immediate priority is to report the finding to the charge nurse for appropriate ocular assessment and management.
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