A nurse is planning care for a client who has suspected cardiac tamponade. Which of the following diagnostic tests should the nurse anticipate the provider to order first?
Computed tomography (CT) scan
Chest x-ray
Echocardiogram
Electrocardiogram (ECG)
The Correct Answer is C
A) Computed tomography (CT) scan: A CT scan may provide detailed images of the heart and surrounding structures, but it is not typically the initial diagnostic test used to assess for cardiac tamponade. CT scans are often used in conjunction with other diagnostic tests but are not the first-line investigation for suspected tamponade.
B) Chest x-ray: While a chest x-ray may show signs of cardiac tamponade, such as an enlarged cardiac silhouette or evidence of fluid accumulation around the heart, it is not as sensitive or specific as other diagnostic tests, particularly in the acute setting. Chest x-rays may be obtained as part of the diagnostic workup, but they are not the first-line test for suspected tamponade.
C) Echocardiogram: An echocardiogram is the most appropriate initial diagnostic test for suspected cardiac tamponade. It provides real-time imaging of the heart and can detect pericardial effusion, collapse of the right atrium and ventricle during diastole (diastolic collapse), and signs of hemodynamic compromise. Echocardiography allows for rapid assessment at the bedside and can guide immediate management decisions.
D) Electrocardiogram (ECG): While an electrocardiogram may show nonspecific changes in cardiac tamponade, such as low-voltage QRS complexes or electrical alternans, it is not as sensitive or specific as an echocardiogram for diagnosing tamponade. ECG findings may support the diagnosis but are not typically the first-line test for suspected tamponade.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. White blood cell level of 5,900 mm3: While abnormal white blood cell levels can indicate infection or inflammation, they are not typically associated with directly contributing to an episode of delirium. However, underlying conditions that cause abnormal white blood cell levels, such as infection or inflammation, may contribute to delirium.
B. Potassium level of 4.1 mEq/L: Potassium imbalances can lead to various neurological symptoms, including weakness, paralysis, and cardiac arrhythmias. However, a potassium level of 4.1 mEq/L is within the normal range and is unlikely to directly contribute to an episode of delirium.
C. Hemoglobin level of 14.2 g/dL: Hemoglobin levels reflect the oxygen-carrying capacity of the blood and are not directly associated with delirium. While severe anemia or hypoxia can cause neurological symptoms, a hemoglobin level of 14.2 g/dL is within the normal range and is unlikely to directly contribute to delirium.
D. Blood glucose level of 254 mg/dL: Elevated blood glucose levels, as indicated by a blood glucose level of 254 mg/dL, can contribute to an episode of delirium. Hyperglycemia can lead to alterations in cerebral metabolism, neuronal dysfunction, and impaired cognitive function, predisposing individuals to delirium. Additionally, hyperglycemia can exacerbate preexisting neurological conditions and increase the risk of developing delirium in critically ill patients. Therefore, monitoring and managing blood glucose levels are essential in preventing and managing delirium in hospitalized patients.
Correct Answer is ["B","C"]
Explanation
A. Difficulty swallowing: Difficulty swallowing is not typically associated with atrial fibrillation. It may be a symptom of various other conditions such as dysphagia, esophageal disorders, or neurological disorders, but it is not a common manifestation of atrial fibrillation.
B. Shortness of breath: This is the correct answer. Shortness of breath, or dyspnea, is a common symptom of atrial fibrillation. Atrial fibrillation can lead to ineffective atrial contraction, resulting in decreased cardiac output and potential fluid accumulation in the lungs, leading to dyspnea.
C. Exertional fatigue: This is the correct answer. Exertional fatigue, or feeling excessively tired or weak with physical activity, is a common manifestation of atrial fibrillation. Reduced cardiac output and inefficient heart function due to irregular heart rhythms can lead to fatigue, especially during exertion.
D. Weight gain: Weight gain is not typically associated with atrial fibrillation. While some individuals with heart conditions may experience fluid retention and subsequent weight gain, it is not a specific manifestation of atrial fibrillation itself.
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