A nurse is caring for a client in the intensive care unit. Which of the following laboratory values could contribute to an episode of delirium?
White blood cell level of 5,900 mm3
Potassium level of 4.1 mEq/L
Hemoglobin level of 14.2 g/dL
Blood glucose level of 254 mg/dL
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is ["A","B","D","E"]
Explanation
A. Elevated erythrocyte sedimentation rate (ESR): Elevated ESR is commonly seen in inflammatory conditions such as pericarditis. ESR measures the rate at which red blood cells settle in a tube of blood over a certain period, and elevated levels indicate inflammation or tissue damage.
B. Increased C-reactive protein (CRP): CRP is an acute-phase reactant produced by the liver in response to inflammation. Elevated CRP levels are indicative of inflammation, making it a useful marker in pericarditis.
C. Elevated thyroid-stimulating hormone (TSH): Elevated TSH levels are not typically associated with pericarditis. TSH is a hormone produced by the pituitary gland that stimulates the thyroid gland to produce thyroid hormones. Elevated TSH levels are seen in conditions such as hypothyroidism.
D. Increased brain natriuretic peptide (BNP): BNP is a hormone produced by the heart in response to increased pressure and volume overload. Pericarditis can lead to increased pressure within the heart, resulting in elevated BNP levels. Therefore, increased BNP levels are anticipated in pericarditis.
E. Increased troponin I: Troponin I is a cardiac biomarker released into the bloodstream when there is damage to cardiac muscle cells. While pericarditis primarily involves inflammation of the pericardium (the sac surrounding the heart), severe cases can lead to myocardial involvement and subsequent release of troponin I. Therefore, increased troponin I levels may be observed in pericarditis, especially if there is myocardial involvement.
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