Which diagnostic test may be prescribed to evaluate for the presence of a pulmonary embolism?
Stress testing
D-Dimer
Electrocardiogram
Pulmonary function testing
The Correct Answer is B
A. Stress testing evaluates cardiac function and ischemia but is not used to diagnose a pulmonary embolism (PE).
B. D-Dimer is correct. D-Dimer is a blood test that detects fibrin degradation products, which are elevated when a blood clot forms and breaks down, making it a useful screening test for pulmonary embolism. However, a positive D-Dimer is not diagnostic, and further imaging (e.g., CT pulmonary angiography) is required.
C. Electrocardiogram (ECG) may show changes (e.g., sinus tachycardia, right heart strain) but does not confirm PE.
D. Pulmonary function testing assesses lung diseases like COPD or asthma but is not used to diagnose PE.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Annual Influenza immunization is important for individuals with chronic bronchitis but does not directly prevent the disorder from occurring. It helps reduce respiratory infections, which can exacerbate symptoms.
B. Regular moderate exercise improves overall lung function but does not specifically prevent chronic bronchitis.
C. Smoking cessation is the most effective measure in preventing chronic bronchitis. Chronic bronchitis is strongly linked to long-term cigarette smoking, which causes inflammation and excessive mucus production in the airways.
D. Maintenance of ideal weight supports overall health but is not a primary factor in preventing chronic bronchitis.
Correct Answer is A
Explanation
A. Metformin is correct. The combination of iodinated contrast dye and metformin increases the risk of contrast-induced nephropathy (CIN) and lactic acidosis, especially in clients with pre-existing kidney dysfunction. Metformin should be held before and after the procedure until renal function is reassessed.
B. Nitroglycerin is used for angina and does not interact with contrast dye.
C. Atorvastatin (a statin) is used for cholesterol management and has no significant interaction with contrast dye.
D. Carvedilol (a beta-blocker) is used for heart failure and hypertension but does not increase the risk of contrast-induced kidney injury.
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