Which of the following medications are going to dilate the coronary arteries and redirect blood flow so that ischemic tissue is oxygenated?
Salmeterol
Aspirin
Digoxin
Nitroglycerin
The Correct Answer is D
Choice A reason: Salmeterol, a long-acting bronchodilator, opens airways in asthma or COPD but doesn’t dilate coronary arteries or improve cardiac ischemia, targeting lungs instead.
Choice B reason: Aspirin prevents clotting by inhibiting platelet aggregation, reducing ischemia risk, but it doesn’t directly dilate coronary arteries or acutely redirect blood flow.
Choice C reason: Digoxin increases cardiac contractility in heart failure, improving output, but it doesn’t dilate coronary vessels or specifically oxygenate ischemic myocardium.
Choice D reason: Nitroglycerin, a vasodilator, relaxes coronary arteries, increasing blood flow to ischemic areas, relieving angina by enhancing oxygen delivery to the heart muscle.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Fever of 103°F may occur in thyroid storm, not goiter, which is simply thyroid enlargement without systemic hypermetabolism or infection necessarily.
Choice B reason: Goiter is defined by thyroid gland enlargement, often from iodine deficiency or hyperplasia, palpable as a neck mass, the core characteristic here.
Choice C reason: Fibrotic tissue in arterioles relates to vascular diseases, not goiter, which involves thyroid tissue growth, not arterial structural changes.
Choice D reason: Glycosaminoglycan deposits occur in myxedema (hypothyroidism), not goiter, which is enlargement alone, not skin or connective tissue alteration.
Correct Answer is A
Explanation
Choice A reason: CT scan rapidly detects ischemic stroke or hemorrhage in the brain, critical for numbness, headache, and speech issues, guiding urgent treatment decisions.
Choice B reason: Hemoglobin and hematocrit assess blood count, not brain pathology like stroke, which requires imaging to identify infarction or bleeding, not anemia.
Choice C reason: MRI offers detailed stroke imaging but is slower than CT, less ideal for acute ER settings needing immediate diagnosis of neurological symptoms.
Choice D reason: Pulmonary angiography evaluates lung vessels for embolism, irrelevant to stroke symptoms (numbness, headache, speech difficulty), which localize to brain issues.
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