A nurse is caring for a client that is newly diagnosed with hypertension.Which of the following medications is a beta-adrenergic blocker that has a mechanism of action to decrease heart rate, myocardial contractility, and cardiac output, and is also used to treat hypertension?
Metoprolol.
Nitroglycerin.
Losartan.
Metformin.
The Correct Answer is A
Choice A rationale
Metoprolol is a beta-adrenergic blocker that works by decreasing heart rate, myocardial contractility, and cardiac output. It is commonly used to treat hypertension by reducing the workload on the heart and lowering blood pressure.
Choice B rationale
Nitroglycerin is a vasodilator that is used to treat angina by dilating blood vessels and improving blood flow to the heart. It does not have the same mechanism of action as beta-adrenergic blockers.
Choice C rationale
Losartan is an angiotensin II receptor blocker (ARB) that helps relax blood vessels and lower blood pressure. It does not directly decrease heart rate or myocardial contractility like beta-adrenergic blockers.
Choice D rationale
Metformin is an oral hypoglycemic agent used to manage type 2 diabetes by improving insulin sensitivity and reducing glucose production in the liver. It is not used to treat hypertension and does not have the same mechanism of action as beta-adrenergic blockers.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Decongestants relieve nasal congestion by reducing swelling of the nasal passages.
Choice B rationale
Mucolytics thin and loosen mucus in the airways, making it easier to cough up.
Choice C rationale
Antitussives suppress coughing.
Choice D rationale
Expectorants, like guaifenesin, help thin and loosen mucus, making it easier to clear from the airways.
Correct Answer is B
Explanation
Choice A rationale
Malignant tumors do spread into or invade nearby tissues. This invasive nature allows cancer cells to spread to other parts of the body through the blood or lymph systems.
Choice B rationale
Benign tumors do not spread into or invade nearby tissues. They may grow larger but do not spread to other parts of the body. Benign tumors can be serious if they press on vital structures such as blood vessels or nerves.
Choice C rationale
Benign tumors do not spread and invade nearby tissues. This statement is incorrect and contradicts the true nature of benign tumors.
Choice D rationale
There is a difference between benign and malignant tumors. Malignant tumors are cancerous and invade nearby tissues, whereas benign tumors do not.
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