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
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Related Questions
Correct Answer is D
Explanation
Choice A rationale
Intravenous, intramuscular, and intradermal routes bypass the first-pass effect as they do not pass through the liver first.
Choice B rationale
Enteric-coated tablets and capsules are designed to bypass the stomach and dissolve in the intestines, reducing the first-pass effect.
Choice C rationale
The first-pass effect involves the liver metabolizing and inactivating a portion of the medication on its first pass through the liver.
Choice D rationale
Enteral medications, which pass through the digestive system, may require higher doses due to the first-pass effect where the liver metabolizes the medication before it reaches systemic circulation. .
Correct Answer is A
Explanation
Choice A rationale
Waiting at least 1 minute in between puffs of the same drug is recommended to allow the medication to be absorbed effectively into the lungs. This helps in achieving the optimal therapeutic effect and ensures that the second puff is not wasted. .
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