A nurse is caring for a client who is prescribed heparin via intravenous (IV). 40 minutes after the administration of heparin, the client reports "coughing up blood" and notes there is blood in his stool.
Based on the client's presenting symptoms, which of the following options is an antidote for this client?
Benztropine.
Protamine sulfate.
Vitamin K.
Digibind.
The Correct Answer is B
Choice A rationale
Benztropine is an anticholinergic agent used to treat Parkinsonism and extrapyramidal symptoms, not suitable for reversing heparin effects.
Choice B rationale
Protamine sulfate is the specific antidote for heparin overdose. It works by neutralizing the anticoagulant effects of heparin.
Choice C rationale
Vitamin K is an antidote for warfarin overdose, promoting the synthesis of clotting factors, but ineffective against heparin.
Choice D rationale
Digibind is an antidote for digoxin toxicity, not appropriate for counteracting heparin.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Alkylating agents are cytotoxic and work by damaging DNA, preventing cancer cell replication.
Choice B rationale
Antitumor antibiotics are cytotoxic and interfere with DNA or RNA synthesis, inhibiting cancer cell growth.
Choice C rationale
Opiate antagonists are not used in cancer treatment but to reverse opioid overdoses by blocking opioid receptors.
Choice D rationale
Antimetabolites are cytotoxic and interfere with DNA and RNA growth by substituting for the normal building blocks of RNA and DNA.
Correct Answer is A
Explanation
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.
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