A nurse is assisting in the plan of care for a client who has a suspected myocardial infarction. Which of the following medications should the nurse plan to administer first?
Morphine
Nitroglycerin
Aspirin
Oxygen
The Correct Answer is D
Choice A reason : Morphine is an opioid analgesic used to relieve severe pain and can be administered to patients with myocardial infarction to alleviate chest pain and anxiety. However, it is not the first medication given as it does not address the underlying cause of the myocardial infarction, which is the formation of a blood clot in the coronary arteries.
Choice B reason : Nitroglycerin is a nitrate that helps to dilate blood vessels and improve blood flow. It can be used to relieve chest pain in myocardial infarction, but similar to morphine, it is not the initial medication of choice. The priority is to prevent further blood clotting.
Choice C reason : Administered as soon as possible to inhibit platelet aggregation and reduce clot progression.
Choice D reason : When a myocardial infarction (MI) is suspected, the priority is to address tissue hypoxia and ensure adequate oxygenation to minimize myocardial damage. Administering oxygen helps increase oxygen availability to the ischemic heart tissue, reducing further damage.
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Related Questions
Correct Answer is ["50"]
Explanation
Step 1 is to calculate the total drops (gtt) the nurse needs to administer. This is done by multiplying the volume of the solution (400 mL) by the drop factor (60 gtt/mL). So, 400 mL × 60 gtt/mL = 24000 gtt.
Step 2 is to calculate the total time in minutes over which the IV should be administered. Since there are 60 minutes in an hour, 8 hours is equivalent to 8 hours × 60 min/hour = 480 minutes.
Step 3 is to calculate the rate at which the IV should be administered. This is done by dividing the total drops by the total time. So, 24000 gtt ÷ 480 min = 50 gtt/min.
The nurse should set the manual IV infusion to deliver approximately 50 gtt/min.
Correct Answer is B
Explanation
Choice A reason : Epinephrine is an adrenergic agonist primarily used in the management of cardiac arrest, anaphylaxis, and severe asthma attacks. It is not used to reverse the effects of warfarin overdose. Warfarin acts as an anticoagulant by inhibiting vitamin K-dependent clotting factors, and epinephrine has no role in this mechanism.
Choice B reason : Vitamin K is the antidote for warfarin toxicity. Warfarin works by inhibiting the vitamin K-dependent clotting factors II, VII, IX, and X. In the event of an overdose, vitamin K is administered to reverse the anticoagulant effects of warfarin and restore the clotting factor levels to normal. The administration can be oral or intravenous, depending on the severity of the overdose and the urgency of the situation.
Choice C reason : Atropine is an anticholinergic drug used to treat bradycardia (slow heart rate) and as an antidote for organophosphate poisoning. It does not have a role in reversing warfarin overdose as it does not affect the clotting cascade or vitamin K metabolism.
Choice D reason : Protamine is used to reverse the effects of heparin, another anticoagulant, but not warfarin. Protamine sulfate binds to heparin, forming a stable complex and neutralizing its anticoagulant effects. Since warfarin's mechanism of action is different from heparin's, protamine is not effective in reversing warfarin toxicity.
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