The physician orders magnesium sulfate 500 mg/h. The medication is supplied in 4 g/250 mL. Calculate the flow rate in milliliters per hour.
The Correct Answer is ["31.25"]
Step 1 is 500 mg ÷ 1000 mg/g = 0.5 g.
Step 2 is 0.5 g ÷ (4 g/250 mL) = 31.25 mL. The final answer is 31.25 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Peripheral arterial disease causes reduced blood flow to the extremities, making them highly susceptible to thermal injury. A heating pad can cause a severe burn because the compromised circulation prevents adequate heat dissipation, and the impaired sensation often associated with PAD means the client may not feel the excessive heat.
Choice B rationale
Crossing legs compresses the popliteal artery and other vessels, further impeding already compromised arterial blood flow to the lower extremities. This action increases resistance and reduces tissue perfusion, exacerbating the ischemic symptoms and potentially worsening the disease progression.
Choice C rationale
Wearing warm, heavy socks is a safe and effective way to promote warmth and vasodilation in the feet without the risk of burns. By maintaining warmth, it helps to prevent vasospasm and promotes better collateral blood flow to the affected extremities, improving comfort and circulation.
Choice D rationale
Smoking causes intense vasoconstriction through nicotine's effects on the sympathetic nervous system and damages the endothelial lining of blood vessels, accelerating the atherosclerotic process. Quitting smoking is the single most effective intervention to slow the progression of PAD and reduce cardiovascular risk.
Correct Answer is ["31.25"]
Explanation
Step 1 is 500 mg ÷ 1000 mg/g = 0.5 g.
Step 2 is 0.5 g ÷ (4 g/250 mL) = 31.25 mL. The final answer is 31.25 mL/hr.
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