Nokea
A nurse is preparing to administer ceftriaxone 1 g via Intermittent IV bolus over 30 min. Available is 1 g ceftriaxone sodium In 100 mL dextrose 5% in water. The nurse should set the pump to deliver how many mL/hr? (Round the answer to whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 200 mL/hr
Rationale: To calculate the infusion rate for ceftriaxone 1g over 30 minutes, we first convert the time to hours (30 minutes = 0.5 hours). Then, we divide the total volume (100 mL) by the time in hours (0.5) to get the hourly infusion rate: 100 mL / 0.5 hours = 200 mL/hr. This is the correct answer because it ensures the medication is delivered over the prescribed time frame. Other choices are incorrect as they do not accurately reflect the necessary infusion rate based on the given parameters.
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A nurse is preparing to administer lamivudine 150 mg PO BID. Available is lamivudine 100 mg tablets. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 1.5 tablets
Rationale: The correct answer is 1.5 tablets. To calculate this, we first need to determine the total dosage required per dose, which is 150 mg. Since each tablet is 100 mg, we divide 150 mg by 100 mg to find out how many tablets are needed. 150 mg ÷ 100 mg = 1.5 tablets. Therefore, the nurse should administer 1.5 tablets per dose.
Choice A (1 tablet) is incorrect because it does not provide the full dosage of 150 mg per dose. Choice B (2 tablets) is incorrect because it would exceed the required dosage. Choices C-G are also incorrect for the same reason. The correct answer of 1.5 tablets balances the need for the full dosage while avoiding overdosing.
A nurse is caring for a client who has diabetes and a new prescription for 16 units of regular insulin and 32 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?
Correct Answer: 48 units
Rationale: The correct answer is 48 units. To prepare the insulin syringe, the nurse should add the prescribed units of regular insulin (16 units) and NPH insulin (32 units) together. 16 units + 32 units = 48 units. This total of 48 units should be drawn up in the insulin syringe for administration. This ensures the client receives the correct dosage of both insulins at breakfast.
Choice A is incorrect because it does not reflect the total sum of both regular and NPH insulin units. Choices B to G are also incorrect as they do not calculate the total units needed for the client's prescription. It is essential for the nurse to accurately calculate and prepare the total number of units to provide safe and effective care for the client with diabetes.
A nurse is preparing to administer amoxicillin 2 gm/day PO divided into two doses. The amount available is amoxicillin 500 mg tablets. How many tablets should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 2 tablets
Rationale: To administer 2 gm/day of amoxicillin divided into two doses, first, convert 2 gm to mg: 2 gm = 2000 mg. Since each tablet is 500 mg, divide the total dose by the tablet strength: 2000 mg ÷ 500 mg = 4 tablets for the whole day. Divide this by 2 for each dose: 4 tablets ÷ 2 = 2 tablets per dose. Therefore, the correct answer is 2 tablets. Other choices would be incorrect because they do not follow the correct dosage calculation based on the available tablet strength and the prescribed total dose.
A nurse is caring for a client who is postoperative following knee arthroplasty and has a new prescription for 1mg/kg/dose subcutaneous every 12 hr. The client weighs 185 lb. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 83.3 mg
Rationale: To calculate the correct dose in mg, first convert the client's weight from lb to kg. 1 lb is approximately 0.45 kg. So, 185 lb is approximately 83.9 kg. Next, multiply the weight in kg by the prescribed dose of 1mg/kg. This gives 83.9 * 1 = 83.9 mg. Round this to the nearest tenth to get 83.3 mg. The correct answer is 83.3 mg because it accurately calculates the dose based on the client's weight and the prescribed dosage. Other choices are incorrect as they either do not consider the weight conversion or do not correctly calculate the dosage according to the prescription.
A nurse is providing discharge teaching to the parent of child who is prescribed diphenhydramine 75 mg elixir every 4 hr as needed. The amount available is diphenhydramine elixir 25 mg/2.5mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 7.5 mL
Rationale: Correct Answer: 7.5 mL
Rationale: To find the mL per dose, divide the prescribed dose (75 mg) by the concentration of the elixir (25 mg/2.5mL):
75 mg ÷ 25 mg/2.5mL = 75 mg ÷ 10 mg/mL = 7.5 mL.
Summary:
A) Incorrect, not the correct calculation.
B) Incorrect, not the correct calculation.
C) Incorrect, not the correct calculation.
D) Incorrect, not the correct calculation.
E) Incorrect, not the correct calculation.
F) Incorrect, not the correct calculation.
G) Incorrect, not the correct calculation.