A nurse is preparing to administer heparin 17,500 units subcutaneous every 12 hr. Available is heparin injection 20,000 units/mL. How many mL should the nurse administer per dose?
(Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.88"]
Step 1 is to calculate the volume of heparin to be administered. The calculation is as follows: 17,500 units ÷ (20,000 units/mL) = 0.875 mL.
So, the correct answer is 0.88 mL (rounded to the nearest hundredth).
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Related Questions
Correct Answer is ["2.1"]
Explanation
First, we need to calculate the total daily dose of tobramycin for the client. The total daily dose is calculated as follows:
Total daily dose = Dose per kg per day x Weight Total daily dose = 3 mg/kg/day x 85 kg Total daily dose = 255 mg/day
Since the total daily dose is divided into three doses, each dose will be:
Each dose = Total daily dose / Number of doses Each dose = 255 mg / 3 Each dose = 85 mg
Now, we need to convert this dose into mL. We know that we have tobramycin 40 mg/mL, so:
Volume to administer = Each dose / Concentration Volume to administer = 85 mg / 40 mg/mL Volume to administer = 2.125 mL
Rounding this to the nearest tenth, we get 2.1 mL.
Correct Answer is ["68"]
Explanation
Step 1 is to convert the client’s weight from pounds to kilograms, as the dosage is prescribed in mg/kg. Given that 1 kg = 2.2 lb, we calculate:
99 lb ÷ 2.2 = 45 kg
Rounding to the nearest whole number, the client’s weight is 45 kg.
Step 2 is to determine the total dosage of acetaminophen required. The prescribed dosage is 15 mg/kg, so we calculate:
15 mg/kg × 45 kg = 675 mg
Step 3 is to determine the volume to administer. The available concentration of acetaminophen is 1,000 mg/100 mL, which simplifies to 10 mg/mL. So, we divide:
675 mg ÷ 10 mg/mL = 67.5 mL
Rounding to the nearest whole number, the correct amount to administer is 68 mL.
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