A nurse is preparing to administer heparin 10,000 units subcutaneous every 8 hr. Available is heparin injection 20,000 units/mL. 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.)
The Correct Answer is ["0.5"]
1. Heparin Dosage and Concentration:
Heparin dosage per dose: 10,000 units
Heparin concentration: 20,000 units/mL (available injection)
2. Volume Calculation:
We can use the following formula to find the volume to administer:
Volume (mL) = Dosage (units) / Concentration (units/mL)
Volume (mL) = 10,000 units / 20,000 units/mL
3. Rounding the Answer:
Round the calculated volume to the nearest tenth of a milliliter.
Volume (mL) = 0.5 mL (rounded to one decimal place)
Therefore, the nurse should administer 0.5 mL of heparin injection per dose.
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Related Questions
Correct Answer is ["1.9"]
Explanation
Here’s the calculation for your reference:
To find out how many mL the nurse should administer, we can use the formula:
Volume to administer= Dose required/Concentration available
Substituting the given values:
Volume to administer=187mg/100mg/mL =1.87mL
However, the question asks to round the answer to the nearest tenth. So, the nurse should administer 1.9 mL of Isoniazid
Correct Answer is ["5.3"]
Explanation
To calculate the correct dose of clindamycin, we need to follow these steps:
-
Convert pounds to kilograms:
- 53 lb * 0.4536 kg/lb = 24 kg
-
Calculate the daily dose in milligrams:
- 10 mg/kg/day * 24 kg = 240 mg/day
-
Calculate the dose per administration:
- Since the medication is divided into three doses, divide the daily dose by 3:
- 240 mg/day / 3 = 80 mg/dose
- Since the medication is divided into three doses, divide the daily dose by 3:
-
Determine the volume needed from the available concentration:
- 80 mg * (5 mL / 75 mg) = 5.33 mL
Therefore, the nurse should administer 5.3 mL of clindamycin per dose.
Answer: 5.3 mL
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