A nurse is preparing to administer penicillinG benzathine 200,000 units IM to a school-age child. Available is penicillinG benzathine injection 600,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.3"]
Given:
Desired dose: Penicillin G benzathine 200,000 units IM
Available concentration: Penicillin G benzathine injection 600,000 units/mL
To find:
Volume to administer (in mL)
Step 1: Set up the proportion
We can use the following proportion to solve the problem:
(Desired dose) / (Available concentration) = Volume to administer
Step 2: Substitute the values
Plugging in the given values, we get:
(200,000 units) / (600,000 units/mL) = Volume to administer
Step 3: Simplify
To simplify, we can invert the denominator and multiply:
(200,000 units) * (1 mL / 600,000 units) = Volume to administer
The "units" cancel out, leaving us with:
(200,000 * 1 mL) / 600,000 = Volume to administer
Step 4: Calculate
Performing the multiplication and division, we get:
200,000 mL / 600,000 = Volume to administer
0.33 mL = Volume to administer
Step 5: Round to the nearest whole number
Since the question asks for the volume rounded to the nearest whole number, we round 0.3.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["3.9"]
Explanation
Step-by-Step Solution:
Convert the toddler's weight from pounds to kilograms.
1 pound= 0.453592 kilograms.
26 pounds = 26 x 0.453592 = 11.793592 kilograms.
Calculate the total daily dose of prednisolone.
The prescribed dose is 2 mg/kg/day.
The toddler weighs 11.793592 kg.
Total daily dose = 2 mg/kg/day x 11.793592 kg = 23.587184 mg/day.
Determine the dose per administration.
Total daily dose is divided into two equal doses (every 12 hours).
The dose per administration = 23.587184 mg/day / 2 = 11.793592 mg per dose.
Calculate the volume of prednisolone syrup to administer.
The available prednisolone syrup is 15 mg/5 ml.
To find the volume, we can set up a proportion:
15 mg / 5 ml = 11.793592 mg / x ml
Cross-multiplying:
15x = 5 x 11.793592
Solving for x:
x = (5 x 11.793592) / 15 = 3.931197 ml
Round the answer to the nearest tenth.
3.9 mL
Correct Answer is ["63"]
Explanation
Step-by-step calculation:
IV rate= Total volume/Time (hours)
250/4 =62.5 mL/hr
Round the answer off: 63L/hr
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