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 ["63"]
Explanation
Step-by-step calculation:
IV rate= Total volume/Time (hours)
250/4 =62.5 mL/hr
Round the answer off: 63L/hr
Correct Answer is ["3.5"]
Explanation
Identify the given information:
Dose of digoxin: 7.5 mcg/kg/day
Weight of the child: 52 lb
Concentration of digoxin elixir: 50 mcg/mL
Convert the child's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total daily dose of digoxin in mcg:
Total daily dose = Dose/kg/day x Weight (kg)
Substitute the values:
Total daily dose = 7.5 mcg/kg/day x 52 lb x (0.453592 kg/1 lb)
Total daily dose ≈ 177.56 mcg
Calculate the dose per dose (every 24 hours):
Dose per dose = Total daily dose / 1
Substitute the values:
Dose per dose = 177.56 mcg / 1
Dose per dose ≈ 177.56 mcg
Calculate the volume of digoxin elixir to be administered:
Volume = Dose per dose (mcg) / Concentration (mcg/mL)
Substitute the values:
Volume = 177.56 mcg / 50 mcg/mL
Volume ≈ 3.55 mL
Round the answer to the nearest tenth:
Volume ≈ 3.5 mL
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