The health-care provider prescribes trimethoprim-sulfamethoxazole (Bactrim-DS Oral Suspension) 120 mg BID for a child with bronchitis. The Bactrim bottle is labeled "200 mg/5ml." How many ml should the nurse administer at each dose? (Enter the numeric value, whole number, only.)
The Correct Answer is ["3"]
Calculating the Trimethoprim-Sulfamethoxazole Dose
Problem: Administer 120 mg of Bactrim-DS Oral Suspension. The available concentration is 200 mg/5 mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (120 mg) and the concentration of the medication (200 mg/5 mL).
Proportion:
x mL / 120 mg = 5 mL / 200 mg
Cross-multiply:
200x = 600
Solve for x:
x = 600 / 200
x = 3
Answer: The nurse should administer 3 mL of Bactrim-DS Oral Suspension per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
To calculate the infusion time, we'll use the following formula:
Infusion Time (hours) = Total Volume (mL) / Infusion Rate (mL/hour)
Plugging in the given values:
Infusion Time = 1000 mL / 75 mL/hour
Calculating the result:
Infusion Time ≈ 13.33 hours
Converting hours to minutes:
0.33 hours x 60 minutes/hour ≈ 20 minutes
Therefore, the infusion will be completed approximately 13 hours and 20 minutes after it started at 0300.
Adding 13 hours and 20 minutes to 0300:
0300 + 13 hours + 20 minutes = 1620
So, the correct answer is C. 1620.
Correct Answer is ["160"]
Explanation
Calculate the average hourly NGT output:
Average Hourly NGT Output = Total NGT Output / Number of Hours
Average Hourly NGT Output = 240 mL / 4 hours
Average Hourly NGT Output = 60 mL/hour
Adjust the IV rate:
New IV Rate = Current IV Rate + Average Hourly NGT Output
New IV Rate = 100 mL/hour + 60 mL/hour
New IV Rate = 160 mL/hour
Therefore, the nurse should regulate the IV to deliver 160 mL/hour to replace the fluid loss.
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