A nurse is preparing to administer midazolam 0.03 mg/kg IM to a client who weighs 110 lb. Available is midazolam 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.5"]
Understanding the Problem
Order: Midazolam 0.03 mg/kg IM
Client Weight: 110 lbs
Available Solution: Midazolam 1 mg/mL
Desired Dose: mL to administer
Step 1: Convert Client Weight to Kilograms (kg)
1 kg = 2.2 lbs
Client Weight in kg: 110 lbs / 2.2 lbs/kg = 50 kg
Step 2: Calculate the Total Dose
Ordered Dose: 0.03 mg/kg
Client Weight: 50 kg
Total Dose: 0.03 mg/kg x 50 kg = 1.5 mg
Step 3: Calculate the Volume to Administer
Total Dose: 1.5 mg
Concentration: 1 mg/mL
Volume: 1.5 mg / 1 mg/mL = 1.5 mL
Step 4: Round to the Nearest Tenth
The calculated volume is 1.5 mL, which is already to the nearest tenth.
Answer: 1.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Identify the Desired Dose and Available Concentration:
Desired Dose: 10 mg of verapamil
Available Concentration: 5 mg/2 mL
Simplify the Available Concentration:
To make the calculation easier, find the concentration per 1 mL: 5 mg / 2 mL = 2.5 mg/mL (This means there are 2.5 mg of verapamil in every 1 mL of solution)
Set up the Calculation:
We need to find the volume (in mL) that contains the desired dose of 10 mg.
We can use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 10 mg / 2.5 mg/mL
Volume (mL) = 4 mL
Round to the Nearest Whole Number (if necessary):
4 mL
Correct Answer is ["35"]
Explanation
Understanding the Problem
Order: Regular insulin 3.5 units/hr
Available Solution: Regular insulin 100 units in 1000 mL of 0.45% sodium chloride
Desired Rate: mL/hr
Step 1: Determine the Concentration of the Insulin Solution
Available Insulin: 100 units
Solution Volume: 1000 mL
Concentration: 100 units / 1000 mL = 0.1 units/mL
Step 2: Calculate the Infusion Rate in mL/hr
Ordered Dose: 3.5 units/hr
Concentration: 0.1 units/mL
Infusion Rate: 3.5 units/hr / 0.1 units/mL = 35 mL/hr
Step 3: Round to the Nearest Whole Number
The calculated rate is 35 mL/hr, which is already a whole number.
Answer: 35 mL/hr
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