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 ["6.5"]
Explanation
Convert the Client's Weight from Pounds to Kilograms:
1 kg = 2.205 lbs
Weight in kg = 143 lbs / 2.205 lbs/kg
Weight in kg ≈ 64.85 kg
Calculate the Total Dose of Cyclosporine Needed:
Dose = 5 mg/kg x 64.85 kg
Dose ≈ 324.25 mg
Calculate the Volume of Cyclosporine to Administer:
Available concentration = 50 mg/mL
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
Volume (mL) = 324.25 mg / 50 mg/mL
Volume (mL) ≈ 6.485 mL
Round to the Nearest Tenth:
6.5 mL
Correct Answer is ["6"]
Explanation
Order: Dopamine 2 mcg/kg/min
Client Weight: 176 lbs
Available Solution: Dopamine 400 mg in 250 mL of D5W
Desired Rate: mL/hr
Convert Client Weight to Kilograms (kg)
1 kg = 2.2 lbs
Client Weight in kg: 176 lbs / 2.2 lbs/kg = 80 kg
Step 2: Calculate the Dopamine Dose per Minute
Dose: 2 mcg/kg/min
Client Weight: 80 kg
Total Dose per Minute: 2 mcg/kg/min x 80 kg = 160 mcg/min
Step 3: Convert Dopamine Dose to Milligrams (mg)
1 mg = 1000 mcg
Dose in mg/min: 160 mcg/min / 1000 mcg/mg = 0.16 mg/min
Step 4:Calculate the Dopamine Dose per Hour
Dose in mg/min: 0.16 mg/min
Minutes in an Hour: 60 min
Dose in mg/hr: 0.16 mg/min x 60 min/hr = 9.6 mg/hr
Step 5: Determine the Concentration of the Dopamine Solution
Available Dopamine: 400 mg
Solution Volume: 250 mL
Concentration: 400 mg / 250 mL = 1.6 mg/mL
Step 6: Calculate the Infusion Rate in mL/hr
Dose in mg/hr: 9.6 mg/hr
Concentration: 1.6 mg/mL
Infusion Rate: 9.6 mg/hr / 1.6 mg/mL = 6 mL/hr
Step 7: Round to the Nearest Whole Number
The calculated rate is 6 mL/hr, which is already a whole number.
Answer: 6 mL/hr
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