A client on the palliative care unit is receiving midazolam 3 mg SUBQ every 2 hours PRN for terminal agitation and intractable hiccups. The medication iS available in a 5 mL ampoule labeled. "2 mg/mL." How many mL should the nurse administer for each dose? (Enter the numerical value only.)
The Correct Answer is ["1.5"]
Given:
Ordered dose of Midazolam: 3 mg SUBQ every 2 hours PRN
Concentration of Midazolam: 2 mg/mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
3 mg / Volume = 2 mg/mL
Step 3: Solve for the unknown volume:
Volume = 3 mg / (2 mg/mL)
Volume = 3 mg x (1 mL / 2 mg)
Volume = 1.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.9"]
Explanation
Given:
Ordered dose of Lorazepam: 50 mcg/kg
Patient weight: 74 kg
Concentration of Lorazepam: 2 mg/mL
Step 1: Calculate the total dose of Lorazepam:
Total dose (mcg) = Ordered dose (mcg/kg) x Patient weight (kg)
Total dose (mcg) = 50 mcg/kg x 74 kg
Total dose (mcg) = 3700 mcg
Step 2: Convert mcg to mg:
Total dose (mg) = Total dose (mcg) / 1000 mcg/mg
Total dose (mg) = 3700 mcg / 1000 mcg/mg
Total dose (mg) = 3.7 mg
Step 3: Calculate the volume to be administered:
Volume (mL) = Total dose (mg) / Concentration (mg/mL)
Volume (mL) = 3.7 mg / 2 mg/mL
Volume (mL) = 1.85 mL
Step 4: Round to the nearest tenth:
Volume (mL) ≈ 1.9 mL
Correct Answer is ["9"]
Explanation
Given:
Ordered dose of insulin: 0.1 units/kg
Patient weight: 200 pounds
Step 1: Convert patient weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Patient weight in kg = 200 lbs x 0.453592 kg/lb = 90.718 kg
Step 2: Calculate the total dose of insulin:
Total dose (units) = Ordered dose (units/kg) x Patient weight (kg)
Total dose (units) = 0.1 units/kg x 90.718 kg
Total dose (units) = 9.0718 units
Step 3: Round to the nearest whole number:
Total dose (units) ≈ 9 units
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