A client is receiving ketorolac IM 45 mg every 6 hours for postoperative pain. The available 2 mL vial is labeled, "Ketorolac IM 30 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.5"]
Given:
Ordered dose of Ketorolac: 45 mg IM every 6 hours
Concentration of Ketorolac: 30 mg/mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
45 mg / Volume = 30 mg/mL
Step 3: Solve for the unknown volume:
Volume = 45 mg / (30 mg/mL)
Volume = 45 mg x (1 mL / 30 mg)
Volume = 1.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["60"]
Explanation
Given:
Ordered dose: 25 mL PO every 6 hours PRN
Medication label: "Acetaminophen and Codeine Phosphate Oral Solution, USP: 120/12 mg per 5 mL"
Step 1: Determine the concentration of codeine in the solution:
Concentration of Codeine = Amount of Codeine / Volume of Solution
Concentration of Codeine = 12 mg / 5 mL
Concentration of Codeine = 2.4 mg/mL
Step 2: Calculate the amount of codeine per dose:
Amount of Codeine per Dose = Concentration of Codeine x Volume per Dose
Amount of Codeine per Dose = 2.4 mg/mL x 25 mL
Amount of Codeine per Dose = 60 mg
Correct Answer is ["0.5"]
Explanation
Given:
Ordered dose of interferon beta-1b: 0.125 mg
Vial strength: 0.3 mg
Reconstitution volume: 1.2 mL
Step 1: Determine the concentration of the reconstituted solution:
Concentration (mg/mL) = Total amount of medication (mg) / Volume of solution (mL)
Concentration (mg/mL) = 0.3 mg / 1.2 mL
Concentration (mg/mL) = 0.25 mg/mL
Step 2: Calculate the volume to be administered:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume (mL) = 0.125 mg / 0.25 mg/mL
Volume (mL) = 0.5 mL
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