A nurse is preparing to administer lamivudine 150 mg PO BID. Available is lamivudine 100 mg tablets. How many tablets should the nurse administer per dose? (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"]
Determine the desired dose per administration.
The nurse needs to administer 150 mg of lamivudine per dose.
Calculate the number of tablets per administration.
Each tablet contains 100 mg of lamivudine.
Number of tablets = Desired dose (mg) / Tablet strength (mg) = 150 mg / 100 mg/tablet = 1.5 tablets.
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Related Questions
Correct Answer is ["50"]
Explanation
Calculate the infusion rate in mL/min.
The infusion rate is 150 mL/hr.
To convert this to mL/min, we divide by 60: 150 mL/hr ÷ 60 min/hr = 2.5 mL/min.
Apply the drop factor to find the drip rate in gtt/min.
Drop factor of the tubing is 20 gtt/mL.
Drip rate = Infusion rate (mL/min) x Drop factor (gtt/mL) = 2.5 mL/min x 20 gtt/mL = 50 gtt/min
Correct Answer is ["83.3"]
Explanation
Convert the patient's weight to kg.
The patient weighs 185 lb.
1 lb is approximately equal to 0.45 kg.
Patient's weight in kg = 185 lb x 0.45 kg/lb = 83.25 kg
Calculate the dose per administration.
The prescribed dose is 1 mg/kg/dose.
Dose per administration = 1 mg/kg/dose x 83.25 kg = 83.25 mg/dose
Round the dose to the nearest tenth.
Dose per administration = 83.3 mg
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