The doctor orders 250 mg of ampicillin for your patient. A 1 gram vial of powdered ampicillin is available. The label says to add 4.5 mL of sterile water t) - (round the answer to the nearest yield 1 g/10 mL. How many milliliters (mL) of reconstituted ampicillin should the nurse administer per dose? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)
The Correct Answer is ["2.5"]
Determine the desired dose.
The doctor orders 250 mg of ampicillin.
Calculate the available dose per mL.
The label says to add 4.5 mL of sterile water to yield 1 g/10 mL. This means that each mL of the reconstituted solution contains 1 g / 10 mL = 0.1 g = 100 mg of ampicillin.
Calculate the volume to be administered.
Volume = Desired dose (mg) / Concentration (mg/mL) = 250 mg / 100 mg/mL = 2.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Determine the desired dose.
The nurse needs to administer 3,800 units of heparin.
Calculate the available dose per mL.
The available heparin is 5,000 units/mL.
Calculate the volume to be administered.
Volume = Desired dose (units) / Concentration (units/mL) = 3,800 units / 5,000 units/mL = 0.76 mL
Round the volume to the nearest tenth.
Volume = 0.8 mL
Correct Answer is ["688"]
Explanation
Convert the patient's weight to kg.
The patient weighs 198 lb.
1 lb is approximately equal to 0.45 kg.
Patient's weight in kg = 198 lb * 0.45 kg/lb = 89.1 kg
Calculate the total daily dose.
Total daily dose = 15 mg/kg/day * 89.1 kg = 1336.5 mg/day
Calculate the dose per administration.
The dose is divided equally every 12 hours, so we divide the total daily dose by 2.
Dose per administration = 1336.5 mg/day / 2 = 668.25 mg
Round the dose to the nearest whole number.
Dose per administration = 668 mg
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