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 ["165"]
Explanation
Convert the patient's weight to kg.
The patient weighs 245 lb.
1 lb is approximately equal to 0.45 kg.
Patient's weight in kg = 245 lb x 0.45 kg/lb = 110.25 kg
Calculate the dose per administration.
The prescribed dose is 1.5 mg/kg/dose.
Dose per administration = 1.5 mg/kg/dose x 110.25 kg = 165.375 mg/dose
Round the dose to the nearest whole number.
Dose per administration = 165 mg
Correct Answer is ["2"]
Explanation
Determine the dose per administration.
The total daily dose is 2 g, which is 2000 mg.
The dose is divided into two doses, so the dose per administration is 2000 mg / 2 = 1000 mg.
Calculate the number of tablets per administration.
Each tablet contains 500 mg of amoxicillin.
Number of tablets = Dose per administration (mg) / Tablet strength (mg) = 1000 mg / 500 mg/tablet = 2 tablets.
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