A nurse is preparing to administer amoxicillin 300 mg PO. The amount lable is amoxicillin oral solution 250 mg/5 mL. How many mL should the nurse administer? (Hound the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
10 mL
6 mL
5 ml
7 mL
The Correct Answer is B
Given:
Ordered dose of amoxicillin: 300 mg
Concentration of amoxicillin oral solution: 250 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
300 mg / Volume = 250 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 300 mg / (250 mg/5 mL)
Volume = 300 mg x (5 mL / 250 mg)
Volume = 6 mL
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Given:
Ordered dose of amoxicillin: 300 mg
Concentration of amoxicillin oral solution: 250 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
300 mg / Volume = 250 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 300 mg / (250 mg/5 mL)
Volume = 300 mg x (5 mL / 250 mg)
Volume = 6 mL
Correct Answer is D
Explanation
Convert ounces to millilitres (1 oz = 29.5735 mL):
6oz×29.5735mL/oz=177.441mL6
Calculate the frequency of doses per day:
The patient receives a dose every 4 hours, so in 24 hours, the number of doses is:
24hours/4hours/dose=6doses
Calculate the total volume for all doses:
177.441mL/dose×6doses=1064.646mL
Rounding to the nearest whole number=1080 mL
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