Prescribed is 500 mg of amoxicillin q6h p.o. for 10 days. The ...

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Prescribed is 500 mg of amoxicillin q6h p.o. for 10 days.
 
  The home health nurse checks the amount of suspension whose strength is 125 mg/2 mL and determines the client will need how many mL of suspension the client will need for the full course of amoxicillin therapy?
  a. 320 mL c. 200 mL
  b. 450 mL d. 100 mL

Question 2

An IV solution containing aminophylline 2 g in 1000 mL D5W is to be infused at 30 mg/hr. How many milliliters per hour should be administered?
 
  a. 10 mL/hr c. 30 mL/hr
  b. 15 mL/hr d. 60 mL/hr

[EAN94]

Answer to Question 1

ANS: A

Feedback
A Correct: 500 mg divided by 125 mg = 4, multiplied by 2 mL = 8 mL/dose X 4 doses/day = 32 mL/day X 10 days = 320 mL for full course of amoxicillin therapy.
B Incorrect: This is more volume than the client needs.
C Incorrect: This is less volume than the client needs.
D Incorrect: This is less volume than the client needs.

Answer to Question 2

ANS: B

Feedback
A Incorrect: This is 2/3 the prescribed dose.
B Correct: Convert the grams to mg = 2000 mg divided by 1000 mL = 0.5 mg/mL; multiply 0.5 mg/mL by 30mg/hr = 15 mL/hr.
C Incorrect: This is twice the prescribed dose.
D Incorrect: This is four times the prescribed dose.

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Gracias!

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