ATI RN Dosage Calculation – 35 Questions Study Guide

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ATI RN Dosage calculation

Total Questions : 35

Showing 35 questions

Question 1:

A nurse is preparing to administer lactated Ringer's 250 mL IV to infuse over 15
min.

The nurse should set the IV pump to deliver how many mL/hr? (Round the
answer to the nearest whole number.

Use a leading zero if it applies.

Do not use a trailing zero.). mL/hr.


Explanation
Correct Answer: 1000

Step 1 is to calculate the total volume to be infused in mL/hr. This is done by dividing
the total volume (250 mL) by the time in hours (15 min ÷ 60 min/hr). So, 250 mL ÷ (15
min ÷ 60 min/hr) = 1000 mL/hr.

So, the correct answer is 1000 mL/hr.




A




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Question 2:

A nurse is preparing to administer cefazolin 1g intermittent IV bolus in 0.9%
sodium chloride 250 mL over 30 min.

The drop factor on the manual IV tubing is 10 gtt/mL. The nurse should set the
manual IV flow rate to deliver how many gtt/min? (Round the answer to the
nearest whole number.

Use a leading zero if it applies.

Do not use a trailing zero.). gtt/min.


Explanation
Correct Answer: 83

Step 1 is to calculate the total volume to be infused in mL/min. This is done by dividing
the total volume (250 mL) by the time in minutes (30 min). So, 250 mL ÷ 30 min = 8.33
mL/min. Step 2 is to convert mL/min to gtt/min using the drop factor. So, (8.33 mL/min)
× (10 gtt/mL) = 83.3 gtt/min. Round off to the nearest whole number, the correct
answer is 83 gtt/min.




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Question 3:

A nurse is preparing to reconstitute ampicillin for IM administration to a client
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A nurse is preparing to reconstitute ampicillin for IM administration to a client
who has urethritis.

Which of the following information should the nurse interpret from the
medication label? (Refer to the medication label below.). *This vial contains
ampicillin sodium equivalent to 1 gram ampicillin.

For IM use, add 3.5 ml diluent (read accompanying insert). Resulting solution
contains 250 mg ampicillin per mL. Use solution within 1 hour.

Usage dosage: Adults-250 to 500 mg IM qóh. READ ACCOMPANYING INSERT.

T tor. detailed indications, IM or IV dosage, and precautions.

Store the dry powder at 20° to 25° C (68° to 77° F) (See USP]). NDC 1234-1234-10.
Ampicillin for Injection, UŠP. 1 gram per vial.

For IM or IV Use.

End of label.

A. Instill 5 mL of diluent to the vial for reconstitution.
B. After reconstitution, the vial will contain a total of 500 mg of medication.
C. Administer the medication within 1 hr of reconstitution.
D. This medication can only be administered IM. .


Explanation
Correct Answer: C

The label states to add 3.5 mL of diluent for reconstitution, not 5 mL. So, choice A is
incorrect.

After reconstitution, the vial will contain 1 gram of medication, not 500 mg. So, choice
B is incorrect.

The label does state to use the solution within 1 hour of reconstitution. So, choice C is
correct.




The label states the medication can be used for IM or IV, not only IM. So, choice D is
incorrect.




A
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Question 4:

A nurse is preparing to administer ketorolac 30 mg IM to a client.

Available is ketorolac injection 15 mg/mL. How many mL should the nurse
administer? (Round the answer to the nearest whole number.

Use a leading zero if it applies.

Do not use a trailing zero.). mL.


Explanation
Correct Answer: 2 mL

Step 1 is to determine the amount of medication needed. The order is for 30 mg and
the available medication is 15 mg/mL. So, we calculate 30 mg ÷ 15 mg/mL = 2 mL. So
the correct answer is 2 mL.




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