Deck 14: Alternative Dosage Calculation Methods: Ratio-Proportion and Dimensional Analysis

Question 1

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many milligrams should the child receive per day?

Answer 1

per day, 30 kg 30 mg/kg = 900 mg

Question 2

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many kilograms does the child weigh?

Answer 2

X = 30 kg

Question 3

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many milligrams should the child receive per dose?

Answer 3

q. 8h = every 8 hours, which is given 3 times per day 300 mg per dose

Question 4

Use the following information about a child and his order to compute answers.
The recommended dosage of Rocephin is 50 to 100 mg/kg/day divided into two equal doses. The physician has ordered Rocephin 200 mg IM b.i.d. for a child who weighs 5000 g. The Rocephin vial contains 1 g of medication that must be reconstituted with 3.6 mL of diluent to yield 1 g/4 mL.
Compute the recommended minimum and maximum amount of milligrams that the child should receive per day.

Question 5

Is the order within the recommended range? (yes/no) __________
If so, compute the number of milliliters of Rocephin that should be administered per dose. __________ mL.

Question 6

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many kilograms does this child weigh?

Question 7

Given: Compute the requested information. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers.
The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors.
Use the following information about a child and his order to compute answers.
A pediatrician has ordered ampicillin 50 mg/kg/day p.o. divided q.6h for a child who weighs 44 lb.
How many teaspoons should the child's parent administer per dose? __________ t

Question 8

How many teaspoonfuls of amoxicillin should be given per q.8h administration? __________ t

Question 9

The following order was written for a child weighing 66 lb.
Order: Morphine 0.2 mg/kg p.o. q. 6h p.r.n, pain.
How many kilograms does this child weigh?

Question 10

Given: Compute the requested information. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers.
The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors.
Use the following information about a child and his order to compute answers.
A pediatrician has ordered ampicillin 50 mg/kg/day p.o. divided q.6h for a child who weighs 44 lb.
How many milligrams should the child receive per day? __________ mg

Question 11

The pediatrician has ordered amoxicillin 125 mg p.o. q.8h for Mandy.
The available supply of amoxicillin is 125 mg/5 mL.

Question 12

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many milligrams of Demerol should the child receive per dose?

Question 13

Use the following information about a child and her order to compute answers.
Mandy, a child who weighs 15 kilograms, is to be given amoxicillin. The recommended dosage of amoxicillin for children is 20 to 40 mg/kg/day p.o. in equally divided doses administered q.8h.
What is the recommended range of milligrams of medication for this child per day?

Question 14

Given: Compute the requested information. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers.
The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors.
Use the following information about a child and his order to compute answers.
A pediatrician has ordered ampicillin 50 mg/kg/day p.o. divided q.6h for a child who weighs 44 lb.
How many milligrams should the child receive per dose? __________ mg

Question 15

Use the following information about a child and her order to compute answers.
Mandy, a child who weighs 15 kilograms, is to be given amoxicillin. The recommended dosage of amoxicillin for children is 20 to 40 mg/kg/day p.o. in equally divided doses administered q.8h.
What is the recommended range of milligrams of medication for this child per q.8h dose?

Question 16

Given: Compute the requested information. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers.
The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors.
Use the following information about a child and his order to compute answers.
A pediatrician has ordered ampicillin 50 mg/kg/day p.o. divided q.6h for a child who weighs 44 lb.
How many kilograms does the child weigh? __________ kg

Question 17

Given: Compute the requested information. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers.
The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors.
Use the following information about a child and his order to compute answers.
A pediatrician has ordered ampicillin 50 mg/kg/day p.o. divided q.6h for a child who weighs 44 lb.
The pharmacy has supplied reconstituted ampicillin, with a supply dosage of 500 mg/5 mL. How many milliliters should be given per q.6h dose? __________ mL

Question 18

Use the following information about a child and his order to compute answers.
The recommended dosage of Rocephin is 50 to 100 mg/kg/day divided into two equal doses. The physician has ordered Rocephin 200 mg IM b.i.d. for a child who weighs 5000 g. The Rocephin vial contains 1 g of medication that must be reconstituted with 3.6 mL of diluent to yield 1 g/4 mL.
Compute the recommended minimum and maximum amount of milligrams that the child should receive per dose.

Question 19

A pediatrician ordered Demerol 1 mg/kg/day p.o., divided q.4h p.r.n. for a child who weighs 33 lb.
How many milligrams of Demerol should this child receive per day?

Question 20

Using the following information about a child and her medication order to complete answers.
A 6-year-old child weighing 25 kg has a staph infection and the provider has ordered penicillin. The recommended dose of penicillin for children is 25 to 50 mg/kg/day p.o. in equally divided doses administered q.6h.
What is the recommended range of milligrams of medication for this child per day?
Minimum ____________ mg Maximum ________________mg

Question 21

What action should be taken by the nurse if a drug order is unsafe?

Question 22

The following order was written for a child weighing 66 lb.
Order: Morphine 0.2 mg/kg p.o. q. 6h p.r.n, pain.
How many milligrams should the child receive per day?

Question 23

The recommended dose of this medication for this child is 0.2 mg-5 mg/kg per q. 4-6 h. Is the dose mentioned above in the recommended range and therefore safe to administer?

Question 24

The pediatrician orders Dicloxacillin 62.5 mg p.o. q. 6h for a child with a staph infection. The child weighs 77 lb. The drug reference recommends a dose of 12.5-50 mg/kg in divided doses of q. 6h for a child 40 kg, with a maximum of 4 g per day.
How many kilograms does this child weigh?

Question 25

The following order was written for a child weighing 66 lb.
Order: Morphine 0.2 mg/kg p.o. q. 6h p.r.n, pain.
How many milligrams should the child receive per dose?

Question 26

The pediatrician orders Dicloxacillin 62.5 mg p.o. q. 6h for a child with a staph infection. The child weighs 77 lb. The drug reference recommends a dose of 12.5-50 mg/kg in divided doses of q. 6h for a child 40 kg, with a maximum of 4 g per day.
Calculate the maximum recommended dose.

Question 27

Is this order within the recommended range for this child?

Question 28

The pediatrician orders Dicloxacillin 62.5 mg p.o. q. 6h for a child with a staph infection. The child weighs 77 lb. The drug reference recommends a dose of 12.5-50 mg/kg in divided doses of q. 6h for a child 40 kg, with a maximum of 4 g per day.
Calculate the minimum recommended dosage.