Question

A nurse is providing discharge teaching to the parent of a child who is prescribed diphenhydramine 25 mg elixir every 4 hr as needed. The amount available is diphenhydramine elixir 12.5 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer 1

Correct Answers:

10

Rationale :

🔷 Step 1: Identify the prescribed dose

Prescribed dose = 25 mg

🔷 Step 2: Identify the available concentration

Available dose = 12.5 mg per 5 mL

🔷 Step 3: Set up the proportion

25 mg ÷ 12.5 mg = 2

🔷 Step 4: Apply the proportion to volume

2 × 5 mL = 10 mL

🔷 Step 5: Round if needed

10 mL rounded to the nearest tenth = 10 mL

Final Answer:

10 mL

Distractor Analysis :

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Answer 2

Correct Answers:

50

Rationale :

🔷 Step 1: Identify the prescribed dose

Prescribed dose = 250 mg

🔷 Step 2: Identify the available concentration

Available dose = 25 mg per 5 mL

🔷 Step 3: Determine how many times the available dose fits into the prescribed dose

250 mg ÷ 25 mg = 10

🔷 Step 4: Calculate the total volume to administer

10 × 5 mL = 50 mL

🔷 Step 5: Round if needed

50 mL rounded to the nearest whole number = 50 mL

Final Answer:

50 mL

Distractor Analysis :

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Answer 3

Correct Answers:

0.5

Rationale :

🔷 Step 1: Identify the prescribed dose

Prescribed dose = 125 mcg

🔷 Step 2: Convert micrograms to milligrams

1 mg = 1000 mcg

125 mcg ÷ 1000 = 0.125 mg

🔷 Step 3: Identify the available dose

Available dose = 0.25 mg per tablet

🔷 Step 4: Calculate the number of tablets

0.125 mg ÷ 0.25 mg = 0.5 tablet

🔷 Step 5: Round if needed

0.5 rounded to the nearest tenth = 0.5

Final Answer:

0.5 tablet

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Answer 4

Correct Answers:

3.3

Rationale :

🔷 Step 1: Convert the infant’s weight from pounds to kilograms

12 lb ÷ 2.2 = 5.45 kg

🔷 Step 2: Calculate the prescribed dose in mg

15 mg × 5.45 kg = 81.75 mg per dose

🔷 Step 3: Identify the available concentration

Available dose = 125 mg per 5 mL

🔷 Step 4: Set up the calculation to find mL needed

81.75 mg ÷ 125 mg = 0.654

🔷 Step 5: Calculate the volume to administer

0.654 × 5 mL = 3.27 mL

🔷 Step 6: Round to the nearest tenth

3.27 mL rounded to the nearest tenth = 3.3 mL

Final Answer:

3.3 mL

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Answer 5

Correct Answers:

145

Rationale :

🔷 Step 1: Convert the client’s weight from pounds to kilograms

160 lb ÷ 2.2 = 72.7 kg

🔷 Step 2: Identify the prescribed dose per kilogram

Prescribed dose = 2 mg/kg

🔷 Step 3: Calculate the total dose per administration

2 mg × 72.7 kg = 145.4 mg

🔷 Step 4: Round to the nearest whole number

145.4 mg rounded to the nearest whole number = 145 mg

Final Answer:

145 mg

Distractor Analysis :

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Answer 6

Correct Answers:

43.2

Rationale :

🔷 Step 1: Convert the client’s weight from pounds to kilograms

95 lb ÷ 2.2 = 43.18 kg

🔷 Step 2: Identify the prescribed dose per kilogram

Prescribed dose = 1 mg/kg

🔷 Step 3: Calculate the dose per administration

1 mg × 43.18 kg = 43.18 mg

🔷 Step 4: Round to the nearest tenth

43.18 mg rounded to the nearest tenth = 43.2 mg

Final Answer:

43.2 mg

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Answer 7

Correct Answers:

2

Rationale :

🔷 Step 1: Identify the prescribed dose

Prescribed dose = 250 mg

🔷 Step 2: Identify the available dose

Available dose = 125 mg per tablet

🔷 Step 3: Calculate the number of tablets needed

250 mg ÷ 125 mg = 2

🔷 Step 4: Round if needed

2 rounded to the nearest whole number = 2

Final Answer:

2 tablets

Distractor Analysis :

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Answer 8

Correct Answers:

84.1

Rationale :

🔷 Step 1: Convert the client’s weight from pounds to kilograms

185 lb ÷ 2.2 = 84.1 kg

🔷 Step 2: Identify the prescribed dose per kilogram

Prescribed dose = 1 mg/kg

🔷 Step 3: Calculate the dose per administration

1 mg × 84.1 kg = 84.1 mg

🔷 Step 4: Round to the nearest tenth

84.1 mg rounded to the nearest tenth = 84.1 mg

Final Answer:

84.1 mg

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Answer 9

Correct Answers:

2

Rationale :

🔷 Step 1: Identify the prescribed dose

Prescribed dose = 20 mEq

🔷 Step 2: Identify the available concentration

Available dose = 10 mEq per 1 mL

🔷 Step 3: Set up the calculation

20 mEq ÷ 10 mEq = 2

🔷 Step 4: Determine the volume to administer

2 × 1 mL = 2 mL

🔷 Step 5: Round if needed

2 mL rounded to the nearest whole number = 2 mL

Final Answer:

2 mL

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Answer 10

Correct Answers:

42 units

Rationale :

🔷 Step 1: Identify the dose of regular insulin

Regular insulin = 14 units

🔷 Step 2: Identify the dose of NPH insulin

NPH insulin = 28 units

🔷 Step 3: Add the two insulin doses together

14 units + 28 units = 42 units

🔷 Step 4: Determine the total dose to prepare

Total insulin dose = 42 units

Final Answer:

42 units

Distractor Analysis :

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QLexNursing

5 :
A nurse is preparing to administer gentamycin 2 mg/kg PO every 8 hours to a client who weighs 160 lbs. What is the dose the nurse should expect to administer? Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 :
A nurse is preparing to administer amoxicillin 250 mg PO every 8 hr. The amount available is amoxicillin 125 mg tablets. How many tablets should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 :
A nurse Is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?

QLexNursing

5 : A nurse is preparing to administer gentamycin 2 mg/kg PO every 8 hours to a client who weighs 160 lbs. What is the dose the nurse should expect to administer? Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 : A nurse is preparing to administer amoxicillin 250 mg PO every 8 hr. The amount available is amoxicillin 125 mg tablets. How many tablets should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 : A nurse Is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?

5 :
A nurse is preparing to administer gentamycin 2 mg/kg PO every 8 hours to a client who weighs 160 lbs. What is the dose the nurse should expect to administer? Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

7 :
A nurse is preparing to administer amoxicillin 250 mg PO every 8 hr. The amount available is amoxicillin 125 mg tablets. How many tablets should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

10 :
A nurse Is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?