Ati dosage calculation rn fundamentals proctored assessment exam 1

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Question 1: View

A nurse is preparing to administer cefazolin 250 mg IM to a client. Available is cefazolin powder for injection 500 mg vial. The nurse reconstitutes the powder with 2 mL of sterile water for a concentration of 225 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

The nurse can determine the volume of cefazolin to administer based on the available information:

1. Reconstituted concentration: The cefazolin is reconstituted to a concentration of 225 mg/mL.

2. Dosage required: The nurse needs to administer 250 mg of cefazolin.

3. Volume calculation: We can use the following formula to find the volume to administer:

Volume (mL) = Dosage (mg) / Concentration (mg/mL)

Volume (mL) = 250 mg / 225 mg/mL

4. Rounding the answer: Round the answer to the nearest tenth of a milliliter.

Volume (mL) = 1.1 mL (rounded to one decimal place)

Therefore, the nurse should administer 1.1 mL of the reconstituted cefazolin solution.

Question 2: View

A nurse is preparing to administer clindamycin 10 mg/kg/day PO in three divided doses to a child who weighs 53 lb. Available is clindamycin oral solution 75 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.)

Explanation

To calculate the correct dose of clindamycin, we need to follow these steps:

Convert pounds to kilograms:
- 53 lb * 0.4536 kg/lb = 24 kg
Calculate the daily dose in milligrams:
- 10 mg/kg/day * 24 kg = 240 mg/day
Calculate the dose per administration:
- Since the medication is divided into three doses, divide the daily dose by 3:
  - 240 mg/day / 3 = 80 mg/dose
Determine the volume needed from the available concentration:
- 80 mg * (5 mL / 75 mg) = 5.33 mL

Therefore, the nurse should administer 5.3 mL of clindamycin per dose.

Answer: 5.3 mL

Question 3: View

A nurse is preparing to administer methylprednisolone acetate 60 mg IM weekly. Available is methylprednisolone acetate suspension for injection 80 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

1. Dosage and Concentration:

Methylprednisolone acetate dosage: 60 mg

Methylprednisolone acetate concentration: 80 mg/mL (available suspension)

2. Volume Calculation:

We can use the following formula to find the volume to administer:

Volume (mL) = Dosage (mg) / Concentration (mg/mL)

Volume (mL) = 60 mg / 80 mg/mL

3. Rounding the Answer:

Round the answer to the nearest hundredth of a milliliter.

Volume (mL) = 0.75 mL (rounded to two decimal places)

Therefore, the nurse should administer 0.75 mL of methylprednisolone acetate suspension for injection.

Question 4: View

A nurse is preparing to administer methylprednisolone acetate 60 mg IM weekly. Available is methylprednisolone acetate suspension for Injection 80 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

The nurse should administer 0.75 mL of methylprednisolone acetate suspension for injection. Here's the breakdown:

Dosage: 60 mg of methylprednisolone acetate

Concentration: 80 mg/mL (milligrams per milliliter) of methylprednisolone acetate suspension

Volume calculation:

We can find the volume to administer using the following formula:

Volume (mL) = Dosage (mg) / Concentration (mg/mL)

Plugging in the values:

Volume (mL) = 60 mg / 80 mg/mL

Rounding the answer:

Round the calculated volume (0.75) to the nearest hundredth of a milliliter.

Therefore, the nurse should administer 0.75 mL of methylprednisolone acetate suspension for injection.

Question 5: View

A nurse is preparing to implement a client's prescription for hydrocortisone acetate cream, apply topically to facial rash twice a day. The nurse should ask the provider to add which of the following to the medication prescription?

A. Route B. Medication name C. Dose/strength D. Time/frequency

Explanation

A) Route: The prescription already specifies the route of administration as topical, which indicates that the cream should be applied to the skin. Therefore, there is no need to add the route to the prescription.

B) Medication name: The prescription clearly states the medication name, hydrocortisone acetate cream. The nurse does not need to ask for clarification or addition of the medication name.

C) Dose/strength: The prescription does not specify the strength or concentration of the hydrocortisone acetate cream, which is crucial for proper administration and effectiveness. Hydrocortisone creams come in various strengths, and using the incorrect strength could result in inadequate treatment or potential side effects.

D) Time/frequency: The prescription already includes the frequency, specifying that the cream should be applied twice a day. Thus, there is no need to add the time/frequency to the prescription.

Question 6: View

A nurse is preparing to administer quinapril 20 mg PO. Available is quinapril 40 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

To find the number of tablets,

we divide the total dosage in mg by the strength of each tablet in mg.

Let’s do the calculation:

Numberoftablets=StrengthofeachtabletinmgTotaldosageinmg=40mg/tablet20mg=0.5tablet

So, the nurse should administer 0.5 tablet of quinapril.

Question 7: View

A nurse is preparing to administer lidocaine 200 mg IM stat and repeat in 60 min. Available is lidocaine Injection 300 mg/3 mL. How many ml should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

the nurse can administer lidocaine 200 mg IM using the available lidocaine injection 300 mg/3 mL. Here's the calculation to determine the volume to administer per dose:

1. Lidocaine concentration per milliliter (mL):

Concentration (mg/mL) = Total lidocaine (mg) / Volume (mL)

Concentration (mg/mL) = 300 mg / 3 mL

Concentration (mg/mL) = 100 mg/mL

2. Volume to administer for 200 mg dose:

Dosage (mg) / Concentration (mg/mL) = Volume (mL)

200 mg / 100 mg/mL = 2 mL

Therefore, the nurse should administer 2 mL of lidocaine injection per dose.

Question 8: View

A nurse is preparing to administer nifedipine 20 mg PO three times a day. Available is nifedipine 10 mg capsules. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

Dosage per capsule: The available capsules contain 10 mg of nifedipine each.

Required dosage per dose: The nurse needs to administer 20 mg of nifedipine.

Number of capsules: To determine the number of capsules, we can divide the required dosage by the dosage per capsule:

Number of capsules = Required dosage (mg) / Dosage per capsule (mg)

Number of capsules = 20 mg / 10 mg/capsule

Number of capsules = 2

Since medication cannot be administered in parts of capsules, we round up to 2 to ensure the patient receives the full 20 mg dose.

Therefore, the nurse should administer 2 capsules of nifedipine 10 mg per dose.

Question 9: View

A nurse is preparing to administer furosemide 20 mg PO to a client. How should the nurse expect the medication to appear? (Refer to the medication label below to answer the question.)

A. As a square, white tablet B. With "Furosemide 20 mg" printed on one side of the capsule C. With "EP 116" stamped on one side of the tablet D. As a multicolored capsule

Explanation

A) As a square, white tablet:

The medication label indicates that furosemide 20 mg is a white, round tablet, not a square one. Therefore, this option is incorrect based on the label provided.

B) As a multicolored capsule:

The medication label specifies that furosemide 20 mg is a white, round tablet, not a multicolored capsule. Thus, this option does not match the description on the label.

C) With "Furosemide 20 mg" printed on one side of the capsule:

The label does not indicate that "Furosemide 20 mg" is printed on the medication. It describes the appearance as a white, round tablet with specific markings, but not with the dosage printed directly on it in this manner.

D) With "EP 116" stamped on one side of the tablet:

The label indicates that the furosemide 20 mg tablets are white, round tablets with "EP 116" stamped on one side. This option accurately matches the description provided on the medication label.

Question 10: View

A nurse is preparing to administer methylprednisolone 7 mg/kg/day IM in two divided doses to a school-age child who weighs 64 lb. Available is methylprednisolone 20 mg/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.)

Explanation

To calculate the correct dose of methylprednisolone, we need to follow these steps:

Convert pounds to kilograms:
- 64 lb * 0.4536 kg/lb = 29 kg
Calculate the daily dose in milligrams:
- 7 mg/kg/day * 29 kg = 203 mg/day
Calculate the dose per administration:
- Since the medication is divided into two doses, divide the daily dose by 2:
  - 203 mg/day / 2 = 101.5 mg/dose
Determine the volume needed from the available concentration:
- 101.5 mg * (1 mL / 20 mg) = 5.075 mL

Therefore, the nurse should administer 5.1 mL of methylprednisolone per dose.

Answer: 5.1 mL

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