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Ati dosage calculation rn fundamentals proctored assessment exam 1
Total Questions : 34
Showing 10 questions, Sign in for moreA 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.
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
- Since the medication is divided into three doses, divide the daily dose by 3:
-
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
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.
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.
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 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.
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.
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.
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 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
- Since the medication is divided into two doses, divide the daily dose by 2:
-
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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Diana: 1.1 ml ~ 2mos ago