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Ati RN Dosage Calculations RN Fundamentals Proctored Assessment 3.1
Total Questions : 33
Showing 25 questions, Sign in for moreA nurse is preparing to administer diclofenac sodium 200 mg PO daily in equally divided doses every 6 hr. How many mg 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
Total daily dose = 200 mg Frequency = Every 6 hours Total number of doses =24/6
=4 doses
Total dose = 200mg Per dose= 200mg/4
= 50mg
So, the nurse should administer 50 mg per dose.
A nurse is teaching a newly hired nurse about documentation in the medical record. Which of the following abbreviations should the newly hired nurse identify as a metric unit of weight?
A nurse is reviewing a new prescription for alendronate 70 mg PO once per week upon waking to be taken 30 min before food, fluids, or medication with a client who has osteoporosis. The client is to remain upright for 30 min after administration. How should the nurse interpret this prescription for the client?
A nurse is preparing to administer filgrastim 480 mcg subcutaneous daily. Available is filgrastim injection 300 mcg/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
Filgrastim dose: 480 mcg
Filgrastim injection concentration: 300 mcg/mL Calculation:
To find the volume of the injection needed, divide the dose by the concentration: Volume (mL) = Dose/ Concentration
Volume (mL) = 480 mcg / 300 mcg/mL
Volume (mL) ≈ 1.6 mL (rounded to the nearest tenth)
A nurse is preparing to administer insulin glargine to a child who has type 1 diabetes mellitus.
The client is to receive 10 units subcutaneous once daily at bedtime. Reading the label on the unopened vial, the nurse should determine that the vial contains how many doses of this medication? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
- Insulin glargine concentration: 100 units/mL
- Total volume of insulin in the vial: 10 mL
- Dose of insulin glargine per day: 10 units
Calculation:
First, let's find out how many total units are in the vial:
Total units = Concentration (units/mL) × Volume (mL) Total units = 100 units/mL × 10 mL
Total units = 1000 units
Now, let's find out how many doses can be obtained from the total units in the vial: Number of doses = Total units / Dose per day
Number of doses = 1000 units / 10 units/day Number of doses = 100 doses
So, the vial contains approximately 100 doses of insulin glargine.
A nurse is preparing to administer calcium citrate 1.9 g PO. Available is calcium citrate 950 mg tablets. How many tablets 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.)
Explanation
Given:
- Desired dose of calcium citrate: 1.9 g
- Available strength of calcium citrate tablets: 950 mg
First, convert the desired dose from grams to milligrams: 1.9 g = 1900 mg
Now, let's find out how many tablets are needed:
Number of tablets = Desired dose / Strength per tablet
Number of tablets = 1900 mg / 950 mg/tablet Number of tablets = 2 tablets
So, the nurse should administer approximately 2 tablets of calcium citrate.
A nurse is preparing to administer levothyroxine 0.05 mg PO to a client. Available is levothyroxine 25 mcg tablets. How many tablets should the nurse plan to administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
- Desired dose of levothyroxine: 0.05 mg
- Available strength of levothyroxine tablets: 25 mcg
First, convert the desired dose from milligrams to micrograms:
0.05 mg = 50 mcg
Number of tablets = Desired dose / Strength per tablet
Number of tablets = 50 mcg / 25 mcg/tablet Number of tablets = 2 tablets
So, the nurse should plan to administer 2 tablets of levothyroxine.
A nurse is preparing to administer morphine 0.3 mg/kg PO to a client who weighs 99 lb.
Available is morphine oral solution 4 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
Given:
- Desired dose of morphine: 0.3 mg/kg
- Client's weight: 99 lb
- Available strength of morphine oral solution: 4 mg/mL
First convert the client's weight from pounds to kilograms: 99 lb ÷ 2.20462 = 44.91 kg (rounded to the nearest hundredth)
The desired dose of morphine:
Desired dose = Client's weight × Dose per kg Desired dose = 44.91 kg × 0.3 mg/kg
Desired dose ≈ 13.473 mg
The milliliters of morphine oral solution this corresponds to:
Volume (mL) = Desired dose / Concentration Volume (mL) = 13.473 mg / 4 mg/mL Volume (mL) ≈ 3.37 mL
So, the nurse should administer approximately 3.4 mL of morphine oral solution.
A nurse is preparing to administer megestrol 800 mg PO. Available is megestrol suspension 40 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.)
Explanation
Given:
- Desired dose of megestrol: 800 mg
- Available strength of megestrol suspension: 40 mg/mL
First, find out how many milliliters of megestrol suspension correspond to the desired dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 800 mg / 40 mg/mL Volume (mL) = 20 mL
So, the nurse should administer 20 mL of megestrol suspension.
A nurse is preparing to administer ceftriaxone 75 mg/kg/day IM in two divided doses to a child who weighs 37 lb. The amount available after reconstitution is ceftriaxone 350 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
Given:
- Desired dose of ceftriaxone: 75 mg/kg/day
- Child's weight: 37 lb
- Available strength of ceftriaxone after reconstitution: 350 mg/mL
First, convert the child's weight from pounds to kilograms: 37 lb ÷ 2.20462 = 16.78 kg (rounded to the nearest hundredth)
The total daily dose of ceftriaxone:
Total daily dose = Desired dose × Child's weight
Total daily dose = 75 mg/kg/day × 16.78 kg Total daily dose ≈ 1258.5 mg
Since the total daily dose is to be divided into two equal doses, each dose would be:
Each dose = Total daily dose / Number of doses per day Each dose = 1258.5 mg / 2
Each dose = 629.25 mg
The milliliters of ceftriaxone correspond to each dose:
Volume (mL) = Dose / Concentration
Volume (mL) = 629.25 mg / 350 mg/mL Volume (mL) ≈ 1.8 mL
So, the nurse should administer approximately 1.8 mL of ceftriaxone per dose.
A nurse is preparing to administer midazolam 7 mg IM 30 min prior to a procedure. Available is midazolam injection 5 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
Given:
- Desired dose of midazolam: 7 mg
- Available strength of midazolam injection: 5 mg/mL
The milliliters of midazolam correspond to the desired dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 7 mg / 5 mg/mL
Volume (mL) = 1.4 mL
So, the nurse should administer approximately 1.4 mL of midazolam.
A nurse is preparing to administer testosterone cypionate 125 mg IM. Available is testosterone cypionate injection 200 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
Given:
- Desired dose of testosterone cypionate: 125 mg
- Available strength of testosterone cypionate injection: 200 mg/mL
First, find out how many milliliters of testosterone cypionate correspond to the desired dose:
Volume (mL) = Desired dose / Concentration
Volume (mL) = 125 mg / 200 mg/mL Volume (mL) = 0.625 mL
Rounded off to the nearest hundredth= 0.63ml
So, the nurse should administer approximately 0.63 mL of testosterone cypionate per dose.
A nurse is preparing to administer bumetanide 1.5 mg PO daily. Available is bumetanide 0.5 mg tablets. How many tablets 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.)
Explanation
Given:
- Desired dose of bumetanide: 1.5 mg
- Available strength of bumetanide tablets: 0.5 mg
First, find out how many tablets are needed:
Number of tablets = Desired dose / Strength per tablet
Number of tablets = 1.5 mg / 0.5 mg/tablet Number of tablets = 3 tablets
So, the nurse should administer 3 tablets of bumetanide.
A nurse is preparing to administer heparin 8,000 units subcutaneous to a client. Available is heparin injection 10,000 units/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
Given:
- Desired dose of heparin: 8,000 units
- Available strength of heparin injection: 10,000 units/mL
First, find out how many milliliters of heparin correspond to the desired dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 8,000 units / 10,000 units/mL Volume (mL) = 0.8 mL
So, the nurse should administer 0.8 mL of heparin.
A nurse is preparing to administer magnesium hydroxide 2.4 g PO daily. Available is magnesium hydroxide suspension 400 mg/5 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.)
Explanation
Given:
- Desired dose of magnesium hydroxide: 2.4 g
- Available strength of magnesium hydroxide suspension: 400 mg/5 mL
First, let's convert the desired dose from grams to milligrams:
2.4 g = 2400 mg
Now, let's find out how many milliliters of magnesium hydroxide suspension correspond to the desired dose:
Volume (mL) = Desired dose / Concentration
Volume (mL) = 2400 mg / 400 mg/5 mL Volume (mL) = (2400 mg * 5 mL) / 400 mg Volume (mL) = 30 mL
So, the nurse should administer 30 mL of magnesium hydroxide suspension.
A nurse is reviewing a client's new prescription for nitroglycerin 0.4 mg SL every 3 to 5 min PRN for chest pain. The nurse should instruct the client to do which of the following?
A nurse is preparing to implement a new prescription that reads, "fluocinolone cream, apply topically to axillary rash twice a day." The nurse should ask the provider to add which of the following to the medication prescription?
A nurse is converting a medication dose from g to mcg. The amount available is 5 g. The nurse should recognize that this amount is equal to how many mcg? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
1g= 1,000,000 mcg
5g= 5 *1,000,000
=5,000,000 mcg
A nurse is preparing to administer morphine 4 mg subcutaneous to a client. Available is morphine 10 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
Volume (mL) = Desired dose / Concentration
Volume (mL) = 4 mg / 10 mg/mL
Volume (mL) = 0.4 mL
Which of the following statements about the drug below is true.
A nurse is preparing to administer ceftazidime 750 mg IM. Available is ceftazidime 1 g vial.
The nurse reconstitutes the medication to yield a final concentration of ceftazidime 280 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
Volume (mL) = Desired dose / Concentration
Volume (mL) = 750 mg / 280 mg/mL
Volume (mL) rounded off to the nearest tenth ≈ 2.7 mL
A nurse is preparing to administer isoniazid 187 mg IM. Available is isoniazid injection 100 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
Desired dose of isoniazid: 187 mg
Available strength of isoniazid injection: 100 mg/mL
First, find out how many milliliters of isoniazid correspond to the desired dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 187 mg / 100 mg/mL
Volume (mL) = 1.87 mL
Rounded off to the nearest tenth = 1.9 ml
A nurse is preparing to administer chlorpromazine 0.55 mg/kg IM every 6 hr to a child who weighs 44 lb. Available is chlorpromazine 25 mg/mL injection. 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
Given:
- Desired dose of chlorpromazine: 0.55 mg/kg every 6 hours
- Child's weight: 44 lb
- Available strength of chlorpromazine injection: 25 mg/mL
First, convert the child's weight from pounds to kilograms:
44 lb ÷ 2.20462 = 20 kg
Now, let's calculate the desired dose of chlorpromazine:
Desired dose = Dosage per kg × Weight Desired dose = 0.55 mg/kg × 20 kg Desired dose = 11 mg
Now, let's find out how many milliliters of chlorpromazine correspond to this dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 11 mg / 25 mg/mL Volume (mL) ≈ 0.44 mL
So, the nurse should administer approximately 0.4 mL of chlorpromazine per dose.
A nurse is teaching a client who has a new prescription for ibuprofen oral suspension 200 mg PO. Available is ibuprofen 100 mg/5 mL. How many tsp should the nurse instruct the client to take? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
- Desired dose of ibuprofen: 200 mg
- Available strength of ibuprofen oral suspension: 100 mg/5 mL
First, find out the concentration of ibuprofen in mg/mL:
Concentration = 100 mg / 5 mL Concentration = 20 mg/mL
Now, calculate how many milliliters (mL) of ibuprofen oral suspension are needed to achieve the desired dose:
Volume (mL) = Desired dose / Concentration Volume (mL) = 200 mg / 20 mg/mL
Volume (mL) = 10 mL
Since 1 teaspoon (tsp) is approximately 5 milliliters (mL), the nurse should instruct the client to take:
Number of teaspoons = Volume (mL) / 5 mL per tsp Number of teaspoons = 10 mL / 5 mL per tsp Number of teaspoons = 2 tsp
So, the nurse should instruct the client to take 2 teaspoons of ibuprofen oral suspension.
A nurse is preparing to administer gentamicin 1 mg/kg IM to a client who weighs 154 lb.
Available is gentamicin solution 40 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
Given:
- Desired dose of gentamicin: 1 mg/kg
- Client's weight: 154 lb
- Available strength of gentamicin solution: 40 mg/mL
First, convert the client's weight from pounds to kilograms:
154 lb ÷ 2.20462 = 69.853 kg (rounded to the nearest hundredth)
Now, calculate the desired dose of gentamicin:
Desired dose = Dosage per kg × Weight Desired dose = 1 mg/kg × 69.853 kg Desired dose = 69.853 mg
Now, find out how many milliliters of gentamicin correspond to this dose: Volume (mL) = Desired dose / Concentration
Volume (mL) = 69.853 mg / 40 mg/mL Volume (mL) ≈ 1.746 mL
So, the nurse should administer approximately 1.7 mL of gentamicin.
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