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Ati dosage calculations quiz

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Total Questions : 14

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Question 1:

A nurse is preparing to administer a 100 mcg stat dose of fentanyl IV for a client with severe pain. The amount available is 0.05 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.)

 

Answer and Explanation
Correct Answer: "2" mL

Explanation

Convertmicrograms(mcg)tomilligrams(mg):

100mcg=0.1mg

Determinetheconcentrationavailable:

0.05mg/mL

Usetheformulatocalculatethevolume:

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

Volume(mL)=0.1mg/0.05mg/mL

Calculatethevolume:

Volume(mL)=2


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Question 2:

A nurse is documenting the Intake & Output on one of his clients for the last 12 hours. The client reported that he had 5 ounces of juice, 6 ounces of coffee, and 12 ounces of water and half an ounce of liquid medication. The client had a urine output of 420 mL and 1 episode of diarrhea. What will the nurse enter on the client's total intake (mL)? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation
Correct Answer: "750" mL

Explanation

Calculatethetotalintakeinmilliliters:

Convertouncestomilliliters:

Juice:5oz×30mL/oz=150mL

Coffee:6oz×30mL/oz=180mL

Water:12oz×30mL/oz=360mL

Liquidmedication:0.5oz×30mL/oz=15mL

Sumtheintakes:

Totalintake:150mL(juice)+180mL(coffee)+360mL(water)+15mL(medication)=705mL


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Question 3:

A nurse is preparing to administer lactulose 15 mL PO once daily. How many tablespoons 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.)

Answer and Explanation
Correct Answer: "1" tablespoon

Explanation

Convertmilliliterstotablespoons:

tablespoon=15mL

Calculatethenumberoftablespoons:

Numberoftablespoons=15mL/15mL/tablespoon=1tablespoon


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Question 4:

A nurse is preparing to administer 2.4 million units of penicillin G intramuscularly for a client who is both positive for HIV and syphilis. The prescriber ordered 2.4 million units IM every week for three consecutive weeks. The available dose comes in a 600,000/mL vial. How many mL of medications would the client receive per dose?

Answer and Explanation
Correct Answer: "4" mL

Explanation

Determinethedosagerequired:2.4millionunits

Determinetheconcentrationavailable:600,000units/mL

Usetheformula:

Volume(mL)=Requireddose(units)/Concentration(units/mL)

Volume(mL)=2.4millionunits/600,000units/mL

Calculatethevolume:

Volume(mL)=4


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Question 5:

A nurse is preparing to administer tramadol 100 mg PO every 6 hours for a client prior to wound dressing change. The amount available is 50 mg/tablet. How many tablet(s) 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.)

Answer and Explanation
Correct Answer: "2" tablets

Explanation

Step by step calculation:

Determinethedosagerequired:100mg

Availabletabletstrength:50mgpertablet

Calculatethenumberoftablets:

Numberoftablets=Requireddose(mg)/Tabletstrength(mg/tablet)=100mg/50mg/tablet

Result:

Numberoftablets=2


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Question 6:

A nurse is admitting a client with suspected colorectal cancer. The client weighs 126 lbs. How will the nurse document the client's weight in kilograms? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation
Correct Answer: "57.3" kg

Explanation

Rationale:

Step by step calculation:

Convertpoundstokilograms:

1lb=0.453592kg

Calculatetheclient'sweightinkilograms:

126lbs x 0.453592kg/lb=57.272592kg

Roundtothenearesttenth:

57.3kg


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Question 7:

A nurse is preparing to administer furosemide 20 mg IV push stat for a client with pulmonary edema. The amount available is 10 mg/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.)

 

Answer and Explanation
Correct Answer: "2" mL

Explanation

Step by step calculation:

Determinethedosagerequired:20mg

Determinetheconcentrationavailable:10mg/mL

Usetheformula:

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

Calculatethevolume:

Volume(mL)=20mg/10mg/mL=2


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Question 8:

A nurse has been infusing half a liter of LR to a client with dehydration at a rate of 73 mL/hr. After 6 hours the infusion was discontinued by the provider. The IV fluid was started at 8 am. At what time (using military time) will the nurse document that the IV fluid was discontinued?

Answer and Explanation
Correct Answer: "1400" hours

Explanation

Step by step calculation:

StarttimeoftheIVfluidinfusion:08:00(militarytime).

Durationoftheinfusion:6hours.

Calculatetheendtime:

08:00+6hours=14:00


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Question 9:

A nurse is preparing to administer amoxicillin 500 mg PO every 12 hours for a paediatric client with an ear infection. The amount available is 125 mg/5 mL. How many teaspoons should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use trailing zero.)

 

Answer and Explanation
Correct Answer: "4" teaspoons

Explanation

Step by step calculation:

Determinethedosagerequired:500mg

Availableconcentration:125mg/5mL

CalculatethevolumeinmL:

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

Volume(mL)=500mg/125mg/5mL=20mL

ConvertmLtoteaspoons:

1teaspoon=5mL

Numberofteaspoons=20mL/5mL/teaspoon=4teaspoons


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Question 10:

A nurse is preparing to administer milk of Magnesia 60 mL per day at nighttime for a client with chronic constipation. The amount available is 400 mg/5 mL. How many tablespoons 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.)

Answer and Explanation
Correct Answer: "4" tablespoons

Explanation

Step by step calculation:

Determinethedosagerequired:60mL

ConvertmLtotablespoons:

  1. tablespoon=5mL

Calculatethenumberoftablespoons:

Numberoftablespoons=60mL/15mL/tablespoon=4tablespoons


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