Ati dosage rn dosage calculation rn mental proctored exam 3.2 assessment

Total Questions : 35

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Question 1: View

A nurse is preparing to administer phenobarbital sodium 300 mg IV bolus to a client who is experiencing withdrawal from benzodiazepines. Available is phenobarbital sodium injection 130 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

Step-by-step calculation:

Determinethedosagerequired:300mg

Determinetheconcentrationavailable:130mg/mL

Usetheformula:

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

Volume(mL)=300mg130mg/mL

Calculatethevolume:

Volume(mL)=2.3077

Roundtothenearesttenth: 2.3mL

Question 2: View

A nurse is preparing to administer mirtazapine 45 mg PO to a client. The nurse should identify that this is equivalent to how many g? (Round the answer to the nearest thousandth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

Rationale:

To solve,convertmilligrams(mg)tograms(g)stepbystep:

Determinethedosagerequiredinmg:45mg

Understandtheconversionfactor:1g=1000mg

Usetheformula:

45/1000= 0.045g

Calculatetheweight:

Weight(g)=0.045

Question 3: View

A nurse is preparing to administer 0.2 g of clozapine PO to a client. Available is clozapine 100 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

Rationale:

How to solve this:

Determinethedosagerequiredinmg:0.2g

Convertgramstomilligrams:

0.2g×1000mg/g=200mg

Availabletabletstrength:100mgpertablet

Calculatethenumberoftablets:

Numberoftablets=Requireddose(mg)/Tabletstrength(mg/tablet)=200mg/100mg/tablet

Result:

Numberoftablets=2

Question 4: View

A nurse is preparing to administer fluoxetine 15 mg PO to a client who has premenstrual dysphoric disorder. Available is fluoxetine oral solution 20 mg/5 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

Rationale:

How to solve it:

Determinethedosagerequired:15mg

Determinetheconcentrationavailable:20mg/5mL

Usetheformula:

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

Converttheconcentrationintoasimplerfraction:

20mg/5mL=4mg/mL

Calculatethevolume:

Volume(mL)=15mg/4mg/mL

Simplifythecalculation:

Volume(mL)=3.75mL

Roundtothenearesttenth:

3.8mL

Question 5: View

A nurse is preparing to administer diazepam 2.5 mg PO once a day at bedtime to a client who has anxiety. Available is diazepam oral solution 5 mg/5 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

Rationale:

How to solve this stepbystep:

Determinethedosagerequired:2.5mg

Determinetheconcentrationavailable:5mg/5mL

Simplifytheconcentration:

5mg/5mL=1mg/mL

Usetheformula:

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

Calculatethevolume:

Volume(mL)=2.5mg/1mg/mL

Volume(mL)=2.5mL

Question 6: View

A nurse is preparing to administer venlafaxine 225 mg PO to a client who has generalized anxiety disorder. Available is venlafaxine 75 mg sustained-release capsules. How many capsules 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

Rationale:

How to solve this step by step:

Determinethedosagerequired:225mg

Availablecapsulestrength:75mgpercapsule

Calculatethenumberofcapsules:

Numberofcapsules=Requireddose(mg)/Capsulestrength(mg/capsule)

Numberofcapsules=225mg/75mg/capsule

Result:

Numberofcapsules=3

Question 7: View

A nurse is preparing to administer naloxone 0.2 mg IM to a client who is experiencing an opioid overdose. Available is naloxone 0.4 mg/mL for injection. How many mL should the nurse administer? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

Stepbystep calculation:

Determinethedosagerequired:0.2mg

Determinetheconcentrationavailable:0.4mg/mL

Usetheformula:

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

Volume(mL)=0.2mg/0.4mg/mL

Calculatethevolume:

Volume(mL)=0.5

Question 8: View

A nurse is preparing to administer naloxone 40 mcg IM to a client. How many mg should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Explanation

Step by step calculation:

Determinethedosagerequiredinmcg:40mcg

Understandtheconversionfactor:1mg=1000mcg

Usetheformula:

Weight(mg)=Weight(mcg)1000

Weight(mg)=40mcg/1000mcg

Calculatetheweight:

Weight(mg)=0.04

Question 9: View

A nurse is caring for a client who has a prescription for chlorpromazine 1 g/day PO divided into four equal doses. How many mg 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.)

Explanation

Step by step calculation:

Determinethetotaldosageperdaying:1g

Convertgramstomilligrams:

1g= 1000mg

Dividethetotaldailydoseintofourequaldoses:

Doseperadministration=1000mg/4

Calculatethedose:

Doseperadministration=250mg

Question 10: View

A nurse is preparing to administer haloperidol 500 mcg PO to a client. How many mg 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

Step by step calculation:

Determinethedosagerequiredinmcg:500mcg

Understandtheconversionfactor:1mg=1000mcg

Usetheformula:

Weight(mg)=Weight(mcg)1000

Weight(mg)=500mcg/1000

Calculatetheweight:

Weight(mg)=0.5

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