1.A nurse is caring for a client who has heart failure and a prescription for digoxin 125 mcg PO daily. Available is

digoxin PO 0.25 mg/tablet. How many tablets 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.)

0.5 tablet(s)

Correct Rationale: Ratio and Proportion
STEP 1: What is the unit of measurement the nuse should

calculate? tablet >>STEP 2: What is the dose the nurse should administer? Dose to

administer= Desired 125 mcg >>STEP 3: What is the dose available? Dose available =

Have 0.25 >>STEP 4: Should the nurse convert the units of measurement? Yes (mcg does

not equal mg) >>1 mg/1000 mcg = x mg/125 mcg
X = 0.125 mg
STEP 5:What is

the quantity of the dose available? 1 tablet >>STEP 6: Set up an equation and solve for X.

>>Have/Quantity = Desired/X >>0.25 mg/1 tablet = 0.125 mg/X tablet

>>X = 0.5 >>STEP 7: Round if necessary. >>STEP 8: Reassess to determine whether the

amount to administer makes sense. If there are 0.25 mg/tab and the provider prescribed

0.025 mg, it makes sense to administer 1/2 tab. The nurse should administer digoxin tab

PO daily.>>
Desired Over Have
STEP 1: What is the unit of measurement the

nurse should calculate? Tablet>>STEP 2: What is the dose the nurseshould administer?

Dose to administer= Desired 125 mcg >>STEP 3: What is the doseavailable? Dose

available = Have 0.25 mg/tablet >>STEP 4: Should the nurse convert the units of

measurement? Yes (mcg does not equal mg) >>1 mg/1000 mcg = x mg/125 mcg
X =

0.125 mg
STEP 5: What is the quantity of the dose available? 1 tablet >>STEP 6: Set

up an equation and solve for X. >>Desired x Quantity/Have = X >>0.125 mg x 1

tablet/0.25 mg = X tab
0.5 = X >>STEP 7: Round if necessary. >>STEP 8: Reassess

to determine whether the amount to administer makes sense. If there are 0.25 mg/tab and

the provider prescribed 0.125 mg, it makes sense to administer 1/2 tab. The nurse should

administer digoxin tab PO daily.>>
Dimensional Analysis
STEP 1: What is the

unit of measurement the nurse should calculate? Tablet>>STEP 2: What is the quantity of

the dose available? 1 tablet >>STEP 3: What is the dose available? Dose available =

Have 0.25 mg

>>STEP 4: What is the dose the nurse should administer? Dose to administer= Desired

125 mcg >>STEP 5: Should the nurse convert the units of measurement? Yes (mcg does

not equal mg) >>1 mg/1000 mcg = x mg/125 mcg
X = 0.125 mg
STEP 6:Set up

an equation and solve for X. >>X = Quantity/Have x Conversion

(Have)/Conversion(Desired) x Desired/ >>X tablet = 1 tablet/0.25 mg x 0.125 mg/>>X

= 0.5 >>STEP 7: Round if necessary. >>STEP 8: Reassess to determine whetherthe

amount to administer makes sense. If there are 0.25 mg/tab and the provider prescribed

0.125 mg, it makes sense to administer 1/2 tab. The nurse should administer digoxin tab

PO daily.>>

InCorrect Rationale: Ratio and Proportion
STEP 1: What is the unit of measurement the nuse should

calculate? tablet >>STEP 2: What is the dose the nurse should administer? Dose to

administer= Desired 125 mcg >>STEP 3: What is the dose available? Dose available

= Have 0.25 >>STEP 4: Should the nurse convert the units of measurement? Yes (mcg

does not equal mg) >>1 mg/1000 mcg = x mg/125 mcg
X = 0.125 mg
STEP 5:

What is the quantity of the dose available? 1 tablet >>STEP 6: Setup an equation and

solve for X. >>Have/Quantity = Desired/X >>0.25 mg/1 tablet

= 0.125 mg/X tablet >>X = 0.5 >>STEP 7: Round if necessary. >>STEP 8: Reassess to

determine whether the amount to administer makes sense. If there are 0.25mg/tab and

the provider prescribed 0.025 mg, it makes sense to administer 1/2 tab. The nurse

should administer digoxin tab PO daily.>>
Desired Over Have
STEP 1: What

is the unit of measurement the nurse should calculate? Tablet>>STEP 2: What is the

dose the nurse should administer? Dose to administer= Desired 125 mcg

>>STEP 3: What is the dose available? Dose available = Have 0.25 mg/tablet

>>STEP 4: Should the nurse convert the units of measurement? Yes (mcg does not