NCLEX: Dosage Calculation

NCLEX: Dosage Calculation

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Equivalent: 1mcg=• 0.0000001 g

1g =1000 mg

• mg=1000 mcg or 0.001 g

1kg =2.2 lb Choose an answer 110 ml21 mL 30.1 ml40.01 ml Don't know?

1mL=0.001 L

• L=1000 mL

Commonly used household measures: 1 mL=• 15 drops (gtt)

• tsp= & 1 tbsp=• 1 tsp= 5 mL

• 1 tbsp= 15 mL

• oz=• 30 mL

1mL=100 units

• unit=1000 milliunits
• pint (pt)=500 mL

In the metric system, to convert larger to smaller multiply by _____ and to convert smaller to larger divide by _____ • In the metric system, to convert larger to smaller multiply by 1000 • To convert smaller to larger divide by 1000

• measuring cup=8 ounces (oz)

Standard Formula for Calculating a Dosage:• D/H X Q=X

IV Flow RateTotal volume (mL/hr) x drop factor (gtt/mL)/time in minutes (60 min/hr =drops per minute (gtt/min) Infusion TimeTotal volume to infuse/milliliters per hour being infused =infusion time Number of millileters per hourTotal volume in mL/number of hours to administer= mL/hr One-tenth=0.1 One-hundredth=0.01 One-thousandth0.001 100 units=1 mL

• unit=1000 milliunits