- Rules for rounding
- If you are calculating in tablets, always round to the nearest 1/2 tablet.
- When you are calculating IV’ rates, round to the nearest whole number.
- Perform rounding only the end of the calculation
- CONVERSTIONS TO USE
1 grain =60 mg
15 grain=1 gram
1 pint= 2 cups=480mL
1 quart= 2 pt= 4 cups=960mL
1 oz= 30 mL
1 cup = 8 oz = 240 mL
1 quart = 2 pt = 4cups= 960 mL
1 Tbs= 15 mL
1 gallon= 4 qt = 8 pt
- Note:Some drug conversions will use cc(cubic centimeters) This is the same as a mL. 1cc=1mL
- Note: (*There are actually 29.57 mL in 1 fl oz, but 30 mL is usually used by nurses in medical facilities. We will stay with this standard for all liquid measurements. 1 oz=30mL, 1 c=240mL, 1 pt=480mL, 1 quart=960mL.)
1. A client receiving a prescription for LR 1,000 mL in 12hr. Using a micro drip system that delivers 60 micro drops/mL, the nurse will regulate the infusion for how many drops per minute.
_____gtts/min. (Round to the nearest whole number-remember no trailing zeros if a whole number)
2. You have an order to administer 1L of 5% Dextrose with 40 meq of potassium over 16 hours. How many mL per hour will you set on the IV pump?___________mL/hr.
(Remember to Round to the nearest whole number)
3. The provider has ordered 1,000 mL of 0.9% sodium chloride (normal saline) to infuse over 8 hr. You have tubing with a drop factor of 15 gtt/mL. You must calculate how many gtt/min to use to set the IV flow rate._______gtts/min (round to the nearest whole number)
4.Critical considerations for prevention of medication errors include all except
a. Follow the 4 rights of safe drug administration
b. None of these are true
c.All of these are correct.
d. Always check drug calculations with a coworker
e. Watch for look alike sound alike
f. Be knowledgeable about the purpose, action side effects, abnormal reactions, delivery methods and follow up