Calculations Chapter 8

Calculate Doses of Liquid Oral and Parenteral Medications

Objectives

• Calculate doses of medications and additives that come in liquid dosage forms.

Giving Liquid Medications

• Injectable– IV Bag– IV Piggy Back– Injection (IM, IVP, SQ, IT, ID, etc)

• Oral– Medicine Cup– Oral Syringe– TSP/TBSP

How to……..

1 2

3 X

Divide

Multiply

•A physician orders amoxicillin 900 mg to be divided into doses tid.•What is the volume of medication for the day? •What is the volume of medication for each dose? •What utensil should be used for administration?

•A physician orders digoxin elixir 125 mcg po qam. Use the following label for calculations.•What is the total volume of medication that should be given each day? •What utensil should be used for administration? Pick the correct utensil and fill in the correct amount. (See Next Slide)

•A physician orders haloperidol 5 mg stat and then 2 mg tid.•What volume of medication should be administered to the patient stat? What volume of medication should be administered in following doses? •Can the same container of medication be used until it is empty? •Choose the correct utensils for the stat dose and the following doses.

•A physician orders Ceclor 500 mg stat then 250 mg tid. Use the following label for calculations.•What is the volume of the stat dose? What is the volume of the following doses? •Which utensil should be used for the stat dose? •What utensil should be used for the following doses?

•A physician orders atropine sulfate 0.1 mg IM stat. The label is atropine 400 mcg/mL. •What is the stat dose volume to be administered? •Which syringe should be used to administer this medication? •Show the proper volume of medication on the chosen syringe.

•A physician orders erythromycin oral suspension 500 mg stat then 250 mg tid. The label reads erythromycin 200 mg/5 mL.•What is the volume of medication that should be administered to the patient as a stat dose? What is the volume of medication that should be administered in subsequent doses? •What is the correct utensil for the stat dose? •What is the correct utensil for the subsequent doses?

•A physician orders nitroglycerin 1500 mcg IV in 50 mL of D-5-W stat. The label is nitroglycerin ampules 50 mg/10 mL.•What is the dose that should be added to the IV fluids? •What size syringe should be used to add the medication to the fluids?

•A physician orders nitroglycerin 1500 mcg IV in 50 mL of D-5-W stat. The label is nitroglycerin ampules 50 mg/10 mL.•What is the dose that should be added to the IV fluids? •What size syringe should be used to add the medication to the fluids?

•A physician orders V-Cillin K 375 mg tid. The label is V-Cillin K 125 mg/5 mL.•What is the volume of medication that should be administered with each dose? •What is the most appropriate utensil for administration shown below? •How can this be administered most efficiently using household utensils? •Indicate the correct volume of medication on the most appropriate utensil.

Questions?