Watkins Book: Chapter 8 - Dosage Flashcards
What are the four methods for calculating drugs dosages for nonparenteral route?
- Ratio and proportion method
- Formulation method
- Dimensional analysis
- Fraction
The desired dose (D) is the _____ dose.
ordered
What is the equation for formulation? What does each letter stand for?
D/HXQ
D= Dosage desired (Dr's order) H = What we HAVE on HAND Q = QUANTITY of units given
When using the fraction method, the ordered dose and units must be in the _____ proportion as the amount on the label.
same
Fraction method equation?
Dosage on hand/Dosage unit = Desired dose/dose given
In the pediatric population, ____ is frequently used to calculate dosages because body systems have not matured.
Weight
If a medication is not approved for pediatric use, but was prescribed for a child, what do you do?
Contact the prescriber and the pharmacist. Use dosage calculation for peds.
_________ is the process of converting powdered medication into a liquid form
Reconstituting
The amount of fluid used in reconstituting is referred to as?
Diluent
According to Watkins, what is the best way to calculate an IV drip rate?
Dimensional analysis. p.137
What is an electronic regulator pump?
A machine that delivers and monitors IV fluids at a set rate. p137
What is equation for programming an electronic regulator pump?
Total mL ordered/Total time ordered in hours = mL/Hr
mL ordered/hours ordered=mL/Hours ordered
mL/Hr
What does it mean for an IV to be infiltrated?
Leakage of IV fluid or medication into the surrounding tissue; can be caused by infusing too quickly.
Manual IV sets use _____ to infuse a solution at a set rate.
gravity
The drop factor for a manual IV equals drops per __.
mL
