Week Eight: Fluid Calculations Flashcards
What is flow rate?
The amount of fluids that your patient is receiving over time
How do you add medications to a fluid bag?
- calculate your needed volume of medication first
- withdraw that amount of fluid from the bag and then add your medication
(THis maintains your total volume to ensure that your calculations match your fluid bag)
A fluid pump can be set to a flow rate in…
mL/min
mL/hr (standard)
What is the drip rate?
How fast the drips are dripping
Technicians set the speed of drops in the drip chamber to set the flow rate
Drip rates are set and reported in…
gtt/# of sec (rounded to the nearest whole drop)
gtt/min (most standard- round normally)
If you know the drip rate you can use the _____ type to determine the flow rate
Drip set
With a given _______ and _______ you can determine the rate at which a drug is being given
Concentration and flow rate
Drug rates can be reported in…
Weight Units/min
Weight Units/hr
How do you calculate flow rates?
- Determine total volume administered or desired
- Determine amount of time this took or how long it is planned to take
- Make this into a fraction with volume over time
- simplify as needed
What is the equation for flow rate?
Total fluid
________
Time
Drip rates can be calculated if you know the _____ and the _______ being used.
Flow rate and the drip set
What is the equation for formula method for drip rate?
Vol. of fluid (mL) X Drip set (gtt/mL)
____________________
Time (min or sec)
= gtt/min
What are the steps for calculating drug rates?
- Determine flow rate
- Determine concentration of the drug in the fluids being administered as a fraction
- Multiply number of milliliters in flow rate by number of weight units in concentration
- Place this new number over your existing time units
- Convert units as needed
Name some facts about heparin
- Potent anticoagulant
- In the Top 10 List for medication errors
- Measured in units, not by weight
- Concentration is listed in Units/mL
Facts about injectable Heparin
Used to treat and prevent systemic clotting in very small amounts
Given SQ to allow for slower effect over time