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45 Cards in this Set
- Front
- Back
two common drip to ml ratios
(drip factors) |
60 gtts/ml (mini)
10 gtts/ml (regular) |
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How many 60 minute periods are in an hour?
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1
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How many 10 minute periods are in an hour?
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6
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CALCULATE DROPS PER MINUTE
WHEN GIVEN THE ML/HR If using a 10 gtts/ml set, you would divide the milliliters to be infused per hour by ______. |
6
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CALCULATE DROPS PER MINUTE
WHEN GIVEN THE ML/HR If using a 60 gtts/ml set, you would divide the milliliters to be infused per hour by ______. |
1
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What is a useful formula for calculating drip rate (DPM) when a known volume of fluid must be delivered over a given timeframe?
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VTA * DF
---------- TIM |
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You know the drops per hour.
How would you calculate drops per minute? |
gtts/hr ÷ 60
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You know the drops per minute.
How would you calculate drops per second? |
gtts/min ÷ 60
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You know the drops per minute.
How would you calculate drops per hour? |
gtts/min X 60
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You know the drops per second.
How would you calculate drops per minute? |
gtts/sec X 60
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Medical control will most commonly give you fluid amounts to administer in this ratio.
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ml/hr
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How many milligrams are in 2 grams?
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2000 mg
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How many grams are in 500 milligrams.
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1/2 gram
(0.5 gram) |
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1 gram is how many milligrams?
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1000 mg
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1000 mg is how many grams?
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1 gram
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35 grams is how many milligrams?
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35,000 mg
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To convert from grams to milligrams, how many zeros do you add?
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three
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To convert from milligrams to grams, how do you adjust the decimal point?
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move three places to the left
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abbreviation for drops
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gtts
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What is the formula for calculating Volume to be Administered (VTA)?
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VOH*DD
-------- DOH |
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What is VOH?
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Volume on Hand
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What is a useful formula for calculating the drip rate (DPM) needed to maintain a given dose per minute?
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VOH*DF*DD
----------- DOH |
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What is DF?
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Drip Factor
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What is DD?
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Desired Dose
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What is DOH?
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Dose on Hand
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What is VTA?
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Volume to be Administered
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What is DPM?
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Drops per Minute
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In both VTA and DPM formulas, what is always positioned at the upper left?
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VOH
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In both VTA and DPM formulas, what is always positioned at the upper right?
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DD
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In both the VTA and DPM formulas, what is always positioned at the bottom center?
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DOH
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In the DPM formula concerned with calculating per-hr/min maintenance drips, what factor is added to the top center between VOH and DD?
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DF(drip factor)
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If you know how to calculate VTA, what is the single factor you need to add to the formula to calculate DPM?
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add DF to the top center between VOH and DD
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What is TIM?
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Time in Minutes
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What is a Drip Factor (DF)?
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gtts/min of the particular drip set you're using
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three kinds of drug calculations that are useful to paramedics
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The first is concerned with finding the Volume to be Administered. The other two pertain to calculating drip rates for either "per-hr/min" or "volume-over-time" infusion orders.
(1) VTA - find Volume to be Administered (2) gtts/min - when the per hr/min dosage is given (3) gtts/min - for volume over a given timeframe |
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With a standard microdrip set (60 gtts/ml), the number of drops administered per minute always equals...
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the milliliters delivered per hour.
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How many ml/hr will a microdrip set to 30 gtts/min deliver?
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30 ml/hr
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How many ml/hr will a microdrip set to 43 gtts/min deliver?
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43 ml/hr
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How many ml/hr will a microdrip set to 28 gtts/min deliver?
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23 ml/hr
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How many ml/hr will a microdrip set to 120 gtts/min deliver?
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120 ml/hr
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If you needed to administer exactly 75 ml/hr via a microdrip set, how many drops per minute would you administer?
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75
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If you needed to administer exactly 12 ml/hr via a microdrip set, how many drops per minute would you administer?
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12
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If you needed to administer exactly 180 ml/hr via a microdrip set, how many drops per minute would you administer?
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180
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To find the amount of a drug per milliliter (mg/ml) in a given solution, what mathematical operation would you perform?
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divide the total amount of the drug (eg: mg) by the total volume of the solution (eg: ml)
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Prior to dividing the amount of a drug by the volume of a solution, you may need to make what adjustment to the drug amount?
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convert it to the same measure that is specified in the orders (eg: gram to milligram, milligram to microgram, etc.)
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