For instance, a patient weighting 160 pounds gets, by the Colorado method, (160/10)-2 = 14 ml/hour.
What is the drip rate? 10 mcg / kg / min, multiply by 2. In this case, they should be in micrograms. Since DTS method is consistently 6.67 %, multiplying 20 gtts/min by the decimal form of 6.67% or 0.667 gives you the value 1.32 the 20 gtts/min is off by, so subtracting 20 from 1.32 gives you a more exact drip rate. .I did the math (to make sure I was right) others might not. ), THEN 0.1875 = 3/16….
Dose available = 800 mg. 84 mg × 500 mL 800 mg. The variance is still 0.003%. DTs | 08.11.08 – 7:35 am | #, Can you change it on the page to the correct mix of 400 mg in 250 mL please? (220 POUNDS / 10) = 22, subtract 2 = 20 milliliters/hour. The formula for calculating this problem is: (dose x weight x 60) / concentration. MULTIPLY BY….. For IV Bag….. (Actual Concentration) Actually your method results in errors ranging from 6.67% at the lowest to 9.51% at the highest; always giving more dopamine than necessary. That constant error of 6.67% is because you’re dividing by 5, which is also multiplying by 0.2, instead of 0.1875. James, thanks so much!
15 mcg / kg / min, multiply by 3 20 mcg / kg / min, multiply by 4. For this example we will use a 50 kilogram patient. If you shave that down to just kg/5.33~mg/hr, you wind up with a very small margin of error (It increases as the weight increases, but for a 300lb pt, you are less than 1 gtt/hr off, assuming a 60 drop set.) As long, that is, as you want the 5 mcg/kg/min rate. ( Log Out / That’s what I thought, too, so I built a model (simple spreadsheet did for it) and ran the formulas head-to-head from a 50 lb patient through a 380 lb patient. 1000 …………………0.34 ……………….0.76. 250 ml (260) …….0.0884 ……………0.1976 so you could multiply the pt’s weight (kg) by 3, then divide by 16, that’ll give you the EXACT amount.. but easy at 2am? Lessee here, this guy weighs 220lbs, which times 2.2 is 100kg, and we need 5 mikes/kg so that’s 100 kg * 5 is 500 micrograms per minute, and there’s 400 milligrams of medicine in 250 milliliters of D5w so that makes 1600 micrograms per milliliter…. I mean, come on, it works for a 100 kg patient, but…”. In all this reading, and now of course I can’t find exactly where, but props to the Brady company and Dr. Bryan Bledsoe – I’m pretty sure it was in one of their Tomes – DTs came across something called the Colorado Down and Dirty Dopamine Ditty. Kilograms multiplied by 0.19 (exact is 0.1875) ( max 1.3% error diff. Step 1: Obtain the patient’s weight in kilogram. If anyone has different values as I may be wrong. Even at 15mcg. The DTs Cheat is even easier, and has a more consistant error rate. please let me know, as that would be very cool indeed. Doing the math again, it reduces to 3*kg/40=ml/hr=kh*(3/40)=kg/13.33 repeating~kg/13.33. When setting up this problem you need to ensure that both the dose and concentration are expressed in the same unit.
Step 2: Identity the ordered dose, which is always in microgram per kilogram per minute (mcg/kg/min). Rounded up 18.7 your actually only off now by 0.05 or 0.003%. Easy-peasy dopamine calculation for when you want the cardiac dose of 5mcg/kg/min: When your concentration is 1600 micrograms/milliliter, take the patient’s weight IN POUNDS, divide by 10, and subtract 2. 15 mcg multiply 18.7 by 3.0 = 56.1 gtts/min. Unfortunately, this gives a much larger error rate…all the way up to a bit over 20 gtts/hr for our 300lb pt. OR, OPTIONAL CONDENSED VERSION, 100 ml (110) …….0.0374 ……………0.0836 100 ml (110) 0.0374 0.0836 I apologize, i know I’m only a lowly EMT-B but shouldn’t it be, this guy weighs 220lbs, which times 2.2 is 100kg, and we need 5 mikes/kg so that’s 100 kg * 5 is 500 micrograms per minute, and there’s 800 milligrams of medicine in 250 milliliters of D5w so that makes 1600 micrograms per milliliter…. 10 mcg multiply 18.7 by 2.0 = 37.40 gtts/min
My preceptee-to-be has already expressed an interest in learning more in this fascinating area. CALCULATION OF DOPAMINE DRIP RATE. Marcus For instance, 2mcg/kg/min is a “renal” dose, appropriate for maintaining renal function, while 5mcg/kg/min is considered an inotropic or “cardiac” dose, and 15+mcg/kg/min is the alpha agonist or “vasopressor” dosage, useful for maintaining blood pressure. Easy Dopamine Calculation; IV Flow Rates; EKG Anatomy and Pathology; Medic-Tools; Links. 500 0.17 0.38