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IV Drip Rate Calculations

Calculating IV Drip Rates (Continued)

Your treating a known diabetic, the patient is alert and oriented however their CBG reads "high". You start an IV and decide to run a normal saline infusion at 500 cc per hour.

How many drops per minute should you set the blood set?

500 (volume to infuse in cc) X 10 (drop factor of set) 60
(time in minutes)

First see if the numbers can be reduced: 500 X 10 = 500 X 1 = 500
60 6 6

Then divide the top by the bottom number : 500 / 6 = 83.3

Round that to 83 and that's the drops per minute for the infusion - 83 gtt/min

Test your knowledge before going on...

After your radio report to the hospital, the ER doctor wants the IV reduced to 300 cc an hour, what's correct the rate?

  1. 55 gtt/min
  2. 50 gtt/min
  3. 42 gtt/min
  4. 47 gtt/min

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