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The order is for D5W 500mL in 4 hours; the IV tubing has a drop factor...

The order is for D5W 500mL in 4 hours; the IV tubing has a drop factor of 20 gtt/mL. Additionally there is an order for adrenalin 0.4mg sub-Q every 20 minutes until symptoms resolve. The dose on hand is adrenalin 1 mg/2mL.
a. How many mLs of the adrenalin will you administer?
b. What route will you use?
c. What is the flow rate of the IV in mL/hr? d. What is the flow rate of the IV in gtt/min?

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Answer #1

a. The dose on hand is 1mg/2ml we need only 0.4mg at a time. So we need to administer 0.8ml.

b. Subcutaneous route, because the order is sub-Q

c. Flow rate of the IV in ml/hr = total volume of solution in ml / total number of hours to run = 500 / 4 = 125ml/hr

d.The formula for calculating the IV flow rate (drip rate) is total volume (in mL) divided by time (in min), multiplied by the drop factor (in gtts/mL), which equals the IV flow rate in gtts/min.

time in minutes is 4x60 = 240

Flow rate of IV in gtt/min = 500ml/240min x 20 gtt/min = 41.7 gtt/min ie,42gtt/min.

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