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The physician writes an order for an IV of 1 L Lactated Ringer’s to infuse at 150 mL / hr. The IV tubing set has a drop...

The physician writes an order for an IV of 1 L Lactated Ringer’s to infuse at 150 mL / hr. The IV tubing set has a drop factor of 15 gtt/mL. What is the flow rate for the gravity IV? _________ gtt / min

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Answer #1

Answer:

Infusion rate is 150 ml/hr

To do all of these calculations in one step:

gtt/min = original order (ml/hr) x conversion hrs to mins (1 hr/60 min) x tubing (gtt/ml)

More simply:
gtt/min = (ml/hr) x (1 hr/60 min) x (gtt/ml)

(150 ml/hr) x (1 hr/60 min) x (15 gtt/ml) = 37.5 ml ~ 38 gtt/min

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