Your patient is a 47 year old male with wide complex tachycardia. Medical command orders a...

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Your patient is a 47 year old male with wide complex tachycardia. Medical command orders a...

Your patient is a 47 year old male with wide complex tachycardia. Medical command orders a lidocaine infusion of 2 mcg/min. You choose a micro drip set ( 60 gtt/mL).

Dosage on hand for lidocaine 2 grams / 500 mL.

What is the concentration of this IV bag of lidocaine in mg/mL?

How many mL/he are needed?

How many drops per minute are needed?

How many drops per second are needed?

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Answer 1

Answer #1

Concentration of IV bag in hand= 2 gm/500 ml

= 2000 mg/500 ml ( as 1 g= 1000ml)

= 4mg/ml

Ordered lidocaine= 2 mcg /min

= 120 mcg/ hr (1 mg = = 1000 mcg

= 0.12 mg/hr

4 mg in 1 ml

Then 0.12 mg will be in= 0.03 ml

Hence ordered lidocaine infusion in ml/ hr = 0.03 ml/hr

Infusion rate in gtts/min= ( total volume in ml/infusion time) X drip rate in gtts/ml

= (500/60) X 60

= 500 gtt/min

= 8.5 gtts/second

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Answer 2

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