Help Please Math

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Specializes in A little of every kind of nursing.

Can anyone out there help with this med problem I would greatly appreciate it. Dr. orders a continuous insulin drip at 12units/hr. The pharmacy sends you NS 100/ml bag with 100 units of regular insulin. Calculate the IV flow rate________ml/hr:idea:

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100 units in 100ml solution equals 1 unit per 1 ml, therefore your rate would be 12 ml per hour if you want to infuse 12 units of insulin an hour.

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Using Ratio and Proportion:

Known ratio: 100 units = 100 mL

Unknown ratio: 12 units = x

Set up ratio and Proportion: 100 units : 100 mL = 12 units : x mL

100 units = 12 units

100 mL x mL

Cross Multiply: 100 units (x) = 12 units (100 mL)

x = 12 mL

(But there isn't any information about the drop factor to calculate drops per minute)

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the left margin took over and moved the proportions in the equation

(sorry, but that isn't the way that I set it up)

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Specializes in med/surg, telemetry, IV therapy, mgmt.

by dimensional analysis:

12 units
/
1 hour
(dosage ordered)
x
100ml / 100 units
(dosage on hand)

=
12ml / 1 hour

you will get better responses for questions about medication math problems if you post on these forums which are also part of allnurses.com https://allnurses.com/forums/f205/ - nursing student assistance forums or https://allnurses.com/forums/f50/ - the general nursing student discussion forum. there are lots of resources and web links listed there.

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Specializes in A little of every kind of nursing.

Thank you all for the help I get it!

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