Jump to content

dimensional analysis problem HELP!

Posted

can someone pls give me the dimensional analysis for the following problem? I've been using it all along, but now I'm not doing something right...

Order: Heparin 40,000 units IV in 1 L 0.9% NS at 1,000 units/hr.

Calculate the rate in mL/hr ________________

please if anyone can help, I would appreciate it..

CRIMSON

Specializes in Cardiac, Derm, OB.

If the question is right, (it seems not ordred/available very well) here is what I get.

ml/hr= 1000ml/40,000u x 1000u/1hr = 1,000,000/40,000 = 25 ml/hr

hope that helps.

Daytonite, BSN, RN

Specializes in med/surg, telemetry, IV therapy, mgmt. Has 40 years experience.

order: heparin 40,000 units iv in 1 l 0.9% ns at 1,000 units/hr.

calculate the rate in ml/hr ________________

you want to end up with ml/hour:

1000 units/hour
(dose desired)
x 1 liter/40,000 units
(dose on hand)
x 1000 ml/1l
(conversion factor)
=
25 ml/hour
(amount to give)

thanks, you guys are awesome!