Dosage and calculation help

Nicky143 · Dec 29, 2013

hello everyone. Could anyone pleased show me the proper way to calculate this problem? Thank you in advance.

If the dosage regimen for bleomycin sulfate is 0.25 to 0.50 units/kg IM, what is the minimum dosage for a patient weighing 145 lb?_______

I converted 145 lb to kg : 65.9 kg

0.25 units/kg= x/65.9 kg

x=16.5

0.5 units/kg = x/65.9 kg

x=33

The physician orders packed red cells, 2 units, to be given over 6 hours (250 mL/unit). The drop factor is 10 gtt/mL.

Drop rate/min? ___________

250 ml/hrx10 gtt/mL

60(6)

250/36

= 7 gtt/min (2) = 14 gtt/min

[TABLE=class: MsoNormalTable]

[TR]

[TD] One L of D5W contains 10,000 units heparin sodium. An order reads, "500 units/hr IV." The drop factor is 60 gtt/mL. What is the drop rate/min? ___________

[/TD]

[/TR]

[/TABLE]

500 units/hr/60 gtt/min

60

= 500? that's too much I think

Esme12, ASN, BSN, RN · Dec 29, 2013

thread moved for best response.

Check out this site.....DosageHelp.com - Helping Nursing Students Learn Dosage Calculations

chare · Dec 29, 2013

You need to convert units to milliliters, then you can calculate your infusion rate and drops/minute.

amoLucia · Dec 29, 2013

We will HELP with homework but we won't do it for you. Tell us what you've done or think and we'll work to help you.

OCNRN63, RN · Dec 29, 2013

What have you learned in your medication class regarding medication administration calculations? Show us your work so far on these problems.

Nicky143 · Dec 30, 2013

One L of D5W contains 10,000 units heparin sodium. An order reads, "500 units/hr IV." The drop factor is 60 gtt/mL. What is the drop rate/min? ___________

for this problem:

i converted 1 L to 1,000 mL

10,000 units/500 units = 20

1,000 mL x 60 gtts/min

60 min (20)

= 50 gtt/min?

Guests · Dec 30, 2013

hello everyone. Could anyone pleased show me the proper way to calculate this problem? Thank you in advance.
If the dosage regimen for bleomycin sulfate is 0.25 to 0.50 units/kg IM, what is the minimum dosage for a patient weighing 145 lb?_______
I converted 145 lb to kg : 65.9 kg
0.25 units/kg= x/65.9 kg
x=16.5 ## strictly speaking, x=16.5 units (not just a unitless number). Also, there are only two significant figures in your you factors so there should only be two sig figs in your answer. That is, round 16.5 to 17
0.5 units/kg = x/65.9 kg
x=33 ## strictly speaking, x=33 units (not just a unitless number)
The physician orders packed red cells, 2 units, to be given over 6 hours (250 mL/unit). The drop factor is 10 gtt/mL.
Drop rate/min? ___________
250 ml/hrx10 gtt/mL
60(6)
250/36
= 7 gtt/min (2) = 14 gtt/min
## 2 units x (250 mL/unit) x (10 gtt/1 mL) / 6 hr x (1 hr/60 min) = 14 gtt/min
[TABLE=class: MsoNormalTable]
[TR]
[TD] One L of D5W contains 10,000 units heparin sodium. An order reads, "500 units/hr IV." The drop factor is 60 gtt/mL. What is the drop rate/min? ___________
[/TD]
[/TR]
[/TABLE]
500 units/hr/60 gtt/min
60
= 500?
## (500 units) x (1 L/10000 units) x (1000 mL/1 L) x (60 gtt/1 mL) / 1 hr x (1 hr/60 min) = 50 gtt/min

The solutions are bolded in italics

Nicky143 · Dec 30, 2013

The solutions are bolded in italics

Thank You ♪♫ in my ♥ :yes:

Guests · Jan 3, 2014

Thank You ♪♫ in my ♥

You're welcome.

My biggest piece of advice is: Show all of the units, all of the time.

Just as a word can mean many different things without the context of a sentence, numbers mean nothing without the context of units.

The easiest way to get confused or to make a silly math mistake is to multiply or divide by a number that doesn't have units attached to it.

I'm very, very good at math, chemistry, and physics... and yet I still take no shortcuts when I do these problems... I show every unit and every step... because I'm prone to silly mistakes when I don't.