I am taking a medical assistant course and it seems that I'm never going to get the hang of converting dosages. Has anyone else ever had this trouble? Here is a sample question. If someone can answer it, will you provide how you came to the solution of the answer? Thank you so much! Dr orders 3mg of Ativan IM. You have a 10mL vial of Ativan 2mg/mL on hand. How many mL will you give the patient?
2006-09-17 19:17:21 · 7 answers · asked by SoCalGal75 3 in Science & Mathematics ➔ Medicine
one and one half ml from the vial
each ml contains 2 mg if
(1 ml / 2 mg ) = (x ml / 3 mg)
set up the two fractions and solve for x
x ml = 3 / 2
x = 1 1/2 ml
2006-09-17 19:22:00 · answer #1 · answered by Roy G. Biv 3 · 2⤊ 0⤋
1.5ml
the doctor ordered 3 mg
you have a 10ml vial of 2mg/ml
if 2mg is in a ml then the 3rd mg is .5 ml
2006-09-18 02:31:13 · answer #2 · answered by Keanu 4 · 1⤊ 0⤋
You want 3mg
The vial has a solution of concentration 2mg/mL
3mg * (mL/2mg) = 1.5 mL
...........¯¯¯¯¯¯¯
........--- rearrange this so that the units cancel the way you want them to
if you wanted to find the total mass in the vial you're starting with
10mL * 2mg/mL = 20 mg
see how the units cancel on that one?
2006-09-18 03:00:54 · answer #3 · answered by Scott S 2 · 1⤊ 0⤋
you have 2 mg per 1 ml....so you set the equation up 2mg/1ml=3mg/x. If you cross multiply you get 2mg*x= 3mg*ml then you divide both sides by 2mg which leaves you with 1.5ml.
2006-09-18 02:22:33 · answer #4 · answered by angeliquedesjardins 3 · 2⤊ 0⤋
lucky lorazepam does not usually come in 10 vials
How bout 1.5 ml
2006-09-18 02:22:15 · answer #5 · answered by Rock Music 1 · 1⤊ 0⤋
1.5 mL.
You must be a cheerleader crosstraining into nursing, yes?
2006-09-18 02:25:05 · answer #6 · answered by David S 5 · 1⤊ 1⤋
1.5ml.
Anyway thanks for 2 points
2006-09-18 13:15:15 · answer #7 · answered by Ajit 2 · 0⤊ 0⤋