Transcript Fun Drug Test to Take

Fun Drug Test to Take
OK, so it isn’t all that fun, but you just as
well have a good attitude about it.
Drug Test for fun!
1. Ordered: Trilafon 24 mg po bid.
Available: Trilafon concentrate labeled
16 mg/5 ml.
How many ml will you administer?
Answer
 Ratio-proportions:
24 mg : x = 16 mg : 5
ml
16 x = 24 X 5 = 120
x = 120 16
x = 7.5 ml
 Formula method:
D/H x Q = X
24 x 5 = X
16
1.5 x 5 = 7.5 ml
Drug Test for fun!
1. Ordered: SoluMedrol 100 mg IM q8h
Available: Vial 1 ml in size labeled 125
mg SoluMedrol/3 ml
How many ml will you administer?
What size syringe is best to administer
this dose?
Answer
 Ratio-proportion
method:
100 mg : x = 125 mg :
3 ml
125 x = 300
x = 300 125
x = 2.4 ml
 Formula method:
D/H X Q = X
100 125 X 3 ml = x
0.8 X 3 = x
2.4 ml = x
Drug Test for fun!
1. Ordered: Ampicillin 400 mg IM q6h
Available: Vial with powder. Label
reads: For IM injection, add 3.5 ml
diluent (read accompanying circular).
Resulting solution contains 250 mg
Ampicillin per ml. Use solution within
one hour.
Answer; ampicillin
 Ratio-proportion
method:
250 mg : 1 ml = 400
mg : x
400 = 250 x
400  250 = 1.6 ml
 Formula method:
D/H x Q = X
400 mg x 1 ml = X
250 mg
1.6 ml = X
Drug Test for fun!
1. The physician orders Lasix 20 mg IV stat
for a child weighing 34 lbs. The pediatric
handbook states that 1 mg/kg is a safe
initial dose. Should you give this dose?
Answer: Lasix
 34 lbs. X 1kg/2.2 lbs = 15.5 kg
 15.5 kg X 1 mg/kg = 15.5 mg
 The does is too high, you need to call the
physician.
Calculations based on BSA
 The formula for calculating child's dosage
is

Child's BSA X adult dosage
1.7 M2
Calculations based on Body
Surface Area (BSA)
 Example: The child has a BSA of 0.67 M2.
the adult dose is 40 mg. The physician
ordered 8 mg. Is the dosage correct?
 0.67 X 40 = 26.8 = 15.8 mg
1.7
1.7
Drug Test for fun!
1. A child with a BSA of 0.32 M2 has an
order for 25 mg of a drug with an average
adult dose of 60 mg. Calculate the child's
dosage. Is the physician's order correct?
Answer, BSA
 60 mg x 0.32 = x
1.7
11.3 mg = x This dose is too high
Drug Test for fun!
1. Ordered: Infuse 2 L of Lactated Ringers
solution in 24 hours. The administration
set has 12 gtts/ml. How many gtts/min
will you administer the IV?
Answer; 2L LR
 2000 ml X 12 gtts/ml = x
24 hr
60 min/hr
24000 = x
1440
 16.7 gtts/min or 17 gtts/min = x
Drug Test for fun!
1. Ordered: D5W 50 ml with 20 mEq KCl
to infuse at 8 mEq KCL/hr per IV pump.
How many ml of solution will you
administer per hour?
Answer; 8 mEq KCL
Ratio-proportion:
20 mEq : 50 ml = 8
mEq : x
20 x = 400
x = 400/20 = 20
ml/hr
Fraction:
20 mEq = 8 mEq
50 ml
x
20 x = 400
x = 400/20 = 20
ml/hr
Drug Test for fun!
1. Ordered: Gentamycin 100 mg/100ml
IVPB q8h. The IV handbook states that
it should be given over 90 min. What
rate will you set on your IV pump?
Answer; Gentamycin
 100 ml = x
90 min
60 min
90 x = 6000
x = 6000/90
x = 66.7 or 67 ml/hr
Drug Test for fun
9. Ordered: Nafcillin 900 mg IVPB q6h for
a 27 kg child. Available: Dry powder in
1 g vials. Admin.. set: 60 gtts/ml. The
vial states to reconstitute with 3.4 ml
diluent to produce 1g/4 ml with
concentration of 250 mg/ml. The
medication book recommends giving a
concentration of 100 mg/ml, duration of
infusion 10-20 minutes.
Naficillin Continued
How many milliliters of the reconstituted
medication will you draw up for each dose?

How much fluid will you need to add to the
medication drawn up in question 9 to achieve the
recommended concentration?

 What rate (gtts/min) will you infuse the
medication in question 9?
Answer: Nafcillin Recon
 How many milliliters of the reconstituted
medication will you draw up for each
dose?

 250 mg : 1 ml :: 900 mg : x
 250 x = 900
 x = 900/250 = 3.6 ml
Nafcillin continued
 How much fluid will you need to add to
the medication drawn up to achieve the
recommended concentration?
 100 mg : 1 ml :: 900 mg : x
 100 x = 900
 x = 900/ 100 = 9 mls (total needed)
 9 ml - 3.6 ml = 5.4 ml (amount to add
Nafcillin; continued
9ml over 10 min with 60 gtts/min set
 9 ml X 60 gtts = 540 gtts = 54 gtts/min
10 min
ml
10 min
 9ml over 20 min with 60 gtts/min
administratin set
 9 ml X 60 gtts = 540 gtts = 27 gtts/min
20 min
ml
20 min
 Answer: 27 - 54 gtts/min
Answers may be found on:
 http://classes.kumc.edu/son/nurs420/clinica
l/basic_practice_.htm