Drug Orders and Dosage Calculations

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Drug Orders and Dosage Calculations:

The physician has ordered Lanoxin elixir 90 mcg p.o. daily. The available medication contains 0.05 mg/10 ml.

WORKING
If 0.05mg is contained in 10ml
90mg would be contained; = {(90 /0.05)*10}
=180ml
How many milliliters will you administer? __180ml__________________________
The physician has ordered ASA 650 mg p.o. Q 4 hr. for temperature higher than 101° F. The medication is supplied in gr V tablets
How many tablets will the patient receive per dose?
650 mg
-24/4
=6 times
-total = 6*650
=3900mg
1 tablet =60mg
- (3900/60)
=65 tablets
_____________________
Refer to question # 2 above. What is the maximum number of tablets the patient can receive in any 24 hour period?
Duration is 4 hours
-(24/4)
=6 times a day
=(65/6)
=10 tablets
The physician has ordered Synthroid 150 mcg p.o. QD. The medication is supplied as 0.15 mg/tablet.
How many tablets will you administer?____1000 tablets_________________________
Total =150mg
1 tablet =0.15 mg
=(150/0.15)
=1000 tablets
The physician has ordered KCL 30 mEq p.o. daily. The medication is supplied as 40mEq/15 ml.
How many milliliters will you administer?___________________________
40mEq=15ml
30mEq= {(30*15)/40}
=11.25ml
The physician has ordered Neupogen 360 mcg SQ QD. The medication is supplied as 300 mcg/ml.
How many milliliters will you administer?
___________1.2ml________________
360mg
360/300
=1.2ml
The physician has ordered amoxicillin 0.1 g p.o. q8h. Drug available is amoxicillin oral suspension, 200 mg/5ml.
1g=1000mg
0.1g= 100mg
-24/8
=3 times
-100*3
=300mg
-[(300/200)*5]
={(100/200)*5}
=7.5ml
How many milliliters will the patient receive in 24 hours?___7.5ml____________
Order: Cefazolin (Ancef) 500 mg IM q6h.
Available: Ancef powder to which you will add 2.5 ml sterile water, which will be equivalent to 1 gram.
1g=1000mg
-500mg=0.5g
-24/6
4 times
-o.5*4
=2g=200mg
-2.5*2
=5ml
How many milliliters will you give per dose ?____5ml_____________________
9. Order: meperidine (Demerol) 75 mg IM q3h prn pain.
Available: meperidine 100 mg/ml.
24/3
=8 times
-75*8
=600mg
-(600/100)
=6ml
How much will you give per does?________6_____________ml.
Order: Lopressor (Metoprolol) 100 mg po, bid.
Available: Lopressor, 50 mg tablets.
The client is going on a 2 week vacation & must have adequate medication to last him until he returns home. How many tablets will he need to have to cover the time of his vacation?
100/50
2 tablets
Order: Tylenol 650 mg via nasogastric tube q4h prn temperature > 101.5.
Available: Tylenol elixir 160 mg/5mL.
How many milliliters will the nurse administer per dose?
650mg
24/4
=6 times
Total = 650*6
=3900mg
{(3900/160)*5}
121.875ml
Order: Nitrostat 0.3 mg sl stat.
Available: Nitrostat tablets labeled gr 1/200.

How many tablets will the nurse administer?
total = 300mg
available = 0.005=5 mg
300/5
=60 tablets
Order: Kanamycin (Kantrex) 1 g po q6h x 5 days....