Oral Medications: Scored Tablets
Calculate to the tenth and round to the nearest half tablet:
1.5 tablets = give 1 1/2 tablets
1.7 tablets = give 2 tablets
Oral Medications: ALL other oral pills
Calculate to the tenth and round to the whole number:
1.4 tablets = give 1 tablet
1.9 tablets = give 2 tablets
Oral Medications: When preparing ORAL LIQUIDS:
Calculate to the hundredth and round to the tenth:
2.32 mL = give 2.3 mL
2.36 mL = give 2.4 mL
Injections: When giving more than 1 mL:
calculate to the hundredth and round to the tenth:
1.26 mL = give 1.3 mL
1.38 mL = give 1.4 mL
Injections: When giving less than 1 mL:
calculate to the thousandth and round to the hundredth:
0.823 mL = give 0.82 mL
0.666 mL = give 0.67 mL
When working with fractions that have repeating decimal:
it is recommended that you leave the fraction intact while working through the problem:
1/6 = 0.16666 -- leave as 1/6 to calculate the problem
IV Problems: When calculating mg/min, mcg/hr, units/mL, mL/hr:
calculate to the hundredth and round to the tenth
IV Problems: When calculating titration factor:
carry out to the thousandth and round off to the nearest hundredth.
A patient has been taking 0.5g tablets of
acetaminophen (Tylenol) P.O. for
postoperative pain after an inguinal hernia
repair. If the patient took a total of 1,500
mg in 72 hours, how many 0.5-g tablets
0.5g: 1 tab :: 1.5g :
X tab= 3 tablets
The doctor's order reads glyburide 1.5 mg
3 tablets P.O. daily. What's the total dose
X = 4.5 mg
Your patient is receiving 500 mg of cefaclor oral suspension. The lable reads cefaclor 250mg/5ml, and the bottle contains 100ml. How many milliliters of cefaclor should you give? ,
x X 250 mg = 5 ml X 500 mg
X= 10 ml
The doctor orders 0.125 mg of digoxin (Lanoxin) elixir for a patient developing heart failure and pulmonary edema. The bottle is labeled 0.05 mg/ml. How many milliliters should the nurse administer?
0.05 mgX xml = 0.125 mg X 1ml
x = 2.5 ml
Your patient needs 400 mg of erythromycin oral suspension. the label reads erythromycin 200 mg/ 5 ml. How many milliliters should you give?
x X 200mg = 5 ml X 400 mg
The doctor orders 100 mg Dilantin oral suspension t.i.d. for your patient. The label reads Dilantin 125 mg/5ml. How many mililiters should you give?
100 mg X 5 ml = 125 mg X x
A doctor orders 25 g of lactulose (Cephulac) for a patient entereing a prehapatic coma. The bottle is labeled 10 g/15ml. How many milliliters should the patient receive?
10 g X xml = 15 ml X 25g
Your patients's order reads aspirin gr 10 P.O. daily, but the unit-dose package says aspirin 325 mg. How many tablets should you administer daily?
60 mg X 10 grains = x X 1 grain
x X 325 mg = 1 tablet X 600 mg
X= 1.846 all probably round to 2
A prescriptoin reads phenobarbital gr 1/4 take gr 1/2 t.i.d. P.O. daily. How many milligrams of phenobarbital should this patient receive?
60 mg X grain 1/4 = X x 1 grain
X x grain 1/4 = 15mg x 1/2
X= 30 mg
Your patient receives a prescription for 62.5 mcg of digoxin elixir P.O. daily. The elixir reads 0.05 mg/ml. How many milliliters of digoxin should you give?
X x 0.05 mg = 1 ml x 0.0625
patient is to receive 0.25 mg of Synthroid. The medication is only available in tablets that contain 125mcg each. How many tablet should the nurse administer?
X = 2 tablets
The doctor orders 0.05 mg Synthroid P.O., but the only Synthroid on hand is in tablets that contain 0.025 mg each. How many tablets should you give?
1 tablet X 0.05mg = 0.05 mg X x x=