Dosage Calculations ANSWER KEY



Dosage Calculations ANSWER KEY1.Convert the following:?400 mg= 0.4 g5 g = 5000 mg?0.5 g= 500 mg?1300 mg= 1.3 g0.003 g = 3 mg 1 t = __5__ mL 1 oz = __30___ mL 23 mcg = _0.023_ mg 15 mL = __1__ T or __1/2_ ozUnless specified, each calculation is for a single dose of medication.Directions: #2 – 11 Show formula set-up for dosage calculations. Identify answer with correct units of measurement (i.e., tabs, mL, units)2.The physician orders Tylenol 650 mg PO q8h. The label reads as follows: Each capsule contains 325 mg. How many capsules will you give this patient???650 mg x 1 cap = 2 caps???? 325 mg3.The order reads Tenormin 50 mg PO daily. Each tablet contains 0.025 g. How many tablets will you administer????0.025 g = 25 mg 50 mg x 1 tab = 2 tabs 25 mg?4.A patient has an order for morphine sulfate 15mg IV q 2 hr prn pain. The supply is labeled morphine sulfate 10 mg/mL. How many mL would you administer????15 mg x 1 mL = 1.5 mL 10 mg If the total volume is 5 mL of morphine sulfate, how many full doses are available? _____3______ ?5.The physician’s order: Furosemide 40 mg PO bid. The drug is supplied in 20 mg tablets. What would the patient’s daily dose be if it were expressed in grams?? 40 mg x 2 doses = 80 mg = 0.080 = 0.08 g6.The physician writes the following prescription: Vantin 200 mg PO q 12h for 14 days. The label states Vantin is supplied 100 mg/5 ml. How many mL will you give this patient?? 200 mg x 5 mL = 10 mL 100 mg7. The label reads Heparin Sodium 10,000 units/mL. The order is for Heparin 6,000 units q6h sc. How many milliliters will you administer to the patient? 6000 units x 1 mL = 0.6 mL 10,000 units8. The physician ordered 2.5 mL of an expectorant. The label reads 325 mg/tsp. How many milligrams are contained in this dose? 1 t = 5 mL 325 mg = X 2.5 mL x 325 mg = 162.5 mg 5 mL 2.5 mL 5 mL X = 162.5 mg9. The physician ordered 180 mg of Dilantin po q8h. The patient weighs 98 lb. The label of the drug reads 250 mg per 5 mL. How many milliliters will you administer to this patient per dose?180 mg x 5 mL = 3.6 mL 250 mg10. (4 answers)The physician ordered Amoxicillin 10 mg IM q6h. Amoxicillin is supplied in 125 mg per 5 mL. How many milliliters will you administer per dose?10 mg x 5 mL = 0.4 mL 125 mg 0.4 mLChoose the correct syringe and indicate the dose with an arrow or line on the syringe.Is the needle size on the selected syringe correct? (Yes or No) ___No________If no, what size needle would you select to change? ____1 – 1 ? inch____263969556644800(You could select the 3 mL syringe and then the needle length would be correct.)11. The antibiotic, Zithromax, is ordered to treat a patient with a bacterial exacerbation of COPD. The order is:Zithromax 500 mg PO as a single dose on day one, followed by 250 mg once daily on days 2 through 5.How many milligrams will the patient receive by the completion of the prescription?Day 1 = 500 mg + 4 days(250 mg) = 1500 mg for 5 days12. Identify the Insulin brand name on the following label. _Humulin R___13. Draw an arrow on the syringe to indicate the following order: Humulin R U-100 15 units subcut a.c. breakfast.185293039179500 ................
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