18 3 STEPS TO DOSAGE CALCULATION: 1) Convert to units of same system and similar unit2) STOP AND THINK3) Desired over amount on hand times quantityEX: desiredamount on hand x quantity
19 SAMPLE PROBLEMS 1) Convert: 300 mg to grams 2) Convert: 120 mg to grains3) Convert: 30 gr to grams4) A child who weighs 55 pounds weighs ____kilograms?
20 5) A patient is restricted to four 8-ounce glasses of water per day 5) A patient is restricted to four 8-ounce glasses of water per day. The nurse knows that the patient’s fluid intake is restricted to ____ mls per day.6) The nurse administered aspirin gr v. She knew this was equivalent to _____milligrams(s).
21 7) Potassium chloride tablets are available in 300 mg doses 7) Potassium chloride tablets are available in 300 mg doses. The physician prescribed gr v. Give ____ tablet(s).8) The physician prescribed Capoten, 1.5 grams daily in three equal doses, for hypertension. The nurse would give _____ 1000 mg tablet(s) three times a day.
22 9) Lasix 30 mg, IM, is prescribed as a diuretic 9) Lasix 30 mg, IM, is prescribed as a diuretic. Lasix was available as 40 mg/mL. The nurse would give ______mL.10) Scopolamine 0.3 mg was ordered subcutaneously as a preanesthetic medication. The medication was available in ampules containing grains 1/200 per mL. The nurse would give _____mL.
23 11) The physician prescribed 25 mg of Librium, IM 11) The physician prescribed 25 mg of Librium, IM. Add 2 mL of diluent to yield 100 mg/2ML. The nurse should give _____ mL.12) The physician prescribed 5 mg of Garamycin for a child. The medication is available as 20 mgs/mL. To give 5 mg, you would give ____ mL.
24 PRACTICE, PRACTICE, PRACTICE And HOLLER if you need help!