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TEST BANK FOR BSN 215 BASIC
DOSAGE CALCULATIONS 90
QUESTIONS WITH ALL CORRECT
ANSWERS.
A patient has an order for Chloromycetin, 500 mg every 6 hours. The drug comes in 250 mg capsules. What would the nurse administer? 2 tabs
A nurse is to administer 150 mg of a drug intramuscularly. The label on the multidose vials reads 100 mg/mL. How much would the nurse give? 1.5 mL A nurse is to administer 30 mg of furosemide (Lasix) to a client with congestive heart failure (CHF). The vial contains 40 mg/mL. Which is the correct dose to administer? 0.75 mL The nurse is providing discharge teaching for a client who has been prescribed 600 mg of an oral liquid medication. The mother shows the nurse the label of the
medication, which reads: 250 mg/mL. The nurse would instruct the mother to give how many milliliters? 2.4 mL
A child is to receive 500 mg of an antibiotic suspension. The label on the bottle reads 250 mg/5 mL. The nurse should administer how much of the suspension in one dose? 10 mL
A health care provider orders 250 mg of an antibiotic suspension. The label on the suspension reads "500 mg/5 mL." How much would the nurse administer? 2.5 mL
The client is to be given ascorbic acid 1 g daily by mouth. The medication comes in a container labeled, "Ascorbic Acid 250 mg tablets." How much will the nurse give? 4 tabs
A client is being treated for congestive heart failure (CHF) and is to receive 0. milligrams of digoxin, which is available in 250-microgram tablets. The nurse would correctly administer how many tablets? 2 tabs
The nurse is to administer 25 mg of meperidine (Demerol). The vial states that it contains meperidine 50mg/1 mL. How much medication should the nurse draw up for the ordered dosage? 0.5 mL
A nurse needs to convert 3 fluid ounces to the metric system equivalent. The nurse performs the calculation to find which result? 90 mL
A client has been prescribed a one-time dose of 4 mg morphine IV. The medication is available in ampules of 10 mg/mL. What volume of morphine should the nurse draw up? 0.4 mL
A physical orders 75 mcg of a drug IM daily. The drug is available in a vial labeled 0.5 mg in 5 mL. How many mL with the patient receive? 0.75 mL
The patient is to receive 750 mg of a drug PO daily. The drug bottle is labeled 0.5 g in 5 mL. How many Tbs will the patient receive? 0.5 Tbs The order is for 1 g of a medication PO BID. The pharmacy sends the medication labeled 200 mg in 5 mL. How many mL should the nurse administer? 25 mL
The physician orders to administer Prednisolone oral solution 0.03 g daily. The label reads Predisolone 15 mg per 5 mL. How many tsp will the patient receive? 2 tsp
Order: D5LR 1250 mL IV over 8 hours. What is the infusion rate in mL/h? Answer: 156 mL/h Divide 1250 by 8 156.25 => 156 Order: Amoxil 200 mg q 8 h Have: 50 mg/ml Label: 20 to 40 mg/kg/day in divided doses every 8 hours. The patient weighs 10 kg. Is this order safe?
- First, calculate the minimum and maximum dose per day. The minimum amount would be 200 mg. (20 x 10) The maximum amount would be 400 mg. (40 x 10)
- Now, since the dose is given every 8 hours, divide the minimum and maximum by 3, since 3 doses can be given in one day (24 hours). The minimum single dose is 66.7 mg, and the maximum single dose is 133.3 mg.
- NO, the ordered dose is not safe. The doctor ordered 200 mg for a single dose which is more than the maximum allowed single dose of 133.3 mg.
How many mL in a teaspoon (tsp)? 5 How many grams are in a kilogram? 1000 How many teaspoons are in a tablespoon? 3 How many ounces are in a pound? 16 How many pounds are in a kilogram?
Convert 21.3 kg to lbs.
Convert 0.3 g to kg. 300 How many ounces in a cup? 8 How many mL in a cup? 240 Convert 22.2 kg to lbs. 48.84 lbs Convert 89 kg to lbs.
Order: D5W IV at 125 mL/h Drop factor: 10 gtt/mL
Calculate flow rate in gtt/min. Answer: 21 gtt/min (volume in mL/time in min) x drop factor (125/60) x 10 2.08 x 10 = 20.8 => 21 Convert 2250 g to kg. 2.25 => 2. A child weighs 10 lb 2 oz. What is their weight in kg?
- First, convert the 2 oz to lbs. 2 oz is 0.1 lbs. This gives you 10.1 lbs.
- Now convert 10.1 lbs to kg.
- Answer: 4.59 => 4.6 kg Convert 8 lbs 4 oz to kg.
250 mL divided by 4 is 62.5. Round to the nearest whole number. Order: Ampicillin 500 mg IV in 50 mL in D5 1/2NS in 30 minutes. What is the infusion rate in mL/h? Answer: 100 mL/h Divide total mL by total minutes, then multiply by 60. (total mL ordered/total minutes) x 60 minutes (50 mL/30 min) x 60min 1.67 x 60 = 100.2 => 100 mL/h OR Convert 30 min to hours. 30 min = 0.5 hours 50 mL/0.5 = 100 mL/h During your 12-hour shift from 7p - 7a, what is your patient's INTAKE and OUTPUT?
2000-0600: Jevity 50 mL/hr 0615: 50 cc free water flush 2100-0215: Two 250 mL of red blood cells 0115: 20 cc saline flush IV 0300: Zosyn IV 50 mL 0400: 10 cc saline flush IV Continuous Fluids: Heparin 10 mL/hr Normal Saline 100 mL/hr Ileostomy: 300 mL NG suction: 50 cc Urine: 1850 mL Wound vac: 100 cc Intake: 2450 mL Output: 2300 mL Remember that 1 cc = 1 mL Notice that the Jevity is running at 50 mL/h for 10 hours, so that is a total of 500 mL.
You need to administer 250 mg of erythromycin (Erythrocin) PO. You have on hand 0.5 g tablets. How many tablet(s) will you give?
1 grain = ___ mg 64.8 mg (60) gr. X = _____ mg Answer: 600 mg In this problem, X represents the roman numeral 10. So, the question is asking how many mg in 10 grains. 1 grain = 60 mg, so 10 grains = 600 mg 1 gm = _____ gr. 15 2 gm = _____ gr. 30
Calculate the patients INTAKE during your 12-hour shift. 0800: Two pieces of toast, 2 cups of oatmeal, 8 oz yogurt, 12 oz orange juice, 2 oz grits 1000: Two 8 oz of coffee w/ 2 oz of cream in each 1100: 24 oz of ice chips 1200: IV infusion of Zosyn 50 mL, 2 mL IV push Zofran and 10 cc saline IV flush 1230: house salad, 12 oz soda, three 12 oz popsicles 1400: One pack of red blood cells (250 mL) 1500: 2 mL Morphine and 10 cc saline flush IV 1715: 10 cc saline flush IV 1600-1900: Normal Saline IV 100 cc/hr Intake: 3394 mL Remember, intake is measured in mL. Convert all ounces to mL. 1 oz = 30 mL Also, ice melts to ONE HALF the total ounces. So, 24 ounces of ice melts to 12 ounces. Do NOT count solids like the toast, oatmeal, yogurt, grits, or salad. It has to be liquid at room temp to be counted.
So, you need 3 of the 5 gr. capsules to make 15 gr. Order: liquid suspension Aspirin 180 mg p.o. daily Supply: gr. V per 2 mL How many mL will you administer per dose? Answer: 1.2 mL First, convert 180 mg to gr. So, 180 mg = 3 gr. Set up your equation. I set up my equations by putting what I NEED = to what I am SUPPLIED x (mL needed) over 3 gr. = 2 mL over 5 gr Solve for x by cross multiplying. Order: Diazepam 5 mg IV for q 6 h for agitation as needed Supply: gr. iss/2mL (the ss has a line over the top) How many mL will you administer per dose? Answer: 0.1 mL
iss(line over the ss) are Roman numerals. i = 1 and ss with a line over them means 1/2 or 0.5. So, if you see iss, it means 1 1/2 or 1.5. So, the supply is 1.5 grains per 2 mL. First, convert the 5 mg to gr. So, 5 mg = 0.08 gr. Set up your equation. I set up my equations by putting what I NEED = to what I am SUPPLIED. x(mL needed) over 0.08 gr. = 2 mL over 1.5 gr. Solve for x by cross multiplying. The patient's output is 2025 mL during your 12-hour shift. If the patient had an intake of 3394 mL, what should you monitor the patient for as the nurse? A. Fluid volume overload B. Dehydration C. These findings are within normal limits. Continue to monitor. A Order: Morphine 1/8 grains IV q 4 h p.r.n. for pain Supply: 2 mg/mL
