Dosage Calculations Practice Questions and Answers Graded A

Dosage Calculations Practice Questions and Answers Graded A 1 Dram = _____ mL - ANS- 4 1 gm = _____ gr. - ANS- 15 1 grain = ___ mg - ANS- 64.8 mg (60) 1/4 gr. = _____ mg - ANS- Answer: 15 Convert 1/4 to a decimal => 0.25, then solve 2 gm = _____ gr. - ANS- 30 A child weighs 10 lb 2 oz. What is their weight in kg? - ANS- 1. First, convert the 2 oz to lbs. 2 oz is 0.1 lbs. This gives you 10.1 lbs. 2. Now convert 10.1 lbs to kg. 3. Answer: 4.59 => 4.6 kg A patient has a bottle of warfarin (Coumadin) 5 mg tablets at home. After his most recent international normalized ratio (INR), the doctor calls and tells him to take 7.5 mg/day. How many tablets (scored) should the patient take? - ANS- 1.5 Calculate the patient's total urinary output for the shift. The patient has continuous bladder irrigation and a Foley catheter. : 3 Liters of bladder irrigation 1000: emptied Foley catheter 3600 mL 1100: 1 Liter of bladder irrigation 1200: 2 Liters of bladder irrigation and emptied 3250 mL from Foley catheter 1300: 1 Liter of bladder irrigation 1400: 1 Liter of bladder irrigation 1500: 1 Liter of bladder irrigation and emptied 3120 mL from Foley Catheter : 3 Liters of bladder irrigation 1900: emptied 4200 mL from Foley catheter - ANS- Intake: 2170 mL Remember, irrigation in NOT urine. You can not count it. The patient received 3000 mL of irrigation from . When the Foley cath was emptied at 10, there was a total of 3600 mL. 3000 mL of that was irrigation fluid. Only 600 mL was urine and considered output. 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 : Normal Saline IV 100 cc/hr - ANS- 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. Convert 0.3 g to kg. - ANS- 300 Convert 0.3 g to mg. - ANS- Answer: 300 mg Since milli means 1000, just move the decimal 3 spots to the right. Or, set up an equation as follows: We know 1 g = 1000 mg. 1 g/1000 mg = 0.3 g/x Solve for x by cross mulitiplying. Convert 0.625 to a fraction. - ANS- Write down 0.625 over 1. (0.625/1) Multiply the top and bottom by 1000. You are multiplying by 1000 because there are 3 digits after the decimal. If there were only 1 digit, you would multiply by 10. If there were 2 digits, you would multiply by 100. 4 digits would be 10000 and so on. After multiplying top and bottom by 1000, you will have 625 over 1000. Now, simplify this by dividing each by 125 (largest number that will go into each evenly). Now, you have 5 over 8, so 0.625 has been converted into the fraction 5/8. Note: If you're not sure what the largest number is that will go into each, just start with the one you know. In this instance you could start with 5 or 25. Just keep reducing until you can no longer divide each one with the same number and still get a whole number. Convert 0.75 to a fraction. - ANS- Write down 0.75 divided by 1. (0.75/1) Multiply the top and bottom by 100. You are multiplying by 100 because there are 2 digits after the decimal. If there were only 1 digit, you would multiply by 10. If there were 3 digits, you would multiply by 1000. 4 digits would be 10000 and so on. After multiplying top and bottom by 100, you will have 75 over 100. Now, simplify this by dividing each by 25 (largest number that will go into each evenly). Now, you have 3 over 4, so 0.75 has been converted into the fraction 3/4. Note: If you're not sure what the largest number is that will go into each, just start with the one you know. In this instance you could start with 5 or 25. Just keep reducing until you can no longer divide each one with the same number and still get a whole number. Convert 21.3 kg to lbs. - ANS- 46.86 Convert 22.2 kg to lbs. - ANS- 48.84 lbs Convert 2250 g to kg. - ANS- 2.25 => 2.3 Convert 3 L to mL. - ANS- Answer: 3000 mL Since milli means 1000, just move the decimal 3 spots to the right. Or, set up an equation as follows: We know 1 L = 1000 mL. 1 L/1000 mL = 3 L/x Solve for x by cross multiplying. Convert 8 lbs 4 oz to kg. - ANS- 3.8 kg Convert 89 kg to lbs. - ANS- 195.8 During your 12-hour shift from 7p - 7a, what is your patient's INTAKE and OUTPUT? : Jevity 50 mL/hr 0615: 50 cc free water flush : 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 - ANS- 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. Continuous fluids are constant and run your entire shift. gr. X = _____ mg - ANS- 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 How many grams are in a kilogram? - ANS- 1000 How many mcg in a mg? - ANS- 1000 How many mL in a cup? - ANS- 240 How many mL in a pint? - ANS- Answer: 480 (500) 16 oz x 30 mL = 480, but study materials say 500 How many mL in a tablespoon (T or tbs)? - ANS- 15 How many mL in a teaspoon (tsp)? - ANS- 5 How many mL in one ounce? - ANS- 30 How many ounces are in a pint? - ANS- 16 How many ounces are in a pound? - ANS- 16 How many ounces in a cup? - ANS- 8 How many pints are in a quart? - ANS- 2 How many pounds are in a kilogram? - ANS- 2.2