HESI Pharmacology Practice Exam With Answers (102 Solved Questions)

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HESI Dosage Calculations Practice Exam With Complete SolutionsUsing the conversion of 1 gram = 1000 mg: 0.1 gram = 100 mg 100 mg = 1capsuleA client has a prescription for inamrinone (Inocor) 0.75 mg/kg IV bolus tobe delivered over 3 minutes. The client weighs 80 kg. Inamrinone isavailable for injection 100 mg/20 ml. How many ml of inamrinone shouldthe nurse administer? (Enter numeric value only. If rounding is required,round to the nearest tenth.) - 12First calculate the mg/kg dosage needed: 0.75 mg x 80 kg = 60 mgneeded. Then calculate Desired / Have x ml 60 mg / 100 mg x 20 ml = 12ml.A client who had mitral valve replacement surgery receives aprescription for dextrose 5% in water with 0.5 grams of dobutamine in250 ml for IV infusion at a rate of 5 mcg/kg/minute. The client weighs 75kg. The nurse should program the infusion pump to deliver how manyml/hr? (Enter numeric value only. If rounding is required, round to thenearest tenth.) - 11.3First calculate the number of mcg/kg/minute: 5 x 75 = 375 mcg/minute.Calculate the number of mcg/hour: 375 x 60 minutes = 22,500mcg/hour. Next calculate the number of ml/hour needed to administer22,500 mcg/hour: 500,000 mcg : 250 ml :: 22,500 mcg/ X ml 500,000X= 5,625,000 X = 11.25 (rounded to 11.3 ml/hour).

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A healthcare provider prescribes a continuous infusion of 0.9% sodiumchloride with pancuronium (Pavulon) 25 mg/250 ml at a rate of 0.1mg/kg/hr for a client with coronary artery bypass grafting. The clientweighs 78 kg. The nurse should program the infusion pump to deliver howmany ml/hour? (Enter numeric value only. If rounding is required, roundto the nearest tenth. - 78First calculate the number of mg the client will receive in 1 hour: 0.1 mg x78 kg = 7.8 mg/hour. Next calculate the number of ml containing 7.8 mgof medication: 25 mg : 250 ml :: 7.8 mg : X 25 mg/ 7.8 mg :: 250 ml/X 25X= 1950 X = 78 ml/hour.A client scheduled for surgery is to receive an IV infusion of 0.9% sodiumchloride with prochlorperazine edisylate (Compazine) 10 mg/50 ml over30 minutes. The nurse should program the infusion pump to deliver howmany ml/hour? (Enter numeric value only.) - 100Calculate: 50 ml : 30 minutes :: X ml : 60 minutes 50/X :: 30/60 3000 =15X X = 100 mlThe healthcare provider prescribes an IV infusion of 0.9% sodiumchloride with 40 mEq KCl/500 ml to infuse over 3 hours for a client withhypokalemia. The nurse should program the infusion pump to deliver howmany ml/hour? (Enter numeric value only. If rounding is required, roundto the nearest whole number.) - 167

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To determine ml/hour: 500 ml : 3 hours :: as X ml : 1 hour 500/X :: 3/1500 = 3X X = 166.66 (rounds to)= 167 ml/hour.The healthcare provider prescribes a continuous infusion of 5% dextrosein 0.45% sodium chloride at 85 ml/hour. The IV administration setdelivers 10 gtt/ml. The nurse should regulate the drop rate to deliver howmany gtts/minute? (Enter numeric value only. If rounding is required,round to the nearest whole number.) - 14Volume/Time (minutes) x drop factor (gtt/ml) = 85 ml/ 60 minutes x 10gtt/ml = 14.16 = 14 gtt/minuteA client with cardiogenic shock weighs 220 lb and is receiving dopamineat the rate of 3 mcg/kg/minute. The solution strength available isdopamine 400 mg in 250 ml of D5W. The nurse should set the infusionpump to deliver how many ml/hour? (Enter numeric value only. Ifrounding is required, round to the nearest tenth.) - 11.3First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next,calculate the dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min.Convert mcg/min to mcg/hour, 300 mcg/min x 60 min=18,000mcg/hour. Convert mcg/hr to mg/hour, 18,000 mcg/hr = 18.0 mg/hour.Calculate the rate, 400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25= 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3 ml/hour.

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A client with hypertension who weighs 72.4 kg is receiving an infusion ofnitroprusside (Nipride) 50 mg in D5W 250 ml at 75 ml/hour. How manymcg/kg/minute is the client receiving? (Enter numeric value only. Ifrounding is required, round to the nearest tenth.) - 3.5A male client receives a prescription for ondansetron hydrochloride(Zofran) 4 mg IV to prevent postoperative nausea after an inguinal herniarepair. The medication is available in 2 mg/ml. How many ml should thenurse administer? (Enter numeric value only.) - 2Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X = 2The nurse is preparing to administer Hepatitis B Vaccine, Recombinant(Energix-B) 5 mcg IM to a school-aged child. The vaccine is labeled, 10mcg/ml. How many ml should the nurse administer? (Enter numeric valueonly. If rounding is required, round to the nearest tenth). - 1 or 0.5Use ratio and proportion, 5 mcg : X ml :: 10 mcg : 1ml10X = 5 X = 0.5 mlA client's daily PO prescription for aripiprazole (Abilify) is increased from15 mg to 30 mg. The medication is available in 15 mg tablets, and the clientalready received one tablet today. How many additional tablets should thenurse administer so the client receives the total newly prescribed dosefor the day? (Enter numeric value only.) - 1

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30 mg (total dose) - 15 mg (dose already administered) = 15 mg that stillneeds to be administered. Using the Desired/Have formula: 15 mg/15 mg= 1 tabletAt the end of the shift, the nurse is recording the fluid balance for a clientreceiving a continuous gastrostomy tube (GT) feeding. Based on theclient's records, how many ml should the nurse record for the total fluidbalance (intake - output) for the shift that started at 0700 and ended at1900? (Enter numeric value only.) (Click on each image asset foradditional information.) - 695The tube feeding is administered at 75 ml/hour for 11 hours (0700 - 1800)and then turned off for one hour because the residual is greater than 200ml. 11 hours x 75 ml/hr = 825 ml. Three doses of 20 ml of medication areadministered, with 10 ml of water used to flush the GT before and aftereach dose. 20 ml x 3 doses = 60 ml; 10 ml (flush) x 2 x 3 doses = 60 ml;so 825 ml + 60 ml + 60 ml = 945 ml. 250 ml of residual is removed andnot replaced. 945 ml - 250 ml = 695 ml total fluid balance (Intake -output).The nurse is administering a 250 milliliter (ml) intravenous solution to beinfused over 2 hours. How many ml/hour should the nurse program theinfusion pump? (Enter numeric value only.) - 125250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125 ml/hr

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