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Test Bank for All HESI RN Dosage Calculations
Practice Exams Latest Update 2024-2025 1000
Questions and 100% Verified Correct Answers
Guaranteed A+ At First Attempt
0.9% normal saline with inamrinone (Inocor) 0.1 grams/100 ml is prescribed for a client
with heart failure. The medication is to be delivered at a rate of 400 mcg/minute. The
nurse should program the infusion pump to deliver how many ml/hour? (Enter numeric
value only. If rounding is required, round to the nearest whole number.) - CORRECT
ANSWER: 24
First calculate the number of mcg/hour: 400 mcg x 60 minutes = 24000 mcg/hour. Next
calculate the number of ml/hour needed to administer 24,000 mcg/hour: 100,000 mcg:
100ml :: 24,000 mcg : X 100,000/24,000 :: 100/X 100,000X = 2,400,000 X = 24 ml/hour.
A 180-pound adult male is admitted to the Emergency Center after receiving thermal
burns to 60 percent of his body. Using the Parkland formula of 4 ml/kg/24 hours, the
client should receive how many ml of fluid during the first 24 hours? (Enter numeric
value only. If rounding is required, round to the nearest whole number.) - CORRECT
ANSWER: 19632
Using the Parkland formula, the client's fluid requirements for the first 24 hours after
injury: 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent burn.
Convert 180 pounds to kg = .2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632 ml over the
first 24 hours.
A child who is scheduled for a kidney transplant receives a prescription for basiliximab
(Simulect) 20 mg IV 2 hours prior to surgery. The medication is available in a 20 mg vial
that is reconstituted by adding 5 ml sterile water for injection, and administered in a 50
ml bag of normal saline over 30 minutes. The nurse should program the infusion pump
to deliver how many ml/hour? (Enter numeric value only. - CORRECT ANSWER: 110
After reconstituting the medication vial, the nurse adds the 5 ml of medication to the 50
ml of sterile water to result in a 55 ml volume to infuse in 30 minutes. Using the formula,
Volume/Time = 55 ml / 0.5 hours = 110 ml/hour
,A child who weighs 55 pounds receives a prescription for atovaquone with proguanil
(Malarone Pediatric) 125 mg/50 mg PO daily. A drug reference states that children 11 to
20 kg should receive 1 pediatric tablet daily; 21 to 30 kg should receive 2 pediatric
tablets daily; 31 to 40 kg should receive 3 pediatric tablets daily; and greater than 40 kg
should receive 1 adult tablet daily with food. The drug is available as atovaquone 62.5
mg/proguanil 25 mg pediatric tablets. How many tablets should the nurse administer? -
CORRECT ANSWER: 2
Calculate each drug component dose, using the formula, D/H 125 mg / 62.5 mg
(atovaquone) = 2 combined with 50 mg / 25 mg (proguanil) = 2. The child should
receive 2 tablets.
A child with a urinary tract infection is receiving Cephalexin (Keflex) 100 mg suspension
PO QID. Keflex oral suspension is labeled 125 mg in 5 ml. How many ml should the
nurse administer? (Enter numeric value only. If rounding is required, round to the
nearest tenth.) - CORRECT ANSWER: 4
Using the formula Desired/Have available x Quantity: 100/125 x 5 = 500/125 = 4 ml
A client experiencing cardiogenic shock receives a prescription for an IV infusion of
0.9% normal saline with milrinone (Primacor) 10 mg in 100 ml at a rate of 46
mcg/minute. The nurse should program the infusion pump to deliver how many ml/hour?
(Enter numeric value only. If rounding is required, round to the nearest whole number.) -
CORRECT ANSWER: 28
First calculate the number of mcg/hour: 46 mcg x 60 minutes = 2760 mcg/hour. Next
calculate the number of ml/hour needed to administer 2760 mcg/hour: 10,000 mcg : 100
ml :: 2760 mcg : X 10, :: 100 / X 10,000X = 276000 X = 27.6 (rounded to) 28
ml/hour.
A client has a prescription for inamrinone (Inocor) 0.75 mg/kg IV bolus to be delivered
over 3 minutes. The client weighs 80 kg. Inamrinone is available for injection 100 mg/20
ml. How many ml of inamrinone should the nurse administer? (Enter numeric value only.
If rounding is required, round to the nearest tenth.) - CORRECT ANSWER: 12
,First calculate the mg/kg dosage needed: 0.75 mg x 80 kg = 60 mg needed. Then
calculate Desired / Have x ml 60 mg / 100 mg x 20 ml = 12 ml.
A client is receiving alprazolam (Xanax) 0.75 mg PO BID for anxiety. Alprazolam is
available in 0.5 mg scored tablets. How many tablets should the nurse administer?
(Enter numeric value only.) - CORRECT ANSWER: 1.5
Using the conversion of 1 gram = 1000 mg: 0.1 gram = 100 mg 100 mg = 1 capsule
A client is receiving an IV solution of sodium chloride 0.9% (Normal Saline) 250 ml with
amiodarone (Cordarone) 1 gram at 17 ml/hour. How many mg/minute of amiodarone is
infusing? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
- CORRECT ANSWER: Convert grams to mg, 1 gram equals 1,000 mg. Using ratio and
proportion - 1,000 mg : 250 ml :: X mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution
concentration of amiodarone. The infusion rate (ml/hour) x concentration (mg/ml)
divided by 60 minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 = 1.1 mg/minute.
A client is receiving dantrolene sodium (Dantrium) PO for malignant hyperthermia. The
maximum safe dose is 8 mg/kg/day in 4 divided doses. The client currently weighs 48.5
kg. What is the maximum safe dose the nurse should administer? (Enter numeric value
only. If rounding is required, round to the nearest whole number.) - CORRECT
ANSWER: 97
Determine the maximum number of mg this client should receive in a day: 48.5 kg x 8
mg/kg/day = 388 mg/day. Next determine how many mg the nurse should deliver each
dose: 388 mg/4 doses = 97 mg.
A client is receiving Heparin Sodium 25,000 Units in 5% Dextrose Injection 500 ml IV at
1,000 unit/hour per protocol for acute coronary syndrome (ACS). The client's partial
thromboplastin time (PTT) is 76 seconds. Based on the ACS protocol, the infusion
should be decreased by 100 units/hour for a PTT between 71 to 80 seconds. The nurse
should program the pump to deliver how many ml/hour? (Enter numeric value only.) -
CORRECT ANSWER: 18
, Adjust the infusion to 900 units/hour (1,000 units/hour minus 100 units/hour per
protocol). Using the formula, D/H x Q, 900 units/1 hour divided by 25,000 units x 500 ml
= 90/5= 18 ml/hour.
A client receives a prescription for an intravenous infusion 0.45% sodium chloride 500
ml to be infused over 6 hours. The nurse should program the infusion pump to deliver
how many ml/hour? (Enter numeric value only. If rounding is required, round to the
nearest whole number.) - CORRECT ANSWER: 83
Calculate using Volume/Time: 500 ml/6 hours = 83.3 ml/hour
A client receives a prescription for azithromycin (Zithromax) 500 mg PO x 3 days.
Azithromycin is available as 250 mg scored tablets. How many tablets should the nurse
administer per dose? (Enter numeric value only. - CORRECT ANSWER: 2
Using the formula, D/H 500 mg/250 mg = 2 tablets
A client returns to the nursing unit from surgery with a prescription for Lactated Ringer's
solution 1,000 ml to be infused over 10 hours. The IV administration set delivers 60
gtts/ml. The nurse should regulate the infusion to deliver how many gtts/minute? -
CORRECT ANSWER: 100
First convert hours to minutes: 10 hrs x 60 = 600 minutes. Using the formula
Volume/Time x drop factor: 1000 ml /600 minutes = 1.66666 x 60 = 100 gtts minute.
A client scheduled for surgery is to receive an IV infusion of 0.9% sodium chloride with
prochlorperazine edisylate (Compazine) 10 mg/50 ml over 30 minutes. The nurse
should program the infusion pump to deliver how many ml/hour? (Enter numeric value
only.) - CORRECT ANSWER: 100
Calculate: 50 ml : 30 minutes :: X ml : 60 minutes 50/X :: 30/60 3000 = 15X X = 100 ml
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