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DOSAGE CALCULATIONS HESI EXAM NEWEST 2025
TEST BANK| COMPLETE 300 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) GRADED A+|| NEW!!
The nurse is administering a 250 milliliter (ml) intravenous solution to
be infused over 2 hours. How many ml/hour should the nurse program
the infusion pump? (Enter numeric value only.) - ANSWER - 125
250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125
ml/hr
The nurse is preparing to administer 0.25 mg of bumetanide (Bumex) IV.
The medication is available in a vial labeled 1 mg/4 ml. How many ml
of medication should the nurse administer? (Enter numeric value only.) -
ANSWER - 1
Using the Desired/Have x Volume formula: Desired = 0.25 mg Have = 1
mg Volume = 4 ml 0.25 mg/1 mg x 4 ml = 1 ml
A client with hypertension receives a prescription for carteolol (Cartel)
7.5 mg PO daily. The drug is available in 2.5 mg tablets. How many
tablets should the nurse administer? (Enter numeric value only.) -
ANSWER - 3
Using D/H: 7.5 mg / 2.5 mg = 3 tablets
The healthcare provider prescribes trimethoprim-sulfamethoxazole
(Bactrim-DS Oral Suspension) 120 mg BID for a child with bronchitis.
pg. 1
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The Bactrim bottle is labeled 200 mg/5ml. How many ml should the
nurse administer at each dose? (Enter numeric value only.) - ANSWER -
3
Using the formula D/H x Q, 120/200 x 5 = 3 ml
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.) - 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.
The healthcare provider prescribes acetazolamide (Diamox) 600
mg/m2/day divided into 3 doses. The nurse calculates the child's body
surface area (BSA) as 0.7 m2. How many mg should the child receive
per dose? (Enter numeric value only.) - ANSWER - 140
Using the child's BSA, 0.7 m2, calculate the mg/dose, 600 mg x 0.7 m2
= 420 mg/day/3 doses = 140 mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is
available as a 20% solution (200 mg acetylcysteine per ml) is prescribed
by nasogastric tube for a client with acetaminophen toxicity. How many
ml of diluent should be added to the medication to obtain a 1:4
concentration? (Enter numeric value only. If rounding is required, round
to the nearest whole number.) - ANSWER - 120
pg. 2
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8 grams = 8,000 mg prescribed dose. Using the formula, D/H x Q, 8,000
mg / 200 mg x 1 ml = 40 ml of the 20% solution. Dilute the 40 ml to a
1:4 concentration for administration using ratio and proportion, 1 : 4
solution :: 40 ml : X X= 160 ml total volume to administer. Subtract
total volume of 160 ml - 40 ml of 20% concentration = 120 ml diluent is
added to obtain a 1:4 concentration.
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? - 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 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. - ANSWER - 2
Using the formula, D/H 500 mg/250 mg = 2 tablets
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
pg. 3
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saline over 30 minutes. The nurse should program the infusion pump to
deliver how many ml/hour? (Enter numeric value only. - 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 client with a gastrostomy tube (GT) receives a prescription for
Osmolite® 1/2 strength enteral formula at 80 ml/hour. To prepare a 4
hour solution, the nurse should dilute the full-strength formula with how
many ml of water? (Enter numeric value only.) - ANSWER - 160
Determine the total volume needed at 80 ml/hour x 4 hours = 320 ml.
Use the formula, Desired strength/strength on Hand x Volume = 50/100
x 320 = 160 ml of Osmolite® enteral formula, which must be diluted to
half strength. Or use ratio and proportion, Desired strength (1/2 = 1 part
: 2 parts) :: Volume of full strength : Total Desire volume 1 : 2 :: X : 320
ml 2X = 320, and X = 160 ml of Osmolite® enteral formula, full
strength 320 ml total volume - 160 ml of full-strength formula = 160 ml
of water to create 1/2 strength or 50% concentration.
The nurse notes that a client is receiving an oxytocin (Pitocin) infusion
via a pump that is programmed to deliver 30 ml/hour. The available
solution is Ringer's Lactated 1,000 ml with Pitocin 20 units. How many
milliunits/minute is the client receiving? (Enter numeric value only.) -
ANSWER - 10
Convert units to milliunits, 20 x 1,000 = 20,000 units. Using D/H x Q =
30 ml/hour X/20,000 units x 1,000 ml = 30 ml/hour (60 minutes) X/20
=30/60, reduce X/2 = 1/2, and 2X = 20, so X = 10 milliunits/minute OR
pg. 4
DOSAGE CALCULATIONS HESI EXAM NEWEST 2025
TEST BANK| COMPLETE 300 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) GRADED A+|| NEW!!
The nurse is administering a 250 milliliter (ml) intravenous solution to
be infused over 2 hours. How many ml/hour should the nurse program
the infusion pump? (Enter numeric value only.) - ANSWER - 125
250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125
ml/hr
The nurse is preparing to administer 0.25 mg of bumetanide (Bumex) IV.
The medication is available in a vial labeled 1 mg/4 ml. How many ml
of medication should the nurse administer? (Enter numeric value only.) -
ANSWER - 1
Using the Desired/Have x Volume formula: Desired = 0.25 mg Have = 1
mg Volume = 4 ml 0.25 mg/1 mg x 4 ml = 1 ml
A client with hypertension receives a prescription for carteolol (Cartel)
7.5 mg PO daily. The drug is available in 2.5 mg tablets. How many
tablets should the nurse administer? (Enter numeric value only.) -
ANSWER - 3
Using D/H: 7.5 mg / 2.5 mg = 3 tablets
The healthcare provider prescribes trimethoprim-sulfamethoxazole
(Bactrim-DS Oral Suspension) 120 mg BID for a child with bronchitis.
pg. 1
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The Bactrim bottle is labeled 200 mg/5ml. How many ml should the
nurse administer at each dose? (Enter numeric value only.) - ANSWER -
3
Using the formula D/H x Q, 120/200 x 5 = 3 ml
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.) - 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.
The healthcare provider prescribes acetazolamide (Diamox) 600
mg/m2/day divided into 3 doses. The nurse calculates the child's body
surface area (BSA) as 0.7 m2. How many mg should the child receive
per dose? (Enter numeric value only.) - ANSWER - 140
Using the child's BSA, 0.7 m2, calculate the mg/dose, 600 mg x 0.7 m2
= 420 mg/day/3 doses = 140 mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is
available as a 20% solution (200 mg acetylcysteine per ml) is prescribed
by nasogastric tube for a client with acetaminophen toxicity. How many
ml of diluent should be added to the medication to obtain a 1:4
concentration? (Enter numeric value only. If rounding is required, round
to the nearest whole number.) - ANSWER - 120
pg. 2
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8 grams = 8,000 mg prescribed dose. Using the formula, D/H x Q, 8,000
mg / 200 mg x 1 ml = 40 ml of the 20% solution. Dilute the 40 ml to a
1:4 concentration for administration using ratio and proportion, 1 : 4
solution :: 40 ml : X X= 160 ml total volume to administer. Subtract
total volume of 160 ml - 40 ml of 20% concentration = 120 ml diluent is
added to obtain a 1:4 concentration.
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? - 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 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. - ANSWER - 2
Using the formula, D/H 500 mg/250 mg = 2 tablets
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
pg. 3
, 4|Page
saline over 30 minutes. The nurse should program the infusion pump to
deliver how many ml/hour? (Enter numeric value only. - 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 client with a gastrostomy tube (GT) receives a prescription for
Osmolite® 1/2 strength enteral formula at 80 ml/hour. To prepare a 4
hour solution, the nurse should dilute the full-strength formula with how
many ml of water? (Enter numeric value only.) - ANSWER - 160
Determine the total volume needed at 80 ml/hour x 4 hours = 320 ml.
Use the formula, Desired strength/strength on Hand x Volume = 50/100
x 320 = 160 ml of Osmolite® enteral formula, which must be diluted to
half strength. Or use ratio and proportion, Desired strength (1/2 = 1 part
: 2 parts) :: Volume of full strength : Total Desire volume 1 : 2 :: X : 320
ml 2X = 320, and X = 160 ml of Osmolite® enteral formula, full
strength 320 ml total volume - 160 ml of full-strength formula = 160 ml
of water to create 1/2 strength or 50% concentration.
The nurse notes that a client is receiving an oxytocin (Pitocin) infusion
via a pump that is programmed to deliver 30 ml/hour. The available
solution is Ringer's Lactated 1,000 ml with Pitocin 20 units. How many
milliunits/minute is the client receiving? (Enter numeric value only.) -
ANSWER - 10
Convert units to milliunits, 20 x 1,000 = 20,000 units. Using D/H x Q =
30 ml/hour X/20,000 units x 1,000 ml = 30 ml/hour (60 minutes) X/20
=30/60, reduce X/2 = 1/2, and 2X = 20, so X = 10 milliunits/minute OR
pg. 4
