BSN HESI 215 Dosage Calculations Exam | HESI Dosage
Calculations Exam 2025 | Complete Questions and
Correct Answers with Explanations | Graded A+ |
Verified Answers
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.
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.) ---------CORRECT 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.) ---------CORRECT
ANSWER-----------------120
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? ---------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 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 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 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.) ---------CORRECT 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.) ---------CORRECT 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 20/1,000 = 0.02
1000 : 0.02 :: 30 : X = 0.6 :: 1,000X X = 600 and 600/60 = 10 milliunits/minute.
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.
The healthcare provider prescribes oxytocin (Pitocin) 0.5 milliunits/minute for a
client in labor. One liter Ringer's Lactate with 10 units of oxytocin (Pitocin) is
infusing. The nurse should program the infusion pump at how many ml/hour?
(Enter numeric value only.) ---------CORRECT ANSWER-----------------3
Calculations Exam 2025 | Complete Questions and
Correct Answers with Explanations | Graded A+ |
Verified Answers
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.
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.) ---------CORRECT 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.) ---------CORRECT
ANSWER-----------------120
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? ---------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 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 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 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.) ---------CORRECT 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.) ---------CORRECT 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 20/1,000 = 0.02
1000 : 0.02 :: 30 : X = 0.6 :: 1,000X X = 600 and 600/60 = 10 milliunits/minute.
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.
The healthcare provider prescribes oxytocin (Pitocin) 0.5 milliunits/minute for a
client in labor. One liter Ringer's Lactate with 10 units of oxytocin (Pitocin) is
infusing. The nurse should program the infusion pump at how many ml/hour?
(Enter numeric value only.) ---------CORRECT ANSWER-----------------3
