Dosage Calculations Assignment
Exam Questions & Answers (Grade
A+)
A client is receiving acetaminophen (Tylenol) 0.65 gram PO every 6
hours PRN for pain. Acetaminophen is available in 325 mg tablets.
How many milligrams should the nurse administer? -
correct answer ✅Using the known equivalent, 1 gram = 1000 mg,
the nurse should first convert the dose to the same unit of
measurement, which is 0.65 grams = 650 mg.
A client experiencing ventricular tachycardia receives a prescription
a continuous infusion of dextrose 5% in water (D5W)1000 ml with
lidocaine (Xylocaine) 2 grams at a rate of 4 mg per minute. The
nurse should program the infusion pump to deliver how many
ml/hour?
(Enter numeric value only.) -
correct answer ✅First convert solution gram/ml to mg/ml:
2gm/1000ml = 2000mg/1000ml = 2 mg/ml
Next calculate # of mg/hr for the dose:
4 mg X 60 mins = 240 mg/hour
Next calculate # ml/hr to give 240 mg/hr:
2000 mg: 1000 ml :: 240 mg : X ml
2000/240 = 1000/XX = 120 ml/hour
,Dosage Calculations Assignment
Exam Questions & Answers (Grade
A+)
A client with coronary artery disease receives a prescription for
clopidogrel (Plavix) 300 mg PO. The medication is available in 75 mg
tablets. How many tablets should the nurse administer? -
correct answer ✅300 mg/75 mg = 4 tablets
A 110-pound, adult female is admitted to the Emergency Center
after receiving burns to 40 percent of her body. Using the Parkland
formula, the client's fluid requirements for the first 24 hours after
injury is calculated using Lactated Ringer's 4 ml solution x Body
weight (in kilograms) x Percent burn. The client should receive one-
half of the 24-hour calculated fluid volume in the first 8 hours of
treatment. The nurse should set the infusion pump to deliver how
many ml/hour during the first 8 hours? -
correct answer ✅Convert 110 pounds to kg = .2 = 50kg
4 ml x 50 kg x 40 = 8,000 ml
One-half in first 8 hours = 4,000 ml
4,000 ml / 8 hours = 500 = 500 ml/hour
A client with Parkinson's disease is receiving benztropine (Cogentin)
3.5 mg PO twice daily. The medication is available in 0.5 mg tablets.
How many tablets should the nurse administer for each dose? -
correct answer ✅Using D/H: 3.5 mg / 0.5 mg = 7 tablets
, Dosage Calculations Assignment
Exam Questions & Answers (Grade
A+)
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? -
correct answer ✅Determine the total volume needed at 80
ml/hour x 4 hours = 320 ml.
Use the formula, Order/On Hand x Volume =
50/100 x 320 = 160 ml
Or use ratio & 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
full strength 320ml total volume - 160 ml of full-strength formula =
160 ml of water to create 1/2 strength or 50% concentration
A client who is complaining of nausea and vomiting postoperatively
receives a prescription for metoclopramide (Reglan) 10 mg IV. The
medication is available in vials containing 5 mg/ml. How many ml
should the nurse administer? -
correct answer ✅2ml
Exam Questions & Answers (Grade
A+)
A client is receiving acetaminophen (Tylenol) 0.65 gram PO every 6
hours PRN for pain. Acetaminophen is available in 325 mg tablets.
How many milligrams should the nurse administer? -
correct answer ✅Using the known equivalent, 1 gram = 1000 mg,
the nurse should first convert the dose to the same unit of
measurement, which is 0.65 grams = 650 mg.
A client experiencing ventricular tachycardia receives a prescription
a continuous infusion of dextrose 5% in water (D5W)1000 ml with
lidocaine (Xylocaine) 2 grams at a rate of 4 mg per minute. The
nurse should program the infusion pump to deliver how many
ml/hour?
(Enter numeric value only.) -
correct answer ✅First convert solution gram/ml to mg/ml:
2gm/1000ml = 2000mg/1000ml = 2 mg/ml
Next calculate # of mg/hr for the dose:
4 mg X 60 mins = 240 mg/hour
Next calculate # ml/hr to give 240 mg/hr:
2000 mg: 1000 ml :: 240 mg : X ml
2000/240 = 1000/XX = 120 ml/hour
,Dosage Calculations Assignment
Exam Questions & Answers (Grade
A+)
A client with coronary artery disease receives a prescription for
clopidogrel (Plavix) 300 mg PO. The medication is available in 75 mg
tablets. How many tablets should the nurse administer? -
correct answer ✅300 mg/75 mg = 4 tablets
A 110-pound, adult female is admitted to the Emergency Center
after receiving burns to 40 percent of her body. Using the Parkland
formula, the client's fluid requirements for the first 24 hours after
injury is calculated using Lactated Ringer's 4 ml solution x Body
weight (in kilograms) x Percent burn. The client should receive one-
half of the 24-hour calculated fluid volume in the first 8 hours of
treatment. The nurse should set the infusion pump to deliver how
many ml/hour during the first 8 hours? -
correct answer ✅Convert 110 pounds to kg = .2 = 50kg
4 ml x 50 kg x 40 = 8,000 ml
One-half in first 8 hours = 4,000 ml
4,000 ml / 8 hours = 500 = 500 ml/hour
A client with Parkinson's disease is receiving benztropine (Cogentin)
3.5 mg PO twice daily. The medication is available in 0.5 mg tablets.
How many tablets should the nurse administer for each dose? -
correct answer ✅Using D/H: 3.5 mg / 0.5 mg = 7 tablets
, Dosage Calculations Assignment
Exam Questions & Answers (Grade
A+)
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? -
correct answer ✅Determine the total volume needed at 80
ml/hour x 4 hours = 320 ml.
Use the formula, Order/On Hand x Volume =
50/100 x 320 = 160 ml
Or use ratio & 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
full strength 320ml total volume - 160 ml of full-strength formula =
160 ml of water to create 1/2 strength or 50% concentration
A client who is complaining of nausea and vomiting postoperatively
receives a prescription for metoclopramide (Reglan) 10 mg IV. The
medication is available in vials containing 5 mg/ml. How many ml
should the nurse administer? -
correct answer ✅2ml
