Dosage Calculation RN Maternal Newborn Proctored
Assessment 3.1 Exam Questions and Correct Answers
Question: A postpartum mother is prescribed ibuprofen 400 mg every 6 hours as needed
for pain relief. The available concentration is 100 mg/5 mL. How many milliliters should
the nurse administer for each dose?
a) 2 mL
b) 10 mL
c) 20 mL
d) 25 mL
Answer: a) 2 mL
Explanation: The prescribed dose is 400 mg. Since the concentration is 100 mg/5 mL, the
nurse should administer 2 mL for each dose.
Question: A newborn with a birth weight of 3.5 kg is prescribed ampicillin at a dose of 50
mg/kg/dose every 12 hours. The available concentration is 100 mg/2 mL. How many
milliliters should the nurse administer for each dose?
a) 0.5 mL
b) 1 mL
c) 1.5 mL
d) 2 mL
Answer: c) 1.5 mL
Explanation: The newborn's weight is 3.5 kg, so the dose would be 3.5 kg × 50 mg/kg = 175
mg per dose. Since the concentration is 100 mg/2 mL, the nurse should administer 1.5 mL
for each dose.
Question: A laboring mother requires an oxytocin infusion at a rate of 10 milliunits/minute.
The available solution is 20 units in 1000 mL. At what rate in mL/hour should the nurse set
the IV pump?
a) 0.5 mL/hour
b) 2.5 mL/hour
c) 5 mL/hour
d) 10 mL/hour
Answer: c) 5 mL/hour
Explanation: The prescribed rate is 10 milliunits/minute. Since there are 20 units in 1000
mL, the nurse should administer 0.5 mL/minute. Therefore, the rate would be 0.5
mL/minute × 60 minutes = 30 mL/hour.
Question: A neonate is prescribed vitamin K at a dose of 1 mg intramuscularly. The
available concentration is 2 mg/mL. How many milliliters should the nurse administer for
the dose?
a) 0.5 mL
pg. 1
, b) 1 mL
c) 1.5 mL
d) 2 mL
Answer: b) 1 mL
Explanation: The prescribed dose is 1 mg. Since the concentration is 2 mg/mL, the nurse
should administer 0.5 mL for the dose.
Question: A newborn is prescribed phototherapy using bilirubin lights. The order is for a
light intensity of 20 microwatts/cm^2/nm. The available phototherapy unit emits 30
microwatts/cm^2/nm. What percentage of light intensity adjustment should the nurse
make?
a) 33.33%
b) 50%
c) 66.67%
d) 75%
Answer: a) 33.33%
Explanation: The adjustment percentage can be calculated using the formula: ((Ordered
intensity - Available intensity) / Available intensity) * 100%. In this case, it would be ((20 -
30) / 30) * 100% = -10/30 * 100% = -0.3333 * 100% = -33.33%. Since the adjustment is
made downwards, the percentage is positive, and thus, the adjustment percentage is
33.33%.
Question: A postpartum mother is prescribed ferrous sulfate 325 mg orally once daily. The
available tablets are 65 mg each. How many tablets should the nurse administer for each
dose?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 5 tablets
Answer: b) 5 tablets
Explanation: The prescribed dose is 325 mg. Since the tablets are 65 mg each, the nurse
should administer 5 tablets for each dose.
Question: A neonate is prescribed gentamicin at a dose of 5 mg/kg/day in two divided
doses every 12 hours. The neonate's weight is 3 kg. The available concentration is 20
mg/mL. How many milliliters should the nurse administer for each dose?
a) 0.25 mL
b) 0.5 mL
c) 0.75 mL
d) 1 mL
Answer: b) 0.5 mL
Explanation: The prescribed dose is 5 mg/kg/day. Since the neonate's weight is 3 kg, the
total daily dose would be 3 kg × 5 mg/kg = 15 mg/day. Since the dose is divided into two
pg. 2
Assessment 3.1 Exam Questions and Correct Answers
Question: A postpartum mother is prescribed ibuprofen 400 mg every 6 hours as needed
for pain relief. The available concentration is 100 mg/5 mL. How many milliliters should
the nurse administer for each dose?
a) 2 mL
b) 10 mL
c) 20 mL
d) 25 mL
Answer: a) 2 mL
Explanation: The prescribed dose is 400 mg. Since the concentration is 100 mg/5 mL, the
nurse should administer 2 mL for each dose.
Question: A newborn with a birth weight of 3.5 kg is prescribed ampicillin at a dose of 50
mg/kg/dose every 12 hours. The available concentration is 100 mg/2 mL. How many
milliliters should the nurse administer for each dose?
a) 0.5 mL
b) 1 mL
c) 1.5 mL
d) 2 mL
Answer: c) 1.5 mL
Explanation: The newborn's weight is 3.5 kg, so the dose would be 3.5 kg × 50 mg/kg = 175
mg per dose. Since the concentration is 100 mg/2 mL, the nurse should administer 1.5 mL
for each dose.
Question: A laboring mother requires an oxytocin infusion at a rate of 10 milliunits/minute.
The available solution is 20 units in 1000 mL. At what rate in mL/hour should the nurse set
the IV pump?
a) 0.5 mL/hour
b) 2.5 mL/hour
c) 5 mL/hour
d) 10 mL/hour
Answer: c) 5 mL/hour
Explanation: The prescribed rate is 10 milliunits/minute. Since there are 20 units in 1000
mL, the nurse should administer 0.5 mL/minute. Therefore, the rate would be 0.5
mL/minute × 60 minutes = 30 mL/hour.
Question: A neonate is prescribed vitamin K at a dose of 1 mg intramuscularly. The
available concentration is 2 mg/mL. How many milliliters should the nurse administer for
the dose?
a) 0.5 mL
pg. 1
, b) 1 mL
c) 1.5 mL
d) 2 mL
Answer: b) 1 mL
Explanation: The prescribed dose is 1 mg. Since the concentration is 2 mg/mL, the nurse
should administer 0.5 mL for the dose.
Question: A newborn is prescribed phototherapy using bilirubin lights. The order is for a
light intensity of 20 microwatts/cm^2/nm. The available phototherapy unit emits 30
microwatts/cm^2/nm. What percentage of light intensity adjustment should the nurse
make?
a) 33.33%
b) 50%
c) 66.67%
d) 75%
Answer: a) 33.33%
Explanation: The adjustment percentage can be calculated using the formula: ((Ordered
intensity - Available intensity) / Available intensity) * 100%. In this case, it would be ((20 -
30) / 30) * 100% = -10/30 * 100% = -0.3333 * 100% = -33.33%. Since the adjustment is
made downwards, the percentage is positive, and thus, the adjustment percentage is
33.33%.
Question: A postpartum mother is prescribed ferrous sulfate 325 mg orally once daily. The
available tablets are 65 mg each. How many tablets should the nurse administer for each
dose?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 5 tablets
Answer: b) 5 tablets
Explanation: The prescribed dose is 325 mg. Since the tablets are 65 mg each, the nurse
should administer 5 tablets for each dose.
Question: A neonate is prescribed gentamicin at a dose of 5 mg/kg/day in two divided
doses every 12 hours. The neonate's weight is 3 kg. The available concentration is 20
mg/mL. How many milliliters should the nurse administer for each dose?
a) 0.25 mL
b) 0.5 mL
c) 0.75 mL
d) 1 mL
Answer: b) 0.5 mL
Explanation: The prescribed dose is 5 mg/kg/day. Since the neonate's weight is 3 kg, the
total daily dose would be 3 kg × 5 mg/kg = 15 mg/day. Since the dose is divided into two
pg. 2
