RN Maternal OB Dosage and Calculations
Question 11 of 104:
A nurse is preparing to administer hydrochlorothiazide 25 mg PO every 8 hr. The amount available is
hydrochlorothiazide 50 mg/tab. How many tablets should the nurse administer per dose? (Round the
answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Tablets to be administered = Desired dose / Amount per tablet
Given:
Desired dose = 25 mg
Amount per tablet = 50 mg
Calculation:
Tablets to be administered = 25 mg / 50 mg/tablet = 0.5 tablets
Answer:
The nurse should administer 0.5 tablets per dose.
,Question 41 of 104:
A nurse is preparing to administer amoxicillin 250 mg PO. Available is amoxicillin oral suspension 125
mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number.
Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Volume to be administered (mL) = Desired dose (mg) / Concentration (mg/mL)
Given:
Desired dose = 250 mg
Concentration = 125 mg/5 mL
Calculation:
Volume to be administered = 250 mg ÷ 125 mg/5 mL
Volume to be administered = 250 ÷ 25
Volume to be administered = 10 mL
Answer:
The nurse should administer 10 mL.
,Question 36 of 104:
A nurse is preparing to administer fluoxetine 30 mg PO for a client who has depression and cannot
swallow capsules. Available is fluoxetine 20 mg/5 mL oral solution. How many mL should the nurse plan
to administer? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Volume to be administered (mL) = Desired dose (mg) / Concentration (mg/mL)
Given:
Desired dose = 30 mg
Concentration = 20 mg/5 mL
Calculation:
Volume to be administered = 30 mg ÷ (20 mg/5 mL)
Volume to be administered = 30 mg ÷ 4 mg/mL
Volume to be administered = 7.5 mL
Answer:
The nurse should administer 7.5 mL.
, Question 86 of 104:
A nurse is preparing to administer nizatidine 150 mg PO. The amount available is nizatidine 75
mg/tablet. How many tablets should the nurse administer? (Round the answer to the nearest whole
number. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Tablets to be administered = Desired dose (mg) / Amount per tablet (mg)
Given:
Desired dose = 150 mg
Amount per tablet = 75 mg
Calculation:
Tablets to be administered = 150 mg ÷ 75 mg/tablet
Tablets to be administered = 2 tablets
Answer:
The nurse should administer 2 tablets.
Question 11 of 104:
A nurse is preparing to administer hydrochlorothiazide 25 mg PO every 8 hr. The amount available is
hydrochlorothiazide 50 mg/tab. How many tablets should the nurse administer per dose? (Round the
answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Tablets to be administered = Desired dose / Amount per tablet
Given:
Desired dose = 25 mg
Amount per tablet = 50 mg
Calculation:
Tablets to be administered = 25 mg / 50 mg/tablet = 0.5 tablets
Answer:
The nurse should administer 0.5 tablets per dose.
,Question 41 of 104:
A nurse is preparing to administer amoxicillin 250 mg PO. Available is amoxicillin oral suspension 125
mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number.
Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Volume to be administered (mL) = Desired dose (mg) / Concentration (mg/mL)
Given:
Desired dose = 250 mg
Concentration = 125 mg/5 mL
Calculation:
Volume to be administered = 250 mg ÷ 125 mg/5 mL
Volume to be administered = 250 ÷ 25
Volume to be administered = 10 mL
Answer:
The nurse should administer 10 mL.
,Question 36 of 104:
A nurse is preparing to administer fluoxetine 30 mg PO for a client who has depression and cannot
swallow capsules. Available is fluoxetine 20 mg/5 mL oral solution. How many mL should the nurse plan
to administer? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Volume to be administered (mL) = Desired dose (mg) / Concentration (mg/mL)
Given:
Desired dose = 30 mg
Concentration = 20 mg/5 mL
Calculation:
Volume to be administered = 30 mg ÷ (20 mg/5 mL)
Volume to be administered = 30 mg ÷ 4 mg/mL
Volume to be administered = 7.5 mL
Answer:
The nurse should administer 7.5 mL.
, Question 86 of 104:
A nurse is preparing to administer nizatidine 150 mg PO. The amount available is nizatidine 75
mg/tablet. How many tablets should the nurse administer? (Round the answer to the nearest whole
number. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Calculation:
Formula:
Tablets to be administered = Desired dose (mg) / Amount per tablet (mg)
Given:
Desired dose = 150 mg
Amount per tablet = 75 mg
Calculation:
Tablets to be administered = 150 mg ÷ 75 mg/tablet
Tablets to be administered = 2 tablets
Answer:
The nurse should administer 2 tablets.
