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Lpn dosage calculation pn mental health proctored assessment 3.1
Total Questions : 35
Showing 10 questions, Sign in for moreA nurse is preparing to administer phenelzine 90 mg PO divided in three equal doses daily to a client who has depression. Available is phenelzine 15 mg tablets. How many tablets should the nurse administer per day? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Step-by-Step Calculation
Understanding the Problem
Total daily dose of phenelzine: 90 mg
Divided into 3 equal doses
Strength of each tablet: 15 mg
We need to find the total number of tablets per day.
Calculations
Calculate the dose per administration:
Dose per administration = Total daily dose / Number of doses
Dose per administration = 90 mg / 3 = 30 mg
Calculate the number of tablets per dose:
Tablets per dose = Dose per administration / Tablet strength
Tablets per dose = 30 mg / 15 mg/tablet = 2 tablets
The nurse should administer 2 tablets per day.
Since the client will receive 2 tablets per dose and will take 3 doses per day, the total number of tablets for the day is:
2 tablets/dose × 3 doses/day = 6 tablets/day
A nurse is reviewing a client's new prescription for temazepam 30 mg PO. Which of the following should the nurse clarify with the provider?
A nurse is preparing to administer chlorpromazine hydrochloride 40 mg IM to a client who has anorexia nervosa. Available is chlorpromazine hydrochloride injection 25 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Step-by-Step Calculation
Understanding the Problem
Desired dose: 40 mg of chlorpromazine hydrochloride
Available concentration: 25 mg/mL
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 40 mg / 25 mg/mL = 1.6 mL
The nurse should administer 1.6 mL of chlorpromazine hydrochloride.
A nurse is preparing to administer 0.3 g of lithium PO to a client. How many mg of lithium should the nurse administer to the client? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Answer
The nurse should administer 300 mg of lithium.
Step-by-Step Calculation
Understanding the Problem
Desired lithium dose: 0.3 grams
Need to convert grams to milligrams
Calculations
1 gram = 1000 milligrams
0.3 grams = 0.3 X 1000 = 300 milligrams
The nurse should administer 300 mg of lithium.
A nurse is preparing to administer lorazepam 0.003 g PO to a client who has anxiety. How many mg 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.)
Explanation
The nurse should administer 3 mg of lorazepam
Step-by-Step Calculation
Understanding the Problem
Desired lorazepam dose: 0.003 g
Need to convert grams to milligrams
Calculations
1 gram = 1000 milligrams
0.003 grams = 0.003 X 1000 = 3 milligrams
The nurse should administer 3 mg of lorazepam.
A nurse is preparing to administer hydroxyzine hydrochloride 75 mg IM to a client who has anxiety. Available is hydroxyzine hydrochloride injection 50 mg/mL. How many ml should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Step-by-Step Calculation
Understanding the Problem
Desired dose: 75 mg hydroxyzine hydrochloride
Available concentration: 50 mg/mL
We need to find the volume to administer.
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 75 mg / 50 mg/mL = 1.5 mL
The nurse should administer 1.5 mL of hydroxyzine hydrochloride.
A nurse is preparing to administer sertraline 75 mg PO to a client who has post-traumatic stress disorder. Available is sertraline 50 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
The nurse should administer 1.5 tablets of sertraline.
Understanding the Problem
Desired sertraline dose: 75 mg
Available sertraline tablets: 50 mg each
We need to find the number of tablets to administer.
Calculations
Calculate the number of tablets:
Number of tablets = Desired dose / Tablet strength
Number of tablets = 75 mg / 50 mg/tablet = 1.5 tablets
The nurse should administer 1.5 tablets of sertraline.
A nurse is preparing to administer fluphenazine hydrochloride 3 mg IM to a client who has schizophrenia. Available is fluphenazine hydrochloride Injection 2.5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Answer
The nurse should administer 1.2 mL of fluphenazine hydrochloride.
Step-by-Step Calculation
Understanding the Problem
Desired dose: 3 mg fluphenazine hydrochloride
Available concentration: 2.5 mg/mL
We need to find the volume to administer.
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 3 mg / 2.5 mg/mL = 1.2 mL
The nurse should administer 1.2 mL of fluphenazine hydrochloride.
A nurse is preparing to administer haloperidol 75 mg IM to a client who has schizophrenia. Available is haloperidol 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Answer
The nurse should administer 1.5 mL of haloperidol.
Step-by-Step Calculation
Understanding the Problem
Desired dose: 75 mg haloperidol
Available concentration: 50 mg/mL
We need to find the volume to administer.
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 75 mg / 50 mg/mL = 1.5 mL
The nurse should administer 1.5 mL of haloperidol.
A nurse is preparing to administer risperidone 25 mg IM to an older adult client who has schizophrenia. Available is risperidone injection 25 mg/2 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.)
Explanation
The nurse should administer 2 mL of risperidone.
Step-by-Step Calculation
Understanding the Problem
Desired risperidone dose: 25 mg
Available concentration: 25 mg/2 mL
We need to find the volume to administer.
Calculations
Since the desired dose (25 mg) is equal to the concentration per mL (25 mg/2 mL), we can directly administer the entire 2 mL vial.
The nurse should administer 2 mL of risperidone.
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