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Ati dosage calculation rn mental health proctored assessment 3.2
Total Questions : 35
Showing 10 questions, Sign in for moreA nurse is preparing to administer aripiprazole 9 mg. IM to a client. Available is aripiprazole injection 9.75 mg/3 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not trailing zero.)
Explanation
Determine the concentration of the aripiprazole injection:
Available concentration: 9.75 mg / 1.3 mL
Calculate the volume (in mL) needed for a 9 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Ordered dose (mg) / Concentration (mg/mL) Volume (mL) = 9 mg / (9.75 mg / 1.3 mL)
Simplify the complex fraction:
Volume (mL) = 9 mg x (1.3 mL / 9.75 mg)
Calculate:
Volume (mL) = (9 x 1.3) / 9.75 = 11.7 / 9.75 = 1.2 mL
A nurse is preparing to administer olanzapine 210 mg IM to a client who has schizophrenia Available is olanzapine 300 mg/2 mL How many mL the nurse administer? (Round to the nearest tenth. Use a leading zero if it applies: Do not use a trailing zero)
Explanation
Determine the concentration of the olanzapine injection:
Available concentration: 300 mg / 2 mL
Calculate the volume (in mL) needed for a 210 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Ordered dose (mg) / Concentration (mg/mL) Volume (mL) = 210 mg / (300 mg / 2 mL)
Simplify the complex fraction:
Volume (mL) = 210 mg x (2 mL / 300 mg)
Calculate:
Volume (mL) = (210 x 2) / 300 = 420 / 300 = 1.4 mL
A nurse is preparing to administer temazepam 0.015 g PO to assist a client with sleep. Available is temazepam 15mg capsules. How many capsules 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
Convert the ordered dose from grams to milligrams:
1 gram (g) = 1000 milligrams (mg)
Ordered dose: 0.015 g = 0.015 x 1000 mg = 15 mg
Determine the strength of each temazepam capsule:
Available strength: 15 mg per capsule
Calculate the number of capsules needed:
Number of capsules = Ordered dose (mg) / Strength per capsule (mg)
Number of capsules = 15 mg / 15 mg/capsule = 1 capsule
A nurse is preparing to administer chlorpromazine 50 mg IM to a client. Available is chlorpromazine 25 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use leading zero if it applies Do not use a trailing zero.)
Explanation
Determine the concentration of the chlorpromazine injection:
Available concentration: 25 mg/mL
Calculate the volume (in mL) needed for a 50 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Ordered dose (mg) / Concentration (mg/mL) Volume (mL) = 50 mg / 25 mg/mL = 2 mL
A nurse is preparing to administer sertraline 0.05 g PO to a school-age child who has obsessive-compulsive disorder. Available is sertraline oral solution 20 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
Convert Grams to Milligrams:
The prescribed dose is 0.05 grams (g).
We need to convert this to milligrams (mg) because the available medication is in mg/mL.
There are 1000 milligrams in 1 gram (1 g = 1000 mg).
So, 0.05 g x 1000 mg/g = 50 mg
Set up the Dosage Calculation:
We need to find out how many mL of the sertraline solution contain 50 mg.
The available concentration is 20 mg/mL. This means there are 20 mg of sertraline in every 1 mL of solution.
Divide the Desired Dose by the Concentration:
Divide the desired dose (50 mg) by the concentration (20 mg/mL): 50 mg / 20 mg/mL = 2.5 mL
A nurse is preparing to administer ziprasidone 17.5 mg IM to a client. Available is ziprasidone 20 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
Identify the Desired Dose and Available Concentration:
Desired Dose: 17.5 mg of ziprasidone
Available Concentration: 20 mg/mL (This means there are 20 mg of ziprasidone in every 1 mL of solution)
Set up the Calculation:
We need to find the volume (in mL) that contains the desired dose of 17.5 mg.
We can use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 17.5 mg / 20 mg/mL
Volume (mL) = 0.875 mL
Round to the Nearest Tenth:
0.9 mL
A nurse is preparing to administer perphenazine 0.032 g PO divided in four equal doses daily to a client who has psychosis. Available is perphenazine oral solution 16 mg/5 mL. How many mL should the nurse administer per dose? ( Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculate the Individual Dose:
The total daily dose is 0.032 grams (g) of perphenazine.
This is divided into four equal doses.
Individual dose: 0.032 g / 4 = 0.008 g
Convert Grams to Milligrams:
Convert the dose to milligrams (mg).
There are 1000 milligrams in 1 gram (1 g = 1000 mg).
So, 0.008 g x 1000 mg/g = 8 mg
Determine the Volume per Dose:
The available concentration is 16 mg/5 mL. We need to find the volume (in mL) that contains 8 mg.
Set up the Proportion or Use the Formula:
Proportion Method: 16 mg / 5 mL = 8 mg / x mL 16x = 40 x = 40 / 16 x = 2.5 mL
Formula Method: Volume (mL) = (Desired Dose (mg) / Available Concentration (mg)) x Volume of Available Solution (mL) Volume (mL) = (8 mg / 16 mg) * 5 mL Volume (mL) = 0.5 x 5 mL Volume (mL) = 2.5 mL
Round to the Nearest Tenth:
2.5 mL
A nurse is preparing to administer diazepam 7.5 mg IM to a client. Available is diazepam injection 5mg/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
To calculate the volume to administer, use the formula:
Volume = Desired Dose /AvailableConcentration
Given:
- Desired Dose = 7.5 mg
- Available Concentration = 5 mg/mL
Volume=7.5mg/5mg/mL=1.5mL
Final Answer: 1.5 mL
A nurse is reviewing new prescriptions for a client. Which of the following prescriptions should the nurse clarify?
A nurse is preparing to administer valproic acid 375 mg po to a client who has acute mania. Available is valproic acid syrup 250 mg/5 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
Identify the Desired Dose and Available Concentration:
Desired Dose: 7.5 mg of diazepam
Available Concentration: 5 mg/mL (This means there are 5 mg of diazepam in every 1 mL of solution)
Set up the Calculation:
Use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 7.5 mg / 5 mg/mL
Volume (mL) = 1.5 mL
Round to the Nearest Tenth :
1.5 mL
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