Ati dosage calculation rn mental health proctored assessment 3.2

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Question 1: View

A 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

Question 2: View

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

Question 3: View

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

Question 4: View

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

Question 5: View

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

Question 6: View

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

Question 7: View

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

Question 8: View

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

Question 9: View

A nurse is reviewing new prescriptions for a client. Which of the following prescriptions should the nurse clarify?

A. Pantoprazole 40 mg PO BID B. Clonidine transdermal 0.1 mg/24 hr apply every days C. Propranolol extended release 80 mg PO daily D. Sertraline 125 mg daily

Explanation

A) Pantoprazole 40 mg PO BID:
Pantoprazole is commonly prescribed for conditions like GERD or peptic ulcers, with doses typically ranging from 40 mg to 80 mg per day. A prescription for 40 mg twice daily (BID) is within the normal dosing range, which is appropriate for conditions requiring higher acid suppression, such as erosive esophagitis. This prescription does not require clarification.

B) Clonidine transdermal 0.1 mg/24 hr apply every day:
Clonidine transdermal patches are often prescribed for hypertension or withdrawal management, and the standard dose for this formulation is 0.1 mg every 7 days (typically applied once a week). The daily frequency of this prescription is incorrect and needs clarification because clonidine patches are designed for weekly use, not daily application.

C) Propranolol extended release 80 mg PO daily:
Propranolol is a beta-blocker used for managing hypertension, arrhythmias, and anxiety, and 80 mg is a commonly prescribed dose for these conditions. The extended-release form is typically taken once daily, so this prescription is appropriate and does not need clarification.

D) Sertraline 125 mg daily:
Sertraline, an SSRI (Selective Serotonin Reuptake Inhibitor), is often prescribed for depression, anxiety, and other mood disorders. The usual starting dose for sertraline is typically 50 mg daily, and the maximum recommended dose is 200 mg. However, 125 mg is an uncommon and unstandardized dose, and may not be within the usual dosing range.

Question 10: View

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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