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HESI RN Dosage Pre-assessment 2
Total Questions : 55
Showing 10 questions, Sign in for moreA client is receiving alprazolam (Xanax) 0.75 mg PO bid for anxiety. Alprazolam is available in 0.5 mg scored tablets. How many tablets should the nurse administer? (Enter numeric value only.)
Explanation
Calculating the Alprazolam Dose
Problem: Administer 0.75 mg of alprazolam PO. The available concentration is 0.5 mg/tablet.
Steps:
Set up a proportion:
We want to find the number of tablets needed.
We know the desired dose (0.75 mg) and the concentration of the medication (0.5 mg/tablet).
Proportion:
x tablets / 0.75 mg = 1 tablet / 0.5 mg
Cross-multiply:
0.5x = 0.75
Solve for x:
x = 0.75 / 0.5
x = 1.5
Answer: The nurse should administer 1.5 tablets of alprazolam per dose.
The health-care provider prescribes trimethoprim-sulfamethoxazole (Bactrim-DS Oral Suspension) 120 mg BID for a child with bronchitis. The Bactrim bottle is labeled "200 mg/5ml." How many ml should the nurse administer at each dose? (Enter the numeric value, whole number, only.)
Explanation
Calculating the Trimethoprim-Sulfamethoxazole Dose
Problem: Administer 120 mg of Bactrim-DS Oral Suspension. The available concentration is 200 mg/5 mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (120 mg) and the concentration of the medication (200 mg/5 mL).
Proportion:
x mL / 120 mg = 5 mL / 200 mg
Cross-multiply:
200x = 600
Solve for x:
x = 600 / 200
x = 3
Answer: The nurse should administer 3 mL of Bactrim-DS Oral Suspension per dose.
An 88 pound child with iron deficiency anemia has been prescribed ferrous fumarate 3 mg/kg/day PO three times daily. The medication is available in oral suspension of 100 mg/5 ml. The nurse is instructing the mother in measuring the correct dose. How many ml should the child receive for each dose?
Explanation
Calculating the Ferrous Fumarate Dose
Problem: Administer ferrous fumarate 3 mg/kg/day PO three times daily to an 88-pound child. The available concentration is 100 mg/5 mL.
Steps:
Convert pounds to kilograms:
88 pounds x (1 kg / 2.20462 pounds) ≈ 39.9 kg
Calculate the daily dose:
3 mg/kg/day x 39.9 kg = 119.7 mg/day
Calculate the dose per administration (TID):
119.7 mg/day / 3 doses = 39.9 mg/dose
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (39.9 mg) and the concentration of the medication (100 mg/5 mL).
Proportion:
x mL / 39.9 mg = 5 mL / 100 mg
Cross-multiply:
100x = 199.5
Solve for x:
x = 199.5 / 100
x ≈ 2
Answer: The child should receive approximately 2 mL of ferrous fumarate oral suspension for each dose.
The nurse needs to calculate a client's oral temperature of 99.2??? Fahrenheit to Celsius. What temperature in Celsius should the nurse document? (Enter numeric value only. Round to the nearest tenth.)
Explanation
To convert Fahrenheit to Celsius, you can use the following formula:
Celsius = (Fahrenheit - 32) x 5/9
In this case, the Fahrenheit temperature is 99.2. Plugging it into the formula:
Celsius = (99.2 - 32) x 5/9
Celsius = 67.2 x 5/9
Celsius = 37.33
Rounding to the nearest tenth, the Celsius temperature is 37.3.
Docusate sodium (Colace) 0.3 grams is prescribed for a client who has frequent constipation. Each capsule contains 100 mg. How many capsules should the nurse administer?
Explanation
First, let's convert grams to milligrams:
0.3 grams x 1000 mg/gram = 300 mg
Then, set up a proportion:
x capsules / 300 mg = 1 capsule / 100 mg
Cross-multiply:
100x = 300
Solve for x:
x = 300 / 100
x = 3
Therefore, the nurse should administer 3 capsules of docusate sodium (Colace).
By The nurse is preparing a tube feeding of Ensure 280 ml (50% solution). Full strength Ensure is available in a 240 ml can. The nurse should use how many ml of Ensure to prepare the feeding? (Enter numeric value for only. If rounding is required, round to nearest whole number.)
Explanation
Understanding the Problem:
We need to prepare a 280 ml tube feeding of Ensure that's 50% strength.
Full-strength Ensure comes in 240 ml cans.
Solution:
Determine the volume of Ensure needed:
Since we want a 50% solution, we need to dilute the full-strength Ensure by half.
So, we need 280 ml / 2 = 140 ml of full-strength Ensure.
Therefore, the nurse should use 140 ml of Ensure to prepare the feeding.
A client who has a sinus infection is receiving a prescription for amoxicillin/clavulanate potassium (Augmentin) 500 mg PO every 8 hours. The available form is 250 mg amoxicillin/125mg clavulanate tablets. How many tablets should the nurse administer for each dose? (Enter numeric value only.)
Explanation
Understanding the Problem:
We need to administer 500 mg of amoxicillin/clavulanate potassium.
The available tablets contain 250 mg amoxicillin and 125 mg clavulanate potassium.
Solution:
Determine the total amount of active ingredients in the available tablets:
250 mg (amoxicillin) + 125 mg (clavulanate potassium) = 375 mg/tablet
Calculate the number of tablets needed:
500 mg (desired dose) / 375 mg/tablet = 1.33 tablets
Since we cannot administer a fraction of a tablet, we round up to the nearest whole number.
Therefore, the nurse should administer 2 tablets for each dose.
The health-care provider prescribes furosemide 15 mg IM STAT. The available ampoule is labeled, furosemide 10 mg/ml. How many milliliters should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
Explanation
Understanding the Problem:
We need to administer 15 mg of furosemide.
The available ampoule contains 10 mg/mL of furosemide.
Solution:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (15 mg) and the concentration of the medication (10 mg/mL).
Proportion:
x mL / 15 mg = 1 mL / 10 mg
Cross-multiply:
10x = 15
Solve for x:
x = 15 / 10
x = 1.5
Therefore, the nurse should administer 1.5 mL of furosemide.
A client with acute decompensated heart failure (HF) is to receive an IV infusion of inamrinone (Inocor) 8 mcg/kg/minute. The available vial of inamrinone is 0.1 grams/100 to be infused in 250ml bag of 0.9% normal saline (NS). The client's current weight is 183 lbs. The nurse should program the infusion pump to deliver how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
Explanation
Calculating the Inamrinone Infusion Rate
Step 1: Convert weight to kilograms:
183 lbs x (1 kg / 2.20462 lbs) ≈ 83.0 kg
Step 2: Calculate the desired dose rate in mcg/minute:
8 mcg/kg/minute x 83.0 kg ≈ 664 mcg/minute
Step 3: Calculate the concentration of inamrinone in the IV solution:
0.1 grams/100 mL = 100 mg/100 mL = 1 mg/mL
Step 4: Calculate the infusion rate in mL/hour:
First, convert mcg to mg:
664 mcg x (1 mg / 1000 mcg) = 0.664 mg/minute
Then, set up a proportion:
x mL/hour / 0.664 mg/minute = 60 minutes/hour / 1 mg/mL
Cross-multiply and solve for x:
x mL/hour = 0.664 mg/minute x 60 minutes/hour / 1 mg/mL
x mL/hour ≈ 40 mL/hour
Therefore, the nurse should program the infusion pump to deliver approximately 40 mL/hour.
The health-care provider prescribes nitroglycerin 0.6 mg sub-lingual (SL) PRN for chest pain for a client with chronic stable angina. The medication is available in 0.4 mg tablets. How many tablets should the nurse administer if the client experiences chest pain? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Explanation
To determine the number of tablets needed, we can set up a proportion:
x tablets / 0.6 mg = 1 tablet / 0.4 mg
Cross-multiplying:
0.4x = 0.6
Solving for x:
x = 0.6 / 0.4
x = 1.5
Since we cannot administer a fraction of a tablet, we round up to the nearest whole number.
Therefore, the nurse should administer 2 tablets of nitroglycerin 0.4 mg sublingually if the client experiences chest pain
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