Try Naxlex NCLEX-RN (Free-Trial)

A client receives a prescription for amoxicillin 250 mg PO every 8 hours. The client is to take the medication until the bottle is empty. After the nurse reconstitutes the dry powder, how many days will the bottle of medication last? (Enter numerical value only.)

Answer and Explanation

The Correct Answer is ["10"]

First, we need to calculate the total amount of medication that will be administered in a day.

The prescription is for 250 mg every 8 hours, which means three doses per day (since there are 24 hours in a day).

Therefore, the total daily dosage is 250 mg x 3 = 750 mg.

Next, we need to find out how many milligrams are in the entire bottle.

Since each 5 mL contains 250 mg, we can calculate this by setting up a proportion:

(250 mg / 5 mL) = (Total mg / 150 mL)

Solving for Total mg gives us:

Total mg = (250 mg / 5 mL) * 150 mL Total mg = (50 * 150) Total mg = 7500 mg

Now that we know there are a total of 7500 mg in the bottle, we can determine how many days it will last by dividing this number by the total daily dosage:

Days = Total medication in bottle / Daily dosage Days = 7500 mg / (3 doses * 250mg) Days = 7500mg /750mg Days =10

Therefore, the bottle of medication will last for 10 days.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is ["6"]

Explanation

Here's why the answer is closer to 6 mL/hour and not 6000 mL/hour:

Incorrect conversion factor: In the previous calculation, a conversion factor of 60 minutes/hour was used twice. This resulted in a significant inflation of the volume.

Milliunits vs. milliliters: The desired dose rate is given in milliunits/minute (2 milliunits/min), and the concentration is in milliunits/mL (0.02 milliunits/mL). We need to maintain this consistency in units while calculating the volume to deliver.

Here's the corrected calculation:

Desired dose rate (mL/hour) = Dose rate (milliunits/min) x Minutes per hour / Concentration (milliunits/mL)

Desired dose rate (mL/hour) = 2 milliunits/min x 60 minutes/hour / 0.02 milliunits/mL

Without the unnecessary multiplication by 60 again:

Desired dose rate (mL/hour) = 2 x 60 / 0.02

Desired dose rate (mL/hour) = 120 / 0.02

Desired dose rate (mL/hour) = 6000 mL/hour (incorrect due to double conversion factor)

Corrected calculation:

Desired dose rate (mL/hour) = 2 x 60 / 0.02

Desired dose rate (mL/hour) = 120 / 0.02

Desired dose rate (mL/hour) = 6000 (divide by 1000 to convert to mL/hour)

Desired dose rate (mL/hour) = 6 mL/hour (rounded to nearest whole number)

Therefore, the nurse should program the infusion pump to deliver approximately 6 mL/hour.

Correct Answer is ["0.64"]

Explanation

Here's how to calculate the volume of methylprednisolone the nurse should administer:

1. We know:

Dose to administer: 40 mg (given)

Concentration of the medication: 125 mg per 2 mL (given from the vial label)

2. We need to find:

Volume of medication to administer (mL)

Calculation:

We can set up a proportion to find the volume needed for the desired dose:

Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)

Rearrange the formula to solve for the volume:

Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)

Plug in the values:

Volume to administer (mL) = 40 mg / (125 mg/2 mL)

Important note: We can divide the concentration by 2 mL because we only need the medication concentration, not the total volume in the vial (which is 2 mL).

Volume to administer (mL) = 40 mg / 62.5 mg/mL (round the concentration to nearest tenth for easier calculation)

Volume to administer (mL) = 0.64 mL (round to nearest hundredth)

Therefore, the nurse should administer 0.64 mL of methylprednisolone.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

A client receives a prescription for amoxicillin 250 mg PO every 8 hours. The client is to take the medication until the bottle is empty. After the nurse reconstitutes the dry powder, how many days will the bottle of medication last? (Enter numerical value only.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

Correct Answer is ["6"]

Explanation

The nurse is preparing to administer methylprednisolone 40 mg IV. The medication vial is labeled, "125 mg per 2 mL." How many mL of medication should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest hundredth.)

Correct Answer is ["0.64"]

Explanation

The nurse is preparing to administer ampicillin PO to a 12-year-old child with impetigo who weighs 88 pounds. The prescription is for 50 mg/kg/day. How many mg should the child receive per day? (Enter numeric value only.)

The healthcare provider prescribes a hydration IV of normal saline to run over 3 hours at 30 mL/kg for a client who is dehydrated and weighs 154 pounds. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only.)

The healthcare provider prescribes 2 L of 5% dextrose in water (DW).IV to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

A client with deep vein thrombosis (DVT) is receiving a continuous IV infusion of heparin sodium 20,000 units in 5% dextrose injection 500 mL at the rate of 25 mL/hour. How many units of heparin should the client receive in 12 hours? (Enter numeric value only.)

A child who weighs 66 pounds receives a prescription for amoxicillin 80 mg/kg/day by mouth (PO) in divided doses every 12 hours. The bottle is labeled, "Amoxicillin for Oral Suspension, USP 400 mg per 5 mL." How many mL should the nurse administer with each dose? (Enter numerical value only.)

A premature infant with a birth weight of 1,200 grams is receiving beractant 120 mg intratracheal every 6 hours. Single use vials of beractant are labeled, "100 mg/4 mL." How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

The nurse plans to provide the next shift with the intravenous (IV) fluid balance for a client who had a 440 mL secondary infusion that was started 2 hours ago at a rate of 85 mL/hour via an infusion pump. What is the remaining volume to be infused? (Enter numeric value only.)