The healthcare provider prescribes amoxicillin 500 mg PO every 8 hours for a child who weighs 88 pounds. The recommended maximum safe dose is 50 mg/kg/24 hours. The available suspension is labeled, "Amoxicillin Suspension 250 mg/5 mL. Based on this child's weight, how many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the whole number.)

Answer and Explanation

The Correct Answer is ["10"]

First, we need to convert the child’s weight from pounds to kilograms since the dosage is prescribed in mg/kg. We know that 1 kg is approximately 2.20462 pounds. So,

Weight in kg= Weight in pounds/2.20462 = 2.2046288 ≈ 39.92kg

The prescribed dosage is 500 mg every 8 hours, which means three doses per day (since there are 24 hours in a day). Therefore, the total daily dosage is 500 mg * 3 = 1500 mg.

The recommended maximum safe dose is 50 mg/kg/24 hours. Therefore, the maximum safe dosage for this child would be:

Maximum safe dosage in mg=Dosage per kg×Weight in kg=50mg/kg×39.92kg=1996mg

Since the prescribed daily dosage (1500 mg) is less than the maximum safe dosage (1996 mg), it is safe to administer the prescribed dosage.

The medication is available in a concentration of 250 mg/5 mL. Therefore, the volume to be administered per dose in mL would be:

Volume in mL= Dosage per dose in mg/ Concentration in mg/mL = 500mg/50mg/mL = 10mL

So, the nurse should administer 10 mL of Amoxicillin Suspension per dose.

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Correct Answer is ["200"]

Explanation

Here's the calculation:

The medication dose (ciprofloxacin 400 mg) needs to be delivered over the entire infusion duration (1 hour).

The total volume of the IV bag containing the medication (200 mL) is the volume that needs to be infused.

Although the ciprofloxacin itself might be concentrated in a smaller volume within the bag,

the entire bag with both the medication and diluent (dextrose 5% in water) needs to be delivered over the 1-hour timeframe.

Therefore, the infusion pump rate should be set to deliver the entire volume of the bag (200 mL) over the 1-hour duration, resulting in a rate of 200 mL/hour.

Correct Answer is ["0.7"]

Explanation

To find the volume of diphenhydramine the nurse should administer, we can divide the prescribed dose (mg) by the concentration (mg/mL) of the medication, and round to the nearest tenth:

1. Prescribed dose: 35 mg of diphenhydramine

2. Medication concentration: 50 mg/mL (milligrams of diphenhydramine per milliliter of solution)

3. Calculate the volume to administer:

Volume (mL) = Dose (mg) / Concentration (mg/mL)

Volume (mL) = 35 mg / 50 mg/mL

Volume (mL) = 0.7 mL (round to the nearest tenth)

Therefore, the nurse should administer 0.7 mL of diphenhydramine.

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Naxlex Comprehensive Predictor Exams

A client receives a prescription for IV ciprofloxacin 400 mg every 12 hours, which is to be infused over an hour. The IV bag contains ciprofloxacin 400 mg in dextrose 5% in water (DW) 200 mL. How many mL/hr should the nurse program the infusion pump to deliver? (Enter numerical value only.)

Correct Answer is ["200"]

Explanation

A client with an extrapyramidal reaction receives a prescription for diphenhydramine 35 mg IM. The medication is supplied as 50 mg/mL in a 1 mL prefilled single- use syringe. How many mL should the nurse give? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer is ["0.7"]

Explanation

An adult client receives a prescription for diphenhydramine 15 mL by mouth (PO) every 12 hours as needed (PRN) for pruritus. The bottle is labeled, "Diphenhydramine 12.5 mg/5 mL." What is the total daily dose in mg that the client receives? (Enter numerical value only.)

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.)

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 nurse is preparing a dose of ketorolac 12 mg IV using a 1 mL vial containing 30 mg/mL. How many mL should the nurse administer? (Enter numerical value only.)