Robitussin DM contains 100 mg of guaifenesin per 1 teaspoon. How many milligrams of guaifenesin are in 10 mL?

200 mg

100 mg

75 mg

50 mg

Answer and Explanation

The Correct Answer is A

Robitussin DM contains 100 mg of guaifenesin per 1 teaspoon. One teaspoon is equivalent to 5 milliliters, so 100 mg is present in 5 mL. Therefore, 10 mL of Robitussin DM contains 2 times the amount of guaifenesin in 1 teaspoon or 200 mg.

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Correct Answer is D

Explanation

The toddler is ordered to receive 25 mg/kg of Principen IV over 30 minutes. The toddler weighs 22 lb, which is equivalent to 10 kg. To calculate the total amount of Principen the toddler should receive, multiply the weight by the dosage:

10 kg x 25 mg/kg = 250 mg

The Principen dose arrives from the pharmacy prepared in 50 mL of IV solution, which means there is 250 mg of Principen in 50 mL of solution. To calculate how many milliliters per hour the nurse should administer, we can use the following formula:

50 mL / 0.5 hour = X mL per hour X = 100 mL per hour

Therefore, the nurse should administer 100 mL of Principen per hour to the toddler.

A. 0.1 tablets B. 0.5 tablets C. 1 tablet D. 3 tablets

Correct Answer is C

Explanation

The Tylenol 3 medication contains codeine 30 mg and acetaminophen (APAP) 300 mg per tablet.

The physician has ordered Tylenol 3 30 mg every 4-6 hours as needed for pain. Therefore, the nurse should administer 1 tablet (containing 30 mg of codeine and 300 mg of APAP) every 4-6 hours as needed for pain..

It is important to note that the maximum daily dose of acetaminophen is 4,000 mg. Therefore, the nurse should monitor the total daily dose of acetaminophen the patient receives from all sources to ensure it does not exceed 4,000 mg.

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Robitussin DM contains 100 mg of guaifenesin per 1 teaspoon. How many milligrams of guaifenesin are in 10 mL?

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Naxlex Comprehensive Predictor Exams

An order is received for Principen (ampicillin) 25 mg/kg IV for a toddler who weighs 22 lb, the dose is to be infused over 30 minutes. The ampicillin dose arrives from the pharmacy prepared in 50 mL of IV solution. How many milliliters per hour should be administered?

Correct Answer is D

Explanation

A physician orders Tylenol 3 (codeine/APAP) 30 mg by mouth every 4-6 hours as needed for pain. The nurse has Tylenol 3 available as 30/300 mg tablets. How many tablets should the nurse administer to the patient?

Correct Answer is C

Explanation

A patient with deep vein thrombosis has heparin ordered. Heparin 25,000 units in 250 mL D5W infuses at a rate of 12 mL/hr from 9:00 a.m. to 11:00 a.m. and 10 mL/hr from 11:00 a.m. to 2:00 p.m. What is the total amount of heparin, in units, that the patient received from 9:00 a.m. to 2:00 p.m.?

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