Intermediate Math / Tina Jones Med Math Questions

INTERMEDIATE MATH / TINA JONES MED MATH QUESTIONS 1. Problem type: Total daily dose calculation Medication: Oxycodone @ hospital Suppose Ms. Jones reports a pain rating greater than 4. For this pain rating, the prescriber’s order allows oxycodone, 5 mg, 1 tab, by mouth, every 4 hrs. Assume that for her first day of hospitalization, she takes all available doses in 24 hours. How many mg of oxycodone will she have ingested? HINT Multiply the number of doses Ms. Jones would take in a single day by the number of tablets taken. SAMPLE SOLUTION 1. Determine how many doses Ms. Jones would take in 24 hours. 24 hours x 1 dose = 6 doses 4 hours 2. Multiply the number of doses by the number of milligrams per dose of oxycodone. 6 doses x 5 mg = 30 mg 1 dose ANSWER Number: 30 Units: mg 2. Problem type: Total daily dose calculation Medication: Oxycodone @ hospital Suppose Ms. Jones reports a pain rating greater than 4. For this pain rating, the prescriber’s order allows oxycodone, 5 mg, 1 tab, by mouth, every 4 hrs. Assume that on her second day of hospitalization, Ms. Jones only reports a pain rating greater than 4 two times. How many mg of oxycodone will she have ingested? HINT Multiply the number of doses that Ms. Jones took by the number of tablets. SAMPLE SOLUTION 1. Multiply the dosage by the number of tablets per dose. 2 doses x 1 tablet = 2 tablets 1 dose 3. Multiply the dosage of oxycodone by the number of tablets. 2 tablets x 5 mg = 10 mg 1 tablet ANSWER Number: 10 Units: mg 3. Problem type: Dosage calculation + weight­based dosage Medication: Promethazine @ hospital ­ hypothetical Children older than 2 can be administered promethazine rectally as an antihistamine, at a dosage of 0.125 mg/kg every 4 to 6 hours. Assume you were administering this to a child who weighed 27.5 lbs. How much promethazine should this child be administered at one time? Round your answer to hundredths. HINT Convert pounds to kilograms, and multiply the weight by the dosage. SAMPLE SOLUTION 1. Convert pounds (lbs) to kilograms (kg). 27.5 lbs x 1 kg = 12.5 kg 2.20 lb 2. Multiply dosage by the number of kilograms. 0.125 mg x 12.5 kg = 1.56 mg kg ANSWER Number: 1.56 Units: mg