MACE Medication Concepts and Calculations 3

Question 1

A resident requires 1,000 mL of IV fluid to infuse over 8 hours. What is the infusion rate in mL/hr?

Accepted Answer

125 mL/hr

Answer

1,000 mL ÷ 8 hours = 125 mL/hr.

Question 2

Which class of medications works by blocking H2 receptors to reduce stomach acid production?

Accepted Answer

H2 receptor antagonists

Answer

H2 receptor antagonists (e.g., famotidine, ranitidine) block histamine H2 receptors on stomach cells to reduce acid secretion.

Question 3

When a drug order reads 'ASA 325 mg PO QID PRN pain,' what does PRN mean?

Accepted Answer

As needed

Answer

PRN is a Latin abbreviation for 'pro re nata,' meaning as needed or when necessary.

Question 4

A medication has a narrow therapeutic index. What does this mean for the medication aide?

Accepted Answer

Small dose changes can cause toxicity or treatment failure

Answer

A narrow therapeutic index means there is little difference between an effective dose and a toxic dose, requiring careful monitoring.

Question 5

An order reads: 'Give amoxicillin 500 mg PO q8h × 10 days.' How many total doses will be given over the treatment course?

Accepted Answer

30 doses

Answer

3 doses/day (q8h = every 8 hours) × 10 days = 30 total doses.

MACE - Exam Prep Practice Test