RN Exam Practice
Pharmacological and Parenteral TherapiesQuestion 1613 of 2368

A gravity IV of 1000 mL is ordered over 8 hours using tubing labeled 15 drops per milliliter. What is the flow rate?

  1. 31 drops per minute
  2. 16 drops per minute
  3. 125 drops per minute
  4. 1875 drops per minute
Show answer

Correct answer: 31 drops per minute

Multiply 15 drops/mL by 1000 mL, divide by 480 minutes to get 31.25, and round to 31 drops per minute.

Source: Nursing Skills, 2nd edition (Open RN, Chippewa Valley Technical College, 2023), Math Calculations: Practice Problem: IV Infusion (Example 1). Licensed under CC BY 4.0.

Practice the topic "Pharmacological and Parenteral Therapies"

Questions last reviewed: 18 October 2026