Nursing Math & Dosage Foundations · Core Topics

Intake, Output, and Fluid Calculations

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  1. In 30 seconds
  2. Quick check
  3. Study tools

In 30 seconds

This topic is taught through its practice: 12 practice questions, each with the reasoning behind the answer, and the same idea again in plain words.

Quick check

5 questions here, of 12 in this lesson’s practice set. Answers stay hidden until you check.

Question 1 of 5foundational

Using the standard household-to-metric equivalent (1 fluid ounce = 30 mL), how many milliliters should be recorded when a patient drinks 8 fluid ounces of water?

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Question 2 of 5foundational

Which statement correctly states the metric equivalence used when recording fluid volume on an intake and output record?

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Question 3 of 5foundational

An infant's diaper weighs 45 grams more after voiding than it did when dry. Using the rule that 1 gram of urine equals 1 milliliter, what urine output is recorded?

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Question 4 of 5intermediate

Over 24 hours a patient takes in 1500 mL and puts out 1900 mL. What is the fluid balance, and what does its sign indicate?

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Question 5 of 5intermediate

A patient consumes 200 mL of ice chips. Because ice chips are counted as roughly half their measured frozen volume, how much fluid intake is recorded, and why?

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