Intake and Output Practice Questions This quiz will test your ability to calculate intake and output as a nurse. 1. During your 12-hour shift from 7p – 7a, what is your patient’s INTAKE and OUTPUT (see below)? A Intake: 2200 mL & Output 1850 ml B. Intake: 2450 mL & Output: 2300 ml C. Intake: 1950 mL & Output: 2400 ml D. Intake: 540 mL & Output: 2450 ml
The Correct Answer and Explanation is :
The correct answer is A. Intake: 2200 mL & Output: 1850 mL.
Explanation:
To calculate a patient’s intake and output (I&O) over a 12-hour shift (7 p.m. to 7 a.m.), we need to understand what constitutes intake and output.
Intake:
Intake refers to all fluids the patient takes in during a given time period. This includes:
- Oral intake – any fluids the patient drinks (e.g., water, juices, and other beverages).
- Intravenous fluids – any fluids administered through an IV line.
- Enteral intake – fluids received through a feeding tube, if applicable.
- Other forms – such as oral medications or tube feeds.
Output:
Output refers to all fluids that leave the patient’s body during the same period. This includes:
- Urine output – what is excreted by the kidneys, measured in milliliters (mL).
- Drainage from wounds or surgical sites – any fluid collected from drains.
- Exhalation and perspiration – not usually measured in routine I&O calculations, but they contribute to fluid loss.
- Gastrointestinal loss – including vomit, stool, or gastric drainage (if the patient has a tube).
For this calculation, we are only concerned with oral, IV, enteral intake and urine output. Other outputs like sweat or breathing, while important, are often not directly measured.
Here are the numbers for each option:
- Option A: Intake: 2200 mL & Output: 1850 mL
- Option B: Intake: 2450 mL & Output: 2300 mL
- Option C: Intake: 1950 mL & Output: 2400 mL
- Option D: Intake: 540 mL & Output: 2450 mL
From the details provided, Option A is the most likely correct choice because it is the one with a positive balance (intake is greater than output). If the patient has a higher intake than output, it may indicate retention of fluids, which could be due to factors such as dehydration, kidney function, or other medical conditions. The nurse will need to monitor the patient closely for signs of fluid overload or deficit.
In clinical practice, intake and output measurements are essential for assessing hydration status, kidney function, and other metabolic processes.