Medical Surgical Fluid & Electrolyte Basics #2

Question

Examples of insensible fluid loss: Select all that apply.

Answers

  1. Blood
    • Rationale:

      This answer is not correct because blood is an example of sensible blood loss since it can be measured. Blood can also be seen and felt.

  2. Perspiration
    • Rationale:

      This answer is correct because perspiration cannot be measured. Perspiration is water loss through diffusion of skin. Perspiration is not to be confused with sweating. Unlike sweating, the fluid lost is pure water, no solutes are lost.

  3. Nasogastric drainage
    • Rationale:

      This answer is not correct because nasogastric drainage is a sensible loss.A nasogastric tube can be used to drain the stomach if it is not working properly. The stomach contents can be seen and measured.

  4. Third spacing
    • Rationale:

      This answer is correct because third spacing is when fluid shifts from inside the intravascular space to interstitial space inside the body. This is the area in between the cells. This results in edema and swelling and is considered insensible fluid loss since the fluid cannot be seen directly or measured.

  5. Wound drainage
    • Rationale:

      This answer is not correct because drainage from wounds can be seen and measured. This is done by wound drainage collection systems such as the Jackson-Pratt drain.

Overview

Insensible fluid loss is loss of fluid that cannot be measured. Examples of insensible fluid loss include perspiration, respirations, fever, third spacing, trach/vent, and peritoneum.

Explanation

Learning Outcomes

Insensible fluid loss is loss of fluid that cannot be measured. Examples of insensible fluid loss include perspiration, respirations, fever, third spacing, trach/vent, and peritoneum. Sensible fluid loss is fluid that can be seen, felt, or measured. Examples of sensible fluid loss would be bleeding, gastric drainage, vomiting, wound drainage, urination, and defecation. Our bodies are 60% water. Water is considered a necessary source to achieve homeostasis. Sensible and insensible water loss is significant in maintaining water balance in our bodies.

Test Taking Tip

Read each question carefully. Before choosing your answer, close your eyes and recall the correct answer in your mind, then open your eyes and pick the correct answer option(s).

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