Oregon Certified Nursing Assistant State Practice Exam

Which of the following is true regarding closed wounds?

1. A puncture wound is an example of a closed wound

2. A closed wound has skin that is not intact

3. A contusion (bruise) is an example of a closed wound

4. A surgical incision is an example of a closed wound

The correct answer is: A contusion (bruise) is an example of a closed wound

The correct response highlights that a contusion, which is a bruise resulting from trauma, is indeed classified as a closed wound. In closed wounds, the skin remains intact despite injury to the underlying tissues. A contusion occurs when capillaries are damaged and blood leaks into the surrounding tissue, leading to discoloration and swelling without breaking the skin. This matches the definition of a closed wound since the surface layer is not compromised. Understanding the nature of closed wounds is essential for proper assessment and treatment. The other answers refer to types of injuries that either do not fit the definition of a closed wound or incorrectly describe the condition of the skin. For instance, a puncture wound involves a break in the skin, thus categorizing it as an open wound. Similarly, a surgical incision is typically a clean cut made with a medical instrument, resulting in the skin being intentionally broken, which also defines it as an open wound.