Certified Wound Ostomy Nurse (CWON) Practice Test

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Prepare for the Certified Wound Ostomy Nurse (CWON) Test. Use flashcards and multiple choice questions, featuring hints and explanations for each question. Get ready for your certification exam with confidence!

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What defines a plaque?

Flat spot of color change greater than 0.5cm in diameter
Raised spot of color change less than 0.5cm in diameter
Generalized redness
Raised spot of color change greater than 0.5cm in diameter

The correct answer is: Raised spot of color change greater than 0.5cm in diameter

A plaque is characterized as a raised area on the skin that has a defined border and is typically greater than 0.5 cm in diameter. This definition stems from dermatological terminology, where plaques often involve conditions such as psoriasis or eczema. The elevation and size of the plaque differentiate it from other skin lesions; for example, macules and papules are defined by their size and elevation, where macules are flat and less than 0.5 cm, while papules are raised but also usually less than 0.5 cm. The specific height and size criteria for plaques signify their potential to indicate underlying dermatological conditions that may require a more specific treatment approach. Therefore, recognizing a plaque's characteristics is essential for accurate diagnosis and management in wound ostomy nursing practice.