Wound Care Certified Certification (WCC) Practice Exam

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A patient has circular, fluid-filled lesions greater than 1 cm in diameter. What is this condition called?

  1. Vesicle

  2. Bulla

  3. Pustule

  4. Macule

The correct answer is: Bulla

The condition described as having circular, fluid-filled lesions greater than 1 cm in diameter is known as a bulla. Bullae are larger than vesicles, which are defined as fluid-filled lesions less than 1 cm in diameter. The distinction lies in their size; while both types contain fluid, the diameter makes bullae the appropriate term for lesions exceeding that threshold. Pustules refer specifically to lesions filled with pus rather than clear fluid, and macules are flat, discolored spots on the skin that do not involve any fluid accumulation or elevation. The key factors in identifying the described condition are both the circular shape and the size of the lesions, confirming that bullae are the correct classification for this scenario.