Oncology Certified Nurse (OCN) Nursing Practice Test

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What does Stage 3 lymphedema indicate?

Less than 3 cm difference with pitting
3-5 cm difference with shiny skin
Greater than 5 cm difference with discolored skin
Non-pitting with no skin changes

The correct answer is: Greater than 5 cm difference with discolored skin

Stage 3 lymphedema is characterized by significant swelling and changes in the skin. The correct interpretation indicates that there is typically a greater than 5 cm difference in circumference compared to the unaffected limb. This stage also commonly presents with skin changes such as discoloration, which can include thickening or a change in texture, and the skin may appear leathery or severely swollen. Stage 3 represents a more advanced level of lymphedema where the lymphatic system is overwhelmed, leading to this pronounced swelling and significant tissue changes. This highlights the severity of the condition and indicates that more intensive management and potential intervention may be necessary to manage symptoms and prevent complications. In contrast, the other descriptions refer to either less severe stages of lymphedema, where differences in limb circumference and skin changes are not as pronounced, indicating that those conditions would not meet the criteria for Stage 3 lymphedema.