Which of the following interventions is essential for lymphedema prevention after a mastectomy?

Wearing a compression sleeve is considered an essential intervention for the prevention of lymphedema after a mastectomy. Following the removal of lymph nodes during the surgical procedure, there is an increased risk of lymph fluid accumulation in the arm. The use of a compression sleeve helps to promote lymphatic drainage by providing external support and pressure to the arm, thereby reducing the likelihood of swelling.

The compression sleeve works by applying graduated pressure to the limb, which enhances blood flow and encourages the movement of lymph fluid back toward the center of the body. This can significantly reduce the risk of lymphedema developing or worsening post-surgery.

Other options, such as allowing the arm to remain dependent, not exercising, and avoiding certain medical procedures (like blood pressure readings or injections in the affected arm), do not effectively address the underlying risk factors associated with lymphedema prevention. In fact, keeping the arm in a dependent position can promote fluid accumulation, while regular exercise, tailored as per the healthcare provider's recommendations, is important for maintaining lymphatic function and overall arm mobility.