When measuring blood pressure in a patient with a left-sided mastectomy, what should be avoided?

In the context of measuring blood pressure in a patient who has undergone a left-sided mastectomy, it is important to avoid using the arm on the side where the mastectomy was performed. This is due to the potential risk of complications such as lymphedema, which can occur after lymph nodes have been removed during the surgery. Using the arm on the side of the mastectomy may exacerbate swelling or lead to discomfort since the lymphatic system may be compromised on that side.

When measuring blood pressure, it is standard practice to utilize the opposite arm— in this case, the right arm— to ensure accurate readings while also prioritizing the patient's safety and well-being. Avoiding this precaution could undermine the integrity of the measurement and increase risks to the patient.

While the other options focus on other aspects of technically measuring blood pressure, they do not specifically address the unique considerations necessary for a patient with a history of mastectomy. This highlights the importance of individualizing patient care according to their medical history and surgical interventions.