What should one avoid when a patient is undergoing intracavitary or interstitial treatment?

It is important to avoid standing too close to the patient during intracavitary or interstitial treatments due to the potential exposure to radiation. These procedures often involve placing a radioactive source inside or near the tumor, which results in localized radiation exposure. Standing at a safe distance minimizes the risk of unintended radiation exposure to healthcare providers.

Maintaining distance is a fundamental principle in radiation safety known as the inverse square law, which states that the intensity of radiation decreases with the square of the distance from the source. Therefore, keeping a safe distance helps protect staff while still enabling them to monitor and assist the patient adequately.

In contrast, wearing a lead apron, using shielding equipment, and communicating with the patient are integral to the treatment process. Lead aprons provide additional protection for staff, while shielding equipment is designed to further minimize radiation exposure. Speaking to the patient can help alleviate anxiety and ensure the patient is comfortable during the procedure, which is an essential component of patient care.