When should you use BSI precautions?

Using Body Substance Isolation (BSI) precautions is essential whenever you are assisting an injured guest. These precautions are designed to protect both the rescuer and the patient from potential infection or disease transmission through body fluids. In situations where first aid or CPR is administered, there is a risk of exposure to blood or other bodily fluids. Therefore, using BSI precautions ensures that you are taking necessary steps to minimize this risk, such as wearing gloves and other protective equipment.

In contrast to specific situations like emergency evacuations or training sessions, which may not necessarily involve direct patient care, BSI precautions should always be part of the protocol when interacting with individuals who are injured or in distress. This includes scenarios beyond just performing CPR, covering any situation where bodily fluids might be present. Thus, the correct answer highlights the importance of continuous protective measures with guests requiring assistance.