Upon arriving at a factory where a patient was exposed to a toxic powder, what is the first action an EMT should take?

The first action an EMT should take upon arriving at a scene involving exposure to a toxic substance is to ensure that they are properly protected with gloves and protective gear. This is crucial because toxic substances can pose severe health risks to first responders. Proper personal protective equipment (PPE) helps prevent contamination and exposure, ensuring the safety of the EMT while they evaluate and care for the patient and consider additional interventions.

Without appropriate protective gear, the EMT not only risks their own health but may also compromise their ability to provide effective care. The necessity of PPE cannot be understated in toxicologic emergencies, where exposure can occur through inhalation, skin contact, or ingestion.

Other options, while they might seem reasonable in certain contexts, do not prioritize the EMT's safety first. For instance, entering the scene without protective gear (even if the situation appears relatively safe) could lead to unintended exposures. Similarly, waiting for buildings to be evacuated or wrapping the patient in plastic may be necessary steps but should follow after ensuring personal safety through proper equipment.