During what phase of an emergency response does scene assessment begin?

Scene assessment begins upon arrival at the scene because it is crucial to evaluate the environment in which you will be operating. This phase involves checking for hazards, ensuring the safety of all responders and bystanders, identifying the nature of the emergency, and assessing the number of casualties present. A thorough scene assessment allows responders to determine the appropriate actions to take, which can significantly affect the outcome of the situation.

Beginning the assessment at this stage ensures that responders can engage effectively and safely with the emergency. It is impossible to accurately evaluate the scene before arriving, as the specifics of the emergency are often not fully known until visually assessed. This assessment also sets the groundwork for any subsequent patient care and total management of the incident.