Which of the following is NOT one of the nine phases of an ambulance call?

• A. Preparation
• B. Inventory
• C. En Route
• D. Postrun

Answer: (D)

Understanding how an ambulance call unfolds helps explain why certain terms fit as phases and others do not. The phases describe the active cycle from getting ready to complete execution of the call, including pre-trip readiness, mobilization, travel, scene operations, patient care, transport, and post-call administration. Postrun, while it denotes what happens after the call, isn’t part of the call’s operational sequence itself. It refers to post-incident tasks rather than a stage you go through during the run.

Preparation fits because it covers getting the crew and vehicle ready before leaving, ensuring readiness. Inventory belongs in that pre-departure setup, as it’s about confirming that supplies and equipment are on hand and functional. En Route is the travel phase, where you’re moving from base to the scene or destination and readying for the events to come.

So, the option that describes Postrun isn’t part of the nine-phase call flow; it represents post-incident wrap-up rather than a step within the active ambulance call cycle.