When should a CISD be performed after a major incident?

When should a CISD be performed after a major incident?

• A. Within 12-24 hours
• B. Within 12-72 hours
• C. Within 1 week
• D. Only after all investigations are complete

Answer: (B)

The timing idea here is to address how responders process emotions while the event is still fresh but not overwhelming. A Critical Incident Stress Debriefing is most effective when held within a window after the incident that allows for useful discussion and early support. The recommended span is within 12 to 72 hours. This window helps normalize reactions and provide coping strategies before distress becomes more entrenched, while still letting people engage with the discussion with some emotional distance from the adrenaline and shock of the moment.

Conducting a debrief too soon—on scene or within the first several hours—can be less productive because individuals may still be overwhelmed and not able to participate in structured processing. Waiting too long, such as several days into the week, reduces the opportunity to address reactions promptly and may allow acute stress to solidify into longer-term issues. Early identification of those needing additional support is also facilitated within this window.

So, the best choice reflects timing that supports constructive processing and early intervention: within 12 to 72 hours after the major incident.