The delayed casualty is one recovering from mild effects or from successful therapy. Generally, it will be hours before full recovery. Evacuation is not necessary, but might be considered until full recovery takes place. An expectant casualty is apneic with circulatory failure. Generally, a casualty who has had inhalation exposure and survives long enough to reach medical care will need little care.
Full recovery is usually relatively fast after cyanide intoxication.
Those with mild to moderate effects from the agent can usually return to duty within hours, and those successfully treated after severe effects can return within a day.