May not be the same thing, but afterdrop is an issue with rescued drowning victims which can lead to Circum-Rescue Collapse which can lead to cardiac arrest.

https://en.wikipedia.org/wiki/Afterdrop

I'm not sure if there is consensus on this but the adivce I was given for rescue scenarios is to keep the patient tense. Raising voice at them, increasing stress, telling them they are still in danger and need to keep fighting.