The one thing to realize with excited delirium, and I mentioned this before, is that the adrenalin level is so high already that I'm not really sure that anything else we do can elevate it even more. I can't prove that; it's just a sense I have, but maybe I can add something.... Monsieur Ménard would like to get a better understanding of why, what's going on here. There is a theory--and I do wish to emphasize it's a theory--that in addition to the adrenalin levels being really high, there is a salt in the blood that we call potassium--if you've ever taken a salt substitute, that's potassium--and that level is really high. High adrenalin and high potassium can both cause the heart to beat abnormally, an arrhythmia, but when both of them are high, they protect against each other.
When you bring the person under control, when the person in excited delirium finally reaches that state of coming down, the person is exhausted and can do no more, the adrenalin stays high and the potassium suddenly drops. Now you have the two working together against the heart. That's why the most dangerous period with excited delirium, whether you've done chokeholds or taser or anything else, is within about three to five minutes of when the person has quieted down. That's when the heart stops.
When you look at the cases, if you have a chance to look at the timing, that's what you'll see. Everyone says it's when the person is brought under control, but I really think the only reason we get a person under control is that now the person has reached the stage of being completely done, with no more left. That seems to be the most dangerous time.
I'm not sure if that helps.