Use your head...

Could 'excited delirium' be cause of [taser-associated] deaths? [LINK]

There have been hundreds of people that have died just AFTER being tasered. Often within seconds, sometimes the symptoms begin within minutes as the disturbed heart rhythm falters (Google the keywords taser + asystole or bradycardia).

So how many people have died of 'excited delirium' just BEFORE being tasered? Logically you'd expect to have an approximately equal number of reports from the police that they were just about to taser someone, when the subject suddenly dropped dead in front of them (just before the taser was used). I've not seen any such reports, but there should be hundreds.

Conclusion? Cause-and-effect follows in the correct temporal order.