Unlikely: Dying during a colonoscopy or because of one is a very rare event. The risk of a perforation or hole during a colonoscopy is about 1/1500. The risks of dying would increase if one had a perforation that was not noticed. Also there is a risk of having complications from the sedation. One could stop breathing from over sedation which could lead to death, again, a rare event.
Answered 5/9/2018
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