Christa Pike survived her execution. What happened?

Christa Pike remained alive after receiving two doses of pentobarbital during a failed execution attempt. Witnesses reported that she was snoring while officials assessed the situation.
But after being injected with two ostensibly lethal doses of pentobarbital, Pike was still alive, snoring loudly as journalists selected to witness the execution glanced at one another, wondering what was happening.
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Christa Pike remains alive following a failed lethal injection execution attempt in Tennessee.