The recordings, first obtained by the Associated Press, were released by the Nashville Department of Emergency Communications (DEC) and show confusion between prison staff, police, highway patrol and dispatchers in the aftermath of the botched execution on 30 September.
In the first call, released only as a written transcript, a caller told a dispatcher: "We've been carrying out an execution tonight. We've administered 10 grams of pentobarbital. The person is not yet deceased. That started approximately 1 hour ago. And we're calling for an ambulance."
The dispatcher asked the caller for a verification code, which the caller did not have.
In another recording, a dispatcher can be heard saying: "We are trying to find out if that is an actual thing that is happening and we need to send an ambulance and, or if you need police assistance or if this is someone that is just basically prank calling or, like, swatting us."
A separate recording captures Kelly Gleason, Pike's defence attorney, saying: "She is still alive and breathing and needs immediate life-saving care."
Pike, 50, was sentenced to death for the murder of Colleen Slemmer with her then-boyfriend in 1995. She survived two injections of pentobarbital and was taken to hospital in a critical condition.