Convicted murderer Christa Pike survived two doses of pentobarbital during Tennessee's attempt to execute her, leaving medical experts examining how a lethal injection designed to stop breathing and the heart failed to kill her.
The 50-year-old death row inmate was taken to the hospital after the execution was halted on Wednesday night and was in critical condition, receiving life-saving care on Thursday, according to her lawyers. The Tennessee Department of Correction said it followed its established execution protocol, but officials have yet to determine exactly what went wrong.
Experts Examine Possible IV Infiltration
One possibility raised by Pike's lawyers and outside medical experts is that pentobarbital did not properly enter her bloodstream.
Medical experts who spoke to The New York Times said there were signs that the intravenous catheters may have allowed the drug to leak into tissue surrounding the insertion sites. The complication, known as IV infiltration, could have prevented enough pentobarbital from reaching Pike's bloodstream to cause respiratory and cardiac arrest.
Witnesses reported that Pike complained of severe discomfort in her arm during the execution attempt. At one point, she asked whether what she was feeling was normal and described a burning sensation. She remained alive after the initial and backup doses were administered.
However, authorities have not confirmed that IV infiltration caused the failed execution, and the precise reason remains under investigation.
Seven Needles Used To Find a Suitable Vein
Pike's lawyers said the execution team struggled to establish intravenous access before administering the pentobarbital.
Attorney Randy Spivey said he counted at least seven needles used on Pike's left arm, with one reportedly appearing bent when it was removed. Pike even attempted to help staff find a suitable vein, repeatedly suggesting they try higher on her shoulder.
Her legal team had previously warned that Pike had a lifelong blood disorder and a history of difficult vein access, which they argued could complicate lethal injection.
Her lawyers also reported blistering and discolouration around the IV sites following the procedure.
Could the Pentobarbital Have Failed?
Questions have also emerged about whether the pentobarbital itself could have contributed to the outcome.
Pentobarbital is a barbiturate that depresses the central nervous system. At sufficiently high doses, it can suppress brain activity controlling breathing, ultimately causing respiratory failure and cardiac arrest.
Tennessee's execution protocol uses pentobarbital as a single lethal injection drug. It provides for a primary set of syringes and a backup set if the inmate remains alive after the first dose. The protocol does not specify another procedure if the second dose also fails.
There is currently no confirmed evidence that the pentobarbital administered to Pike was improperly prepared, degraded or ineffective.
Christa Pike Execution Triggers Third-Party Review
Pike was sentenced to death for the 1995 torture and murder of 19-year-old Colleen Slemmer. She would have become the first woman executed in Tennessee in more than 200 years.
Instead, her survival has triggered an investigation into Tennessee's lethal injection procedure.
Governor Bill Lee described the outcome as 'deeply disturbing' and ordered a comprehensive third-party review. He also postponed Pike's execution and halted Tennessee's remaining execution scheduled for 2026 while investigators examine what happened.
The review is expected to scrutinise the execution process, including Pike's difficult vein access, the placement of the IV lines and how the pentobarbital was administered.
