Some of the three drugs used in a botched Oklahoma execution this week didn't enter the inmate's system because the vein they were injected into collapsed, and that failure wasn't noticed for 21 minutes, the state's prison chief said, urging changes to the state's execution procedure.
Medical officials tried for nearly an hour to find a vein in Clayton Lockett's arms, legs and neck before finally inserting an IV into his groin, prisons director Robert Patton wrote in a letter to the governor Thursday detailing Lockett's last day.
By the time a doctor lifted a sheet covering the inmate and noticed the line had become dislodged from the vein, all of the execution drugs had already been administered and there wasn't another suitable vein, the report noted.
"The drugs had either absorbed into tissue, leaked out or both," Patton wrote. "The director asked the following question: 'Have enough drugs been administered to cause death?' The doctor responded, 'No.'"
At that time, Patton halted the Tuesday night execution, but Lockett was pronounced dead of a heart attack 10 minutes later.
Oklahoma's execution rules call for medical personnel to immediately give emergency aid if a stay is granted while the lethal drugs are being administered, but it's not clear if that happened. The report does not say what occurred from when Patton called off the execution at 6:56 p.m. to Lockett being pronounced dead at 7:06 p.m.
The report also indicated that on his last morning, Lockett fought with guards who attempted to remove him from his cell and that they shocked him with a stun gun. After he was taken to a prison infirmary, a self-inflicted cut was found on Lockett's arm that was determined not to require stitches. The report also notes that Lockett refused food at breakfast and lunch.
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Inserting IVs into the groin area — the upper thigh or pelvic region — is often done for trauma patients and in experienced hands can be straightforward, but injecting in the femoral vein can be tricky because it's not as visible as arm veins and lies next to the femoral artery, said Dr. Jonathan Weisbuch, a physician in Phoenix.