A high-profile execution attempt in Nashville ended in chaos and raised urgent medical questions after Tennessee death row inmate Christa Gail Pike survived two separate doses of lethal pentobarbital, the Associated Press reported.Pentobarbital is a short-acting barbiturate, according to medical authorities at the National Institutes of Health (NIH).Historically prescribed as a sedative, anti-seizure medication or sleep aid, pentobarbital enhances the activity of GABA, the brain's primary inhibitory neurotransmitter, slowing activity throughout the central nervous system.TENNESSEE DEATH ROW INMATE SURVIVES 2 LETHAL INJECTION DOSES IN FAILED EXECUTION ATTEMPTIn clinical medicine, pentobarbital has been used for several purposes, including the following.Christa Gail Pike is seen during her trial for the murder of Colleen A.Slemmer on March 18, 1996, in Knox County Criminal Court.
(USA TODAY Network via Reuters Connect)Because newer, safer drugs with lower risks of overdose have largely replaced barbiturates in hospital settings, pentobarbital is now rarely used in routine patient care.However, it remains a primary agent in veterinary euthanasia and lethal injection protocols across several U.S.states, according to the National Library of Medicine, FDA-approved veterinary drug labeling and the Death Penalty Information Center.In a high-dose lethal injection protocol, pentobarbital is administered intravenously in large, ultra-lethal quantities — typically 2.5 to 5 grams (far exceeding clinical therapeutic doses).JUDGE BLOCKS ALABAMA'S NITROGEN GAS EXECUTION METHOD, RULES IT IS UNCONSTITUTIONALLY CRUELWhen injected directly into a vein, the progression follows three stages, according to medical sources.Pike, 50, who was convicted in the 1995 murder of classmate Colleen Slemmer, was slated to become the first woman executed in Tennessee in more than 200 years.Media witnesses and defense filings reported that Pike remained conscious and vocal, experienced breathing di...