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Lethal injection is inhumane, say researchers.

Prisoners killed by lethal injection may be conscious and may experience excruciating pain and burning sensations while they asphyxiate, according to a new report.

"The design of the lethal-drug scheme itself is flawed," say Leonidas Koniaris of the University of Miami and his colleagues in the April PLoS Medicine.

The researchers point to low postmortem blood concentrations of sedatives and several reports of prisoners who required a second round of injections.

No ethical board or oversight group has ever evaluated the three-drug cocktail used by the federal government and by most of the 37 states that execute prisoners, say the researchers.

The cocktail includes the barbiturate sodium thiopental, the paralytic pancuronium bromide, and potassium chloride to stop the heart. Oklahoma's state medical examiner concocted the mix in 1977 as a more humane alternative to electrocution.

But insufficient sodium thiopental might leave the prisoner aware as the other two drugs take effect, the researchers say, violating the United States Constitution's Eighth Amendment prohibiting cruel punishment.

The authors based their report on information from North Carolina and California. The two states that execute the most prisoners, Texas and Virginia, refused to participate in the research.

Since the reinstatement of capital punishment in 1976, 891 prisoners have been executed by lethal injection.--B.V.
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Publication:Science News
Date:May 12, 2007
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