nitrogen hypoxia | KGOU
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nitrogen hypoxia

A tank filled with liquid nitrogen is seen outside of an Oklahoma City business that sells nitrogen for various commercial uses.
Whitney Bryen / Oklahoma Watch

The condemned man enters the room where he will draw his last breath.

He will be restrained in some way, perhaps strapped to the T-shaped platform where other offenders have been executed by injection.

State Sen. Ervin Yen supports nitrogen hypoxia as an execution method.
Quinton Chandler / StateImpact Oklahoma

Oklahoma wants to go where no state has gone before: Executing death row inmates with nitrogen gas. Officials say nitrogen will bring quick, painless deaths, but the research is slim — and it has never been used in U.S. executions.

Oklahoma Department of Corrections

The colorless, odorless gas makes up 78 percent of our air.

Yet it is used in some assisted suicides in Europe. It is touted by some advocates for industry euthanasia of animals. And the gas – nitrogen – is what U.S. Air Force pilots are exposed to during high-altitude tests that gauge their reaction to reduced oxygen and can render them unconscious.

Now Oklahoma plans to use nitrogen in its death-penalty chamber.