What's the Preservative in the Solution? Ooh, a Seizure?

There was a paper and I think it was like maybe the early 80s. It was published from some, uh, the general electrical silence and not drop the blood pressure. So they started this study and the first like two or three patients that enrolled, they died. They got this terrible metabolic acidosis and just friggin died. What do you think happened? Ooh, allergic reaction. Not a terrible guess, but totally wrong. And then they go back through it and look at whatever the preservative was the second time. But yeah, so it wasn't a bad idea,. But I don't know if it accommodate chemically is just unstable without that preservative. The adrenal suppression