Oxygen in excess is toxic. The implications of this science-fact has been mostly forgotten by Medicine, but is commonly known by SCUBA divers (whose enemy is Nitrogen).

Just watched my mom's 98 year old friend get finished off with nasal oxygen (~week ago). Once she'd been on it for a day couldn't go without it. If the goal was to extend her life, they would have incorporated the antidote to oxygen toxicity.

I call it #MedicalHyperventilation [0], but afaik my term hasn't taken off.

[0] https://www.taxiwars.org/2021/06/folly-medical-hyperventilat...