Toxicity - Cns O2

When they broke the surface, the noise of the world rushed back in—the boat engine, the wind, the shouted orders from the deck.

| Step | Action | |------|--------| | 1 | – Reduce PO₂ immediately (switch to air/ lower O₂ %). | | 2 | Ensure airway safety – Remove regulator only if seizure stops; do not force objects in mouth. | | 3 | Prevent ascent/descent trauma – If submerged, protect from drowning and barotrauma. | | 4 | Monitor post-ictal – Do not re-start O₂ until fully recovered and PO₂ reduced. | | 5 | Treat complications – Aspiration, hypoxemia, acidosis as needed. | cns o2 toxicity

This differs from pulmonary oxygen toxicity (Lorrain Smith effect), which occurs with longer, lower-dose exposure. When they broke the surface, the noise of

The most terrifying part wasn't the shaking. It was the clarity. In the brief seconds before the blackout, Elias watched his HUD flash a brilliant, blinding red. PO2: 1.65. | | 3 | Prevent ascent/descent trauma –