DSW Undersea Rescue Practice Test 2026 – Full Exam Prep Guide

The maximum CO2 level that should not be exceeded inside a hyperbaric chamber is 1.5% SEV (Standard Exposure Value). This level is set to ensure the safety and well-being of individuals undergoing hyperbaric treatments. Elevated carbon dioxide levels can lead to symptoms such as headache, confusion, dizziness, and other health complications, which can be particularly problematic in a confined environment like a hyperbaric chamber.

By maintaining a CO2 level at or below 1.5%, the chamber operators can reduce the risk of hypercapnia, a condition resulting from excessive CO2 in the bloodstream, which can have serious medical implications. This threshold is important for ensuring that patients receive effective treatment without the adverse effects associated with high levels of carbon dioxide, maintaining a safe atmosphere for both patients and operators during the procedure.