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The highest cross-infection risk comes from shared oxygen delivery devices. Disinfecting hoods/masks between uses is the most effective preventive measure. Cotton gowns reduce fire risk but not infection.

According to Henry’s Law, more nitrogen dissolves in tissues at higher pressures. Rapid decompression causes nitrogen bubbles to form, leading to decompression sickness. This is the fundamental rationale for controlled decompression and HBO therapy.

Oxygen masks/hoods reduce consumption, minimize fire risk, and allow chambers to be pressurized with compressed air instead of pure oxygen. This improves safety and efficiency.

Oxygen-enriched environments (>23.5% O₂ per NFPA 99 standards) greatly increase fire risk. Materials that normally resist ignition may burn violently in oxygen-rich chambers. CHTs must monitor oxygen concentration continuously and follow strict safety policies to prevent catastrophic chamber fires.

Chest imaging confirms or rules out pneumothorax, which is an absolute contraindication unless treated with a chest tube. Spirometry, TCOM, and EKG do not diagnose pneumothorax directly.