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This study evaluates the effect of atmospheric pressure on tidal volume delivery in mechanical ventilation during hyperbaric therapy.

Tidal Volume Correction of Mechanical Ventilation Device for Use in Hyperbaric Therapy Settings

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This study evaluates the effect of atmospheric pressure on tidal volume delivery in mechanical ventilation during hyperbaric therapy.
Evaluated the Zoll 731 Series Z-Vent in a clinical hyperbaric therapy setting.
Measured tidal volume and breathing frequency across multiple ATA conditions using a pneumotachometer.
Applied a correction formula derived from simple linear regression to adjust tidal volume output.
Ventilator showed a strong linear correlation between output and measured tidal volume across conditions (R > 0.9, P < 0.01).
Output tidal volume variations ranged from 1.0 mL to 4.8 mL depending on pressure conditions.
After correction, the mean difference between desired and measured tidal volume was ± 2.1 mL.

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Study evaluates tidal volume corrections in mechanical ventilation for hyperbaric therapy, suggesting improved delivery in chambers.

Clark et al. (2024) studied this question.

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