Acoustic estimation of the impact of a single dive using a closed-type breathing apparatus on the ventilatory function of the human lungs

Diving negatively affects the human respiratory system, especially if an oxygen breathing apparatus is used. The spirometry indices generally used to estimate the ventilatory function of the lung have a poor sensitivity to the toxic effect of hyperbaric hyperoxia. The goal of this study was to estimate the possibilities of using the forced expiratory (FE) tracheal noise duration. The study was done on 48 divers who had been tested before and after a single dive.