Cerebral gas embolism absorption during hyperbaric therapy: theory.

摘要: Cerebral gas embolism is a serious consequence of diving. It associated with decompression sickness and assumed to cause severe neurological dysfunction. A mathematical model previously developed calculate absorption time based on in vivo bubble geometry used which various conditions hyperbaric therapy are considered. Effects varying external pressure inert concentrations the breathing mixtures, according US Navy Royal diving treatment tables, predicted. Recompression alone calculated reduce times 50-nl by up 98% over untreated case. Lowering inhaled concentration from 67.5% 50% reduces 37% at given pressure. Bubbles formed after He absorb 73% faster than bubbles created air, regardless recompression breathed. This useful alternative impractical clinical trials assessing initial step most effective eliminating cerebral embolisms should they occur.