What Researchers Did
Researchers tested four different mechanical ventilators to see how well they worked inside a hyperbaric chamber at depths up to 165 feet of sea water.
What They Found
Out of the four ventilators tested – the pneumatic Emerson, IMV bird, Urgency bird, and Modified Mark 2 bird – only the Emerson model functioned correctly. The other three ventilators failed to operate properly under hyperbaric conditions, leading researchers to recommend only the Emerson for chamber use at that time.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
This study is limited by its age (1978) and the small number of ventilator models evaluated.