The customer reported during the masterscreen body/diffusion testing.The demand valve leaks.The customer reported after inspiration the patient experienced (nausea) sickness, gag reflex, and "overblown" lung.The customer reported the shutter does not open adequately after exposure time and the patients exhales next to the mouthpiece.The customer reported being unable to carry out measurements and reported the most likely cause of the issue is the demand valve assembly.The customer reported the patient left the hospital without any further action (no surgery, no treatment).The customer reported there is no patient injury associated with the event.
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