Helium^during inspiration:VFr/PPres:Pt:Airway adaptor:Qn
helium^during inspiration:vfr/ppres:pt:airway adaptor:qn
Helium^during inspiration:VFr/PPres:Pt:Airway adaptor:Qn
helium^during inspiration:vfr/ppres:pt:airway adaptor:qn