My dad was diagnosed 3 years ago,and use to use 2 POC's bidged together. Hospice changed him over to 4 liquid containers bridged into a nasal cannula. They are having difficulty finding a humidifier that can handle the HIGH flow. All units are on MAX... his nasal passages and throat are really hurting/bleeding... so painful to watch. Does anyone know of anyone on that high a concentration?? Help?