My involvement is basically within the hospital, setting up cpap and bipaps on acute respiratory distress, post-anesthesia. I have a patent pending product that is used with masks and a website that discusses the advantages, features, and testimonials of patients that have trialed this on different masks. In our hospital, the use of non-invasive ventilation is used based on protocols and criteria from the physician. Many times the physicians ask the therapists what to do with settings, humidification, type of mask, cpap versus bipap. The equipment used in hospital care is both advantageous and disadvantageous. You will normally find disposable masks, and very high tech cpap, or bipap units delivering flow, pressure and back-up rates. Of course, there are always small glitches and troubleshooting skills that develop over time. You learn and remember from every patient you set up : how to improve therapy for maximum results and to get the patient comfortable.