“…In addition, the expense of the CPAP mask is not included in the charge, nor is the cost of provision of multiple masks for those patients who cannot tolerate the initial masks provided by the hospital. In a previous study looking at the use of CPAP for inpatients, 10% of those studied did not use the CPAP provided by the hospital, and the most common reason for this was intolerance . At this institution, the hospital‐provided mask is a full face mask, and intolerance for the full face mask has been attributed not only to its being bulky headgear and causing claustrophobia, but also due to the effects of transmural pressure .…”