The position of the water blow-off or safety valve in C.P.A.P.-systems.
After investigating aspects of a single nasal cannula system we conclude that the pressure read-out point should be located as close to the application point as possible; furthermore the water blow-off or safety valve should be positioned before (or at) the pressure application point.
D011175:Positive-Pressure Respiration / Q000295:instrumentation* / Q000379:methods; D012449:Safety