Changes

In this example, you can see the shape of the pressure delivered by the Resmed ASV. Compare it to the square-wave which is what Philips gives, even with Flex at 3. Look how normal the resulting respiratory flow rate is. Midway through this graph is an obstructive UA event (we know it's obstructive because the Resmed doesn't miss a central). Note how quickly pressure hits the top of the PS setting when a breath is missed. It doesn't step up over 4-breaths, it comes in right away and backs off as soon as respiration is spontaneous. The Philips lags in both directions. As a result, the Resmed does not very often miss its minute vent target.

====Tidal Volume====