Eight current machines were tested, AirSense 10 Autoset Standard and Response (ResMed), Dreamstar (Sefam), Icon (Fisher & Paykel), Resmart (BMC), Somnobalance (Weinmann), System One (Respironics) and XT-Auto (Apex). The differences in how the machines respond to obstructive apnea is pretty amazing. We have known for some time that the Resmed Airsense 10 responds fastest to OA, and this is confirmed in this study. The other reasonably fast responders were the F&P Icon and Somnobalance. In order of finish, Respironics, Resmart, Apex and Dreamstar failed to respond fast enough or strongly enough to normalize breathing when set to their minimum starting pressure of 4.0.
This reflects much of our advise in the forum to aggressively increase minimum pressure, particularly with the slower responding machines like Respironics. You can visulaize the pressure response of the machines in the figure below from the article (In order of best to worst finish):
A1 = Resmed Airsense 10 Autoset (purple)
A2 = Resmed Airsense 10 Autoset in Response Setting?? (Dark Blue)
C= F&P Icon (Yellow)
E = Sonomnobalance (Dark Grey)
F = PRS1 Remstar (Green)
D = Resmart (Light Blue)
G = Apex XT-Auto (Light Blue)
B = Dreamstar (Red)
Table 1 in the article has the best summary of quantitative results from the two test runs, but I'm not sure how to reproduce it here.